certifications - bearing-supplies.co.uk belts.pdfincrease in contact force between belt and pulleys...
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Certifications
• Products exported to over 70 countries globally• Distribution network in 45 countries
Global Presence
PIX EUROPE LIMITEDIpswich U.K.
PIX SOUTH AMERICA LTD.Sao Paulo, Brasil
PIX FLEXEQUIP HYDRAULICSLisburn, Nothern Ireland
PIX GERMANY GmbHBorchen, Germany
PIX FLEXEQUIP HYDRAULICSSouth Glamorgan, Wales
• Algeria • Argentina • Australia • Austria • Belarus • Belgium • Bolivia • Brasil • Canada • Capetown • Chile • China • Colombia • Czech Republic • Denmark • Egypt • El Salvador • Estonia • Fiji • Finland • France • Germany • Greece • Hongkong • Hungary • Ireland • Israel • Italy • Jordan • Kazakastan • Kenya • Korea • Kuwait • Lebanon
PIX HYDRAULICS & TRANSMISSIONS (Hangzhou) LTD.Hangzhou, ChinaPIX MIDDLE EAST FZC
Ras-Al-Khaimah, UAE
PIX TRANSMISSIONS LIMITEDNagpur, India
& BELTS HOSES
SOUTHAMERICA
H Y D R A U L I C S
• Malaysia • Mauritius • Mexico • Netherlands • New Zealand • Norway • Peru • Poland • Portugal • Romania • Russia • Saudi Arabia • Singapore • Slovakia • Slovenia • South Africa • Spain • Sri Lanka • Sudan • Sweden • Switzerland • Syria • Taipei • Taiwan • Tanzania • Thailand • Tunisia • Turkey • U.K. • U.A.E • Uganda • Ukraine • U.S.A. • Venezuela • Zambia
HYDRAULICS &TRANSMISSIONS(HANGZHOU) LTD
Special Application Belts
ARAMID CORD BELTS
®X’setPROFILE TOP BELT
®X’set PT-6PROFILE TOP BELT
®X’set PT-7PROFILE TOP BELT
®X’set PT-O
®X’set PT-HCPROFILE TOP BELT
®X’set PT-2TPPROFILE TOP BELT CUT EDGE COGGED BELT
®X’tra DOUBLE SIDED COGGED BELT
®X’tra DS
WRAP BANDED BELT
®X’set MB ®X’tra MBMOULDED COGGED BANDED BELT WRAP VARISPEED BELT
®X’set VS ®X’tra VSCOGGED VARISPEED BELT
ELASTICATED POLY BELT
®X’ceed ELEPDM POLY BELT
®X’ceed DOUBLE SIDED POLY BELT
®X’ceed DSSYNCHRONOUS BELT WITH
V-POLY PROFILE
®X’act
Contents
Wrapped BeltsClassical V-BeltsWedge V-BeltsNarrow V-Belts
Hexagonal Belts
Banded Belts
Raw Edge Belts
Raw Edge Moulded Cogged Belts
Raw Edge Classical Belts
Raw Edge Wedge Belts
Raw Edge Narrow Belts
Raw Edge Moulded Cogged Banded Belts
Raw Edge Plain Belts
Raw Edge Laminated Belts Standard Product RangeSpecial Construction Belts
High Power BeltsAOH V-beltsBelts with Aramid CordFRAS V-BeltsDry Cover V-BeltsProfile Top Belts
Fractional Horse Power Belts (FHP/M)
Light Duty single V-Belts
Double Cogged belts
Asymmetric belts
Variable Speed Belts
Wrap Vari Speed belts
Raw Edge Vari Speed belts
Automotive Belts
Drive Design V - BeltsDrive Design Example (Classical)Drive Design Example (Wedge)Drive Design Example (Raw Edge Moulded Cogged)Service FactorsBelt Section Selection ChartRecommended standard Pulley DiametersPower Rating ChartsArc of Contact Correction FactorPitch Length Correction Factors Installation and Take-up allowance
Idlers
V- Flat Drives
1-23456
7
8
9
9
9
10
1011
12121313131415151515
16
16 -18
18
19-20212223
24-2627-2829-63
6465-6667-6869-70
71
Page No.
V-Grooved PulleyService Equipments
Pulley gaugesLength Finder
Digital Tension Meter
Tension Tester
Drive Design Software
Maintenance & Storage
Trouble Shooting - (V-Belts)
Ribbed Belts
Cross Sectional View, Features
Standard Product Range
Drive Design - Ribbed BeltsDrive Design ExampleService factor selection
Section Selection Chart Pulley Groove Dimensions Pulley DiametersPower Rating & Correction FactorsInstallation & Maintenance IdlersTrouble Shooting - (Ribbed Belts)
Conversion Constants
Questionnaire
Notes
72
737374
74-7576-7778-79
80
81
82
83-84
85
85
8687-8889-96
979899
100101102
Contents Page No.
Power TransmissionThe transmission of power between belt and pulleys can either involve frictional forces or positive engagement and mechanical interlocking, for instance with the aid of cogs or teeth. The frictional forces, and thus the possible power rating, will depend on the coefficient of friction, the normal force and the contact area between belt and pulleys. The size of the contact area will depend on factors such as the arc of contact angle. Any increase in contact force between belt and pulleys will cause increased belt tension meaning increased loads on shafts and shaft bearings. One method of increasing frictional force without a corresponding increase of the belt tension is to utilize the wedge effect without locking the belt in the groove, as in a V-belt.
Construction:
Wear resistant bias cut Neoprene rubberised polyester cotton fabric.
High tenacity, low stretch, specially treated Polyester &Kevlar cord.
High tensile cord embedding cushion rubber compound.
Specially compounded high modulus compression rubber.
Wrap Construction Belts
1
Wrapped Classical Belts
The first of the V-belts to enter the power transmission scenario. The continued effort of the R&D of PIX has enabled to achieve the power ratings considerably higher than most of the available in the market. The compounds used to build up these belts are well chosen to match the stipulated power ratings thus offering distinct advantages regarding the increased factor of safety on critical drives.
The standards followed by PIX has put the tolerances to be much more stringent than BS 3790, which forms the basis of PIX classical belts.
PIX classical belts have a belt width to height ratio of approx 1.6:1. The recommended
belt linear speed is 30 m/sec maximum. The permissible flex rate is around f = 80 per
second.
• Antistatic
0 0• Temperature range: -18 C to +60 C • Maximum belt linear speed: 30 m/sec
• ATEX certified FRAS belts are available
Features:
• The top width to height ratio 1.6:1
• The permissible flex rate is around f = 80 per second
Th
h
Tw
Wp
2
Applications:
Primarily used as replacement on industrial drives. Special application is V flat drives where only classical belts are recommended.
In applications where reverse idlers have to be used, classical belts are advantageous than other belts, because of smaller heights.
Standards, Dimensions & Product Range:PIX manufactures the entire range of Classical V-belts. The nominal length designation
Note: Li - Inside Length, La - Outside Length, Lp - Pitch Length, Le - Effective Length
8
Z
A
B
20
C
25
D
E
8
10
13
17
20
22
25
32
38
5
6
8
11
13
14
16
19
23
40
40
40
40
40
40
40
40
40
6.7
8.5
11.0
14.0
17.0
19.0
21.0
27.0
32.0
1.3
2.0
2.75
3.5
4.0
4.8
6.0
8.1
8.5
DIN 2215
IS 2494,BS 3790,ISO 4184
IS 2494,BS 3790,ISO 4184
IS 2494,BS 3790,ISO 4184
DIN 2215
IS 2494,BS 3790,ISO 4184
DIN 2215
IS 2494,BS 3790, ISO 4184
IS 2494
40
50
71
112
160
180
250
355
500 ‘PIX’ FRAS belts conforms to : II 2GD c IIB X (Test report no. IB-03-4-934) - ATEX
35.0
9.5
13.0
16.0
35.5
31.0
57.0
44.5
90.0
172
195
360
658
375
658
655
662
658
Li
Li
Li
Li
Li
Li
Li
Li
Li
Dimension AnglePitchwidth
Twmm
Thmm
Deg
Top topitch
12
16
18
26
31
32
39
40
53
19
22
32
43
48
56
61
79
92
31
38
50
69
79
88
100
119
145
Belt Length Factor
Lp to Lamm
Li to Lpmm
Li to Lamm
StandardWpmm
hmm
RecommendedMin. Pulley
Diameter (mm)
Product RangeSection
Mininch
Maxinch
LengthDesignation
3
* If the belt speed exceeds 30 m/s then the pulleys must be dynamically balanced.
Dimension AnglePitchwidth
Twmm
Thmm
Deg
Top topitch Belt Length Factor
Lp to Lamm
Li to Lpmm
Li to Lamm
StandardWpmm
hmm
RecommendedMin. Pulley
Diameter (mm)
Product RangeSection
Minmm
Maxmm
LengthDesignation
•‘PIX’ FRAS belts conforms to : II 2GD c IIB X (Test report no. IB-03-4-934)
SPZ
SPA
SPB
19
SPC
10
13
17
19
22
8
10
14
15
18
40
40
40
40
40
8.5
11.0
14.0
16.0
19.0
2.00
2.75
3.50
4.00
4.80
13
18
28
25
30
37
45
60
69
83
50
63
88
94
113
BS 3790
BS 3790
BS 3790
DIN 7753
BS 3790
63
90
140
180
224
365
576
940
2261
1750
4953
9144
16764
9601
16789
Lp
Lp
Lp
Lp
Lp
Wrapped Wedge Belts:Wedge belts have been the result of continuous thrust by the manufacturers and users on higher power transmissions with reduction in space requirements. Wedge belts can transmit higher powers to extent of 1.5 to 2 times the classical belts with the same top width. This has been achieved by the dimensional changes, apart from better cord constructions used & the optimum placing of the cord line which provides the best support to the cord while in motion. For the efficient performance of wedge drive it is essential that the proper tension be maintained in the drive, failure to maintain the same will render the purpose of wedge belts ineffective.
•The top width to height ratio is 1.2:1•The maximum recommended belt speed is (30 m/s)*•The permissible flex rate is around f = 100 per second• Less deformation of the belt cross section when in contact
with the pulleys ensures better contact between the belt flanks & the pulley grooves.
Features:• Antistatic
0 0• Temperature range: -18 C to +60 C
• ATEX certified FRAS belts are available
Applications:Wedge belts are used primarily on all the new drives because of the space savings achieved by using these belts. Wedge belts find its extensive use in all industrial applications from light duty drives as those for pumps to heavily loaded stone crusher drives.
Standards, Dimensions & Product Range:PIX manufactures the entire range of wedge belts. The nominal length designation for wedge belts is the pitch length in mm.
Th
h
TwWp
Wrapped Narrow V-Belts:Constructionally & properties wise the narrow belts are similar to the wedge belts in performance, with the only difference being the additional top ridge provided in the narrow belts. Narrow belts are manufactured in accordance with RMA-IP 22 standards.
Acceptable agreement and exchangeability is found between 3V and SPZ as well as between 5V and SPB. Section 8V is however, larger than SPC. Profile SPC may in some cases be used in grooves intended for the 8V profile with some loss of power rating but the opposite is not recommended.
Maximum recommended belt speed is (30 m/s)*Maximum flexing rate is f=100 per second
• Also available in FRAS construction
Standards, Dimensions & Product Range:The standard length designation in narrow belts is as follows:Belt no./10 gives outside length in inches.
Ex.: 5V 950 means 950/10= 95 inches outside length.
Features:• Antistatic
0 0• Temperature range : -18 C to +60 C • •
Interchangeability between Narrow & Wedge belts
Narrow Wedge3V5V
SPZSPB
Th
h
Tw
Wp
4
* If the belt speed exceeds 30 m/s then the pulleys must be dynamically balanced.
Dimension Angle Pitchwidth
Twmm
Thmm
Deg
Belt Length Factor
Lp to Lamm
Li to Lpmm
Li to Lamm
StandardWpmm
RecommendedMin. Pulley
Diameter mm
Product RangeSection
Mininch
Maxinch
3V
5V
8V
9.7
16
25
8
14
23
40
40
40
8.9
15.2
25.4
13
25
53
37
60
92
50
85
145
RMA IP 22
RMA IP 22
RMA IP 22
63
140
335
19.5
48.0
90.0
190
654
654
La
La
La
LengthDesignation
Wrapped Hexagonal Belts:Hexagonal V-belts are also known as double V-belts, can be in simple terms be considered as two V-belts joined back to back. The neutral axis containing the tension member is exactly half way up the section.
Applications:Hexagonal belts finds its application in the drives where several pulleys in the same plane are to be driven in the clockwise and anti-clockwise direction simultaneously. The polyester tension cord placed at the centre of the construction provides the belt extreme flexibility and low stretch properties. It is because of this positioning of the cord the same is not subjected to any other forces as in the case of normal V-belts. Double V-belts normally finds its application in machines & rice mills. However of late these belts are rapidly finding its application in industrial drives.
Drive Calculation:Drive calculation for double V-belts differ from the drive calculations of two pulley drives. The effective lengths, rotational speeds, transmission ratios & belt speeds are determined by the effective pulley diameters. We suggest that the customer should get back to us for assistance in using these belts.
Features:• Antistatic
0 0• Temperature range : -18 C to +60 C • Maximum belt linear speed : 30 m/sec• Also available in FRAS construction Standards, Dimensions & Product Range:For all practical purposes the length of double V-belts is considered as the effective length which is roughly the belt length at the centre.
Th
Tw
5
Angle
Twmm
Thmm
Section Deg Standards
RecommendedMin. pulleydiameter
mm
AA
BB
CC
25
13
17
22
25
10
14
17
22
40
40
40
40
IS 11038, ISO 5289
IS 11038, ISO 5289
IS 11038, ISO 5289
RMA IP 21, IS 11038, ISO 5289
80
125
224
280
Mininch
Maxinch
43
40
73
89
260
660
658
681
Li
Li
Li
Le
Product Range
LengthDesignation
Dimension
Wrapped Banded BeltsPIX Banded belts are made up from Classical, Wedge or Narrow belts with strong tie band over them. Each band may contain the required number of belts. Maximum up to 5 belts in one tie band, depending upon the drive conditions, are recommended.
Features:• Antistatic
0 0• Temperature range : -18 C to +70 C
• Recommended number of ribs: 5• ATEX certified FRAS belts are available
Applications:PIX banded belts are recommended on drives under the conditions of -• Severe vibrations• Vertical shaft drives• V-flat drives• Agricultural drives• Conveyer systems• Crushers, Compressors, Generator sets, Pumps etc
≤
e
Tw
Th
Standards, Dimensions & Product Range:
6
Note:While using banded belts it is always recommended to use standard pulleys with proper guard only. The proper belt sitting can only be obtained if the pitch maintained for the belts & for pulleys are same. We recommend that the customer get back to us with details before using banded belts to enable us to provide the best suggestions. Improper design using banded belts can lead to rapid failure of the drive system.
Twmm
Thmm
SectionAngleDeg Standard
RecommendedMin. pulleydiameter
mm
HA
HB
HC
HD
HE
HZ
HSPZ
HSPA
HSPB
HSPC
H3V
H5V
H8V
13.0
17.0
22.0
32.0
38.0
10.0
10.0
13.0
17.0
22.0
9.7
15.8
25.4
40
40
40
40
40
40
40
40
40
40
40
40
40
ISO 5291
ISO 5291
ISO 5291
ISO 5291
PIX
PIX
BS 3790
BS 3790
BS 3790
BS 3790
ISO 5290
ISO 5290
ISO 5290
80 de
130 de
210 de
370 de
520 de
55 de
67 dp
100 dp
160 dp
224 dp
67 de
180 de
317 de
10.0
13.0
16.0
21.5
27.0
8.5
10.0
12.0
16.0
20.0
10.0
16.0
25.0
DimensionPitchmm
15.9
19.0
25.5
37.0
44.5
10.3
12.0
15.0
19.0
25.5
10.3
17.5
28.6
Min inch
Maxinch
Length Designation
33
41
46
90
90
45
1168mm
914mm
1778mm
2235mm
35.5
48
98
280
628
658
658
658
171
9042mm
5000mm
9144mm
16688mm
178
660
664
Li
Li
Li
Li
Li
Li
Lp
Lp
Lp
Lp
La
La
La
Raw Edge Belts:Raw Edge belts, as the name implies do not have textile wrapping on the outer surface. These are produced by cutting from sleeve and hence it is called as Cut Edge belts.
Advantages
The manufacturing methods also makes it simpler to produce belts with a cogged underside thereby reducing the bending resistance of the belts and allowing them to operate on pulleys with approximately 20% smaller diameters. The decreased bending resistance reduces mechanical losses during bending and leads to improved efficiency and reduced working temperature. Heat dissipation will further be increased by the larger area between the belt and the surrounding atmosphere and by the air turbulence around the cogs during operation.
7
Construction:
Special Fabric layer
Specially treated & stabilised polyester cordPolychloroprene cushion rubber compound.
Fibre filled Polychloroprene Base compound
Moulded coggs for better flexibility
Raw Edge Moulded Cogged Belts
There are three types of raw edge belts, namely,REC (Raw edge moulded cogged)REP (Raw edge plain)REL (Raw edge laminated)
Features:
Special top layer with fabricThe rigid layer on the top restricts top layer cracking and gives uniform tension on cord ends. Top fabric gives better support & protection from environment.
Tough Tensile Member For Greater StrengthSpecially treated stabilised polyester cord provides high tensile strength with minimum stretch which in turn gives V-belt superior resistance to fatigue & shock loads.
Oil & Heat ResistantPolychloroprene used throughout the belt provides the oil & heat resistance properties to the belt. It also helps the V-belt resist ozone, sunlight, weather & ageing.
8
Moulded CogsMoulded cogs allow the Raw edge cogged belts to operate even over smaller diameter pulley at high speeds. The cogs also help in reducing the bending stress apart from providing the higher surface area for proper heat dissipation.
Polychloprene Cushion Rubber CompoundEnsures the best possible bond between the base compound, the tension cord & rubber impregnated fabric top surface that provides long service without cord separation.
Fibre Filled Polychloroprene Base CompoundGives increased power transmission capability, superior transverse stiffness & high wear resistance.
Speed ratios up to 1:12 are possibleThis eliminates the need for multi stage drives.
Advantages:The advantages of Raw Edge Moulded Cogged Belts over Wrap Belts are of great importance in following cases-1. Drives with very small pulley diameters2. High ambient temperatures 3. High belt speeds4. High level of power transmission
Sections:The sections covered under this category are -ZX, AX, BX, CX, XPZ, XPA, XPB, XPC, 3VX, 5VX & 8VX which offer the best techno-economical solution for above conditions. PIX also manufactures entire range of Raw Edge Banded Belts to suit various applications.
Raw Edge Classical Belts:
Th
h
Tw
Wp
ZXAXBXCX
8.511.014.019.0
10131722
68
1114
2.002.753.504.80
16142632
22364356
38
50
69
88
40
63
90
140
36363636
Dimension Angle Pitchwidth
Twmm
Thmm
Deg
Top topitch Belt Length Factor
Lp to Lamm
Li to Lpmm
Li to Lamm
Wpmm
hmm
Product RangeSection
Mininch
Maxinch
23
22
21
21
200
200
200
200
Li
Li
Li
Li
LengthDesignation
Conforms to IS 2494, BS 3790, ISO 4184
RecommendedMin. Pulley
Diameter (mm)
9
3VX5VX8VX
8.915.225.4
9.716.025.4
81423
132553
376092
5085
145
RMA IP 22RMA IP 22RMA IP 22
Raw Edge Narrow V-Belts:
383838
56112254
Th
h
TwWp
Dimension Angle Pitchwidth
Twmm
Thmm
Deg
Belt Length Factor
Lp to Lamm
Li to Lpmm
Li to Lamm
StandardWpmm
RecommendedMin. Pulley
Diameter (mm)
Product RangeSection
Mininch
Maxinch
242498
202203200
LaLaLa
LengthDesignation
Raw Edge Moulded Cogged Banded Belts:
Section
HAXHBXHCXHXPZHXPAHXPBHXPCH3VXH5VXHAVX-10HAVX-13
AngleDeg
Dimensions
Twmm
Thmm
13.017.022.010.013.017.022.0
9.715.810.013.0
10.013.016.010.012.016.020.010.016.0
8.010.0
Pitch(mm)
15.919.025.512.015.019.025.510.317.512.616.0
3636363636363636363636
Conforms to ISO 5291, BS 3790, ISO 5290 & DIN 7753 Standards
LiLiLiLpLpLpLpLaLaLaLa
e
Tw
Th
Product Range
Min
23.5"23.5"23.5"
600 mm600 mm600 mm600 mm
23.5"23.5"
600 mm600 mm
Max
200"200"200"
5080 mm5080 mm5080 mm5080 mm
200"200"
5080 mm5080 mm
LengthDesignation
XPZXPAXPBXPC
8.511.014.019.0
10131722
8101418
2.002.753.504.80
13182830
37456083
506388
113
BS 3790BS 3790BS 3790BS 3790
Raw Edge Wedge Belts:
36363636
5671
112180
Th
h
Tw
Wp
Dimension Angle Pitchwidth
Twmm
Thmm
Deg
Top topitch
Belt Length Factor
Lp to Lamm
Li to Lpmm
Li to Lamm
StandardWpmm
hmm
RecommendedMin. Pulley
Diameter (mm)
Product RangeSection
Minmm
Maxmm
590590600600
5117512551405163
LpLpLpLp
LengthDesignation
10
Special Top fabric layer
Specially treated & stabilised polyester cordPolychloroprene cushion rubber compoundFibre filled polychloroprene base compound
Special bottom fabric layer
Raw Edge Plain Belts
Construction
Raw Edge Belts
The construction of REP belts is similar with REC belt except it has one special bottom fabric layer.
Standards, Dimensions & Product Range: Same as that of REC belts.
Raw Edge Laminated Belts
The Raw Edge Plain Belts (REP) may or may not have one layer of fabric at the bottom but Raw Edge Laminated Belts (REL) have more than one layer.
Due to that it has excellent resistance to transverse compression.
Standards, Dimensions & Product Range: Same as that of REC belts.
11
Standard Product RangePIX manufactures a wide range of V belts in various lengths as below. The sheet also depicts the iterations along with minimum and maximum lengths in range.
SectionRange
From ToInterval
LengthDesignation
Z
A
B
B
C
C
C
C
C
C
C
C
D
D
D
E
8
20
25
SPZ
SPZ
SPA
SPB
SPC
19
3V
5V
5V
8V
ZX
AX
BX
CX
XPZ
XPA
XPB
XPC
3VX
5VX
8VX
9.5"
13"
16"
19.5"
31"
35.5"
37"
45"
47"
51"
52"
68"
71"
90"
35"
35.5"
57"
365 mm
480 mm
575 mm
940 mm
1750 mm
2261 mm
19.5"
48"
49"
90"
23"
22"
21"
21"
590 mm
590 mm
600 mm
600 mm
24"
24"
98"
195"
360"
19”
658"
35"
37"
45"
47"
51"
52"
68"
658"
662"
658"
172"
375"
655"
370 mm
4950 mm
9145 mm
16765 mm
16790 mm
9601 mm
190"
49"
654"
654"
200"
200"
200"
200"
5115 mm
5125 mm
5140 mm
5160 mm
202"
203"
200"
0.5"
0.5"
1.0"
0.5"
2.0"
0.5"
1.0"
0.5"
1.0"
0.5"
1.0"
0.5"
---
---
0.5"
0.5"
0.5”
0.5”
0.5”
5 mm
5 mm
5 mm
5 mm
5 mm
5 mm
0.5"
1.0"
0.5"
0.5"
0.5"
0.5"
0.5"
0.5"
5 mm
5 mm
5 mm
5 mm
0.5"
0.5"
0.5"
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Lp
Lp
Lp
Lp
Lp
Lp
La
La
La
La
Li
Li
Li
Li
Lp
Lp
Lp
Lp
La
La
La
Note: Unlisted sections and sizes available on request
44.5”
59”
AOH V-BELTS (Oil & Heat Resistant)
Continuous contact with oil & grease has harmful effect on belt life. The heat resistant properties of regular construction belts allow drive operations in ambient temerature upto 60°C (Wrap belts). Ambient temperature above 60°C may lead to premature ageing of the belt. For both these conditions PIX AOH Belts are to be used.
Its special oil resistant cover protects the belt from contamination. Also these belts have been developed to work in ambient temperature upto 100°C. PIX AOH belts are also antistatic.
Range: Entire range
Special Construction Belts
In some critical applications, whenever torque is applied to the belts, they get deflected in the pulley groove.(See fig.1). Such deflection leads to an uneven distribution of load across the tension members.
Therefore, it is important for the compression rubber to be resistant to the lateral force, when entering into the pulley grooves. PIX's R&D has developed belts with the characteristics to withstand this lateral force in wrapped and raw edge constructions which are called as “PIX High Power Belts”.
These high power belts are designed in such a way that a composite layer with higher modulus across the belt section and with good flexibility along the belt circumference provides good support to High Modulus - Low Stretch (HMLS) tension member and thereby enhancing the power rating of the belt by 20% to 30% compared to the corresponding section of a standard V-Belt.
With the High Power Belts, the number of belts in a matched set of a multiple-belt-drive gets reduced and the belt life is also improved significantly. The HMLS tension member minimises the belt stretch, improving the machine-up time.
fig.1 Deflection of standard belt under load
On load
fig.2 Load distribution across tension member
EDGE CENTRE EDGE
CORD POSITION
EF
FE
CT
TO
RQ
UE
DIS
HIN
G
EF
FE
CT
CO
RD
TE
NS
ION
(ib
s)
12
HIGH POWER BELTS
Aramid is an organic polyaramide fibre that is manufactured using complex chemical processes. They are generally used where the power transmission requirements are very critical, apart from space restrictions on the installtion and take up allowances permissible. Aramid is used as tension member because of its high tensile strength.
Aramid construction belts are recommended where:
•There are restrictions on the drive width
•The installation & take up allowances are minimal •The drive is critical
The drive design calculation associated with this belt is similar to the standard drive design procedure . For further information kindly call on our Technical Services Department.
FRAS V-BELTS ( Fire Resistant & Anti-Static)
Certain working environments such as coal mines & sensitive petro chemical installations require V-belts having fire resistant properties in addition to normal anti-static properties.
PIX FRAS belts are suitable for such environments. This construction is thoroughly tested during & after manufacure, to comply with all aspects of IS-2494 Part - II & BS-3790. FRAS Belts are also certified by ATEX.Range: Entire range.
Confoms to: II 2GD c IIB X (Test report no. IB-03-4-934) - ATEX
Special Construction Belts
BELTS WITH ARAMID TENSION CORD
Cushion layerAramid Cord
Fibre filled basecompound
Cover fabric
Material Tensile Strength2lb/in
PolyesterAramid
162000400000
% Elongationat break
144
DC V-BELTS (Dry Cover)
It is suitable for drives having clutch applications like lawn movers, chemical industries where contamination is not acceptable. Basically manufactured in Blue colour. Can also be supplied in green, brown, red, black & white colours. Available in polyester as well as aramid constructions.
Range: All wrap construction belts.
13
Special Construction Belts
PROFILE TOP BELTS
In some of the applications it is desired that the belt used to transmit the power should also convey material like in ceramic industries, agricultural machineries, continuous processes, Steel plate cleaning system etc. In such cases, the V-belt needs to have a special construction depending on the type of material to be conveyed. PIX manufactures these type of belts to cater to such application.
B (17x22)
B (17x26)
B (17x21)
C (22x25)
SectionRange (inch)
Min Max
85
66
42
73
375
375
79
150
Height of Pattern (mm)
LengthDesignation
Dimensions (mm)
Top Width Thickness
17
17
17
22
22
26
21
25
11
15
10
11
Li
Li
Li
Li
37(37x25)
D (32x26)
SectionRange
Min Max
4064 mm
142 inch
8890 mm
633 inch
Height of Pattern (mm)
LengthDesignation
Dimensions (mm)
Top Width Thickness
37
32
25
26
7
7
Li
Li
3HSPB
SectionRange (mm)
Min Max
2134 mm 9144 mm
Height of Pattern
(mm)Length
Designation
Dimensions (mm)
Top Width Thickness
10 12 6 Lp
B (17x17)
C (22x20)
Note: Maximum height of PT - HC (Honey comb) pattern up to 12 mm provided on request
SectionRange (inch)
Min Max
32
38
658
658
Height of Pattern (mm)
LengthDesignation
Dimensions (mm)
Top Width Thickness
17
22
17
20
6
6
Li
Li
SectionRange
Min Max
85 inch
85 inch
48 inch
4064 mm
658 inch
658 inch
257 inch
16713 mm
Height of Pattern (mm)
LengthDesignation
Dimensions (mm)
Top Width Thickness
B (17x14)
B (17x16)
A (13x13)
37 x 25
17
17
13
37
14
16
13
25
3
5
5
5
Li
Li
Li
Lp
14
PT - 0
PT - HC (Honey Comb)
PT - 7
PT - 2TP
PT - 6
Food grain industries
Tile & general industries
Ceramic tile industries
Horticultural industries
Steel plate cleaning system
FRACTIONAL HORSE POWER BELTS (FHP/M)These belts are mainly used on Fractional Horse Power motors installed mainly in domestic appliances.
Series
Top width (mm)
Thickness (mm)
Angle (deg)
Range La (inches)
2000
10.0
6.0
40.0
11” - 173”
LIGHT DUTY SINGLE V-BELTThese belts are used for a smaller sized machineries installed in the household appliances. These belts are available in three different sections to meet the varying requirements. They are always used in single belt drives.
Series
Top width (mm)
Thickness (mm)
Angle (deg)
Range La (inches)
3L
10
6
40
10.5”-160”
4L
13
8
40
15”-360”
5L
17
10
40
21”-220”
DOUBLE COG BELTThis special construction allows the use of belt on small pulley diameters due to increased flexibility.Features:• Prevents buckling • Extremely Flexible• Can be used on smaller pulley• Better heat dissipation
ASYMMETRIC BELTS
Th
Tw
áâ
Top widthLength
DesignationThickness á â Length (mm)
Note: Unlisted sizes are available on request
Belts for special automotive applications.
15
19
16
19
19
19
10
9
10
8
10
18º
18º
18º
18º
18º
2º
2º
2º
2º
2º
1005
695
740
680
685
La
La
La
La
La
VARIABLE SPEED BELTS
Specially designed to withstand the high ambient temperature & oily conditions,
generally encountered in adjustable speed applications.
Cross Sections Nomenclature : 14 22 V 450 Metric System
14/16” Top Width0Groove Angle 22
14 22
Vari Speed
45” Pitch Length (Lp)
V 450
Cross Sections Nomenclature : 22 V 1150 A22 S.I. System
22 mm Top Width
Vari Speed
A2222
1150 mm Effective Length
0Groove Angle 22
V 1150
2. Raw Edge Variable Speed Belts
16
Wrap construction Variable speed belts: Standard: As per ISO 3410:1989
17x8
25x13
32x15
38x18
45x20
51x22
58x25
64x25
Section
Range (mm)
Min Max
800
1080
1171
1500
1524
1816
1930
1930
Li
Li
Lp
Lp
Lp
Lp
Lp
Lp
1262
9068
8179
9093
9525
9525
6604
6604
LengthDegsignation
Angle
40
30
34
30
30
34
30
30
Note: Other non standard sizes are also available. Please check with Technical Services Dept. for specific requirements.
Wrap construction variable speed belts: Non standards sizes
13x11
15x9
19x11
21x9
22x16
30x12
33x22
38x23
40x20
68x24
Section
Range (mm)
Min Max
1067
608
1100
940
1600
1002
3886
2362
878
2464
La
Lp
Lp
Lp
Li
Lp
La
La
Lp
Lp
2032
7061
8763
2286
7162
5385
16510
8192
6604
9144
LengthDegsignation
Angle
40
40
40
40
40
30
30
26
30
32
Apart from the above standard range, the product can be manufactured as per the range given. However, the details such as top width, thickness, angle or bottom width, length (Li/La/Lp, mm/inches) are required from the customer.
17
MANUFACTURING RANGE: Vari Speed Belts as per RMA IP 25/1991 (Dimensions in mm)
Cross Section
Top width(mm)(Nominal)
Thickness(mm)(Nominal)
Angle Deg
Pitch Length
Min Max
Belt Length Factor (mm)
Li to Lp Li to LaLp to La
22V - A22 / 1422V
30V - A22 / 1922V
37V - A22 / 2322V
30V - A26 / 1926V
46V - A26 / 2926V
51V - A26 / 3226V
40V - A30 / 2530V
51V - A30 / 3230V
70V - A30 / 4430V
64V - A36 / 4036V
70V - A36 / 4436V
76V - A36 / 4836V
22
22
22
26
26
26
30
30
30
36
36
36
5115
5125
5126
5126
5137
5137
5146
5147
5157
5157
5157
5161
22
30
37
30
46
51
40
51
70
64
70
76
8
10
11
11
13
13
15
16
18
18
18
19
700
700
700
700
700
700
700
700
700
700
700
700
15
20
23
23
27
27
30
33
37
37
37
39
35
42
46
46
55
55
65
67
77
77
77
81
50
62
69
69
82
82
95
100
114
114
114
120
MANUFACTURING RANGE: Vari Speed Belts as per ISO 3410 (E) / IS : 8777-1978
Cross Section
Top width(mm)(Nominal)
Thickness(mm)(Nominal)
Angle Deg
Pitch Length
Min Max
Belt Length Factor (mm)
Li to Lp Li to LaLp to La
HG
HH
HI
HJ
HK
HL
HM
HN
HO
5115
5125
5135
5145
5155
5165
5177
5185
5192
16.5
20.4
25.4
31.8
38.1
44.5
50.8
57.2
63.5
8.0
10.0
12.7
15.1
17.5
19.8
22.2
23.9
25.4
26
26
26
26
26
26
26
26
26
700
700
700
700
700
700
700
700
700
50
62
82
95
114
122
135
150
159
35
42
55
65
77
82
90
100
106
15
20
27
30
37
40
45
50
53
MANUFACTURING RANGE: Vari Speed Belts as per BS 3733 : 1974
HI
HJ
HK
HL
HM
25
32
38
45
51
13
15
18
20
22
30
30
30
30
30
5135
5145
5103
5167
5257
Cross Section
Top width(mm)(Nominal)
Thickness(mm)(Nominal)
Angle Deg
Pitch Length
Min Max
Belt Length Factor (mm)
Li to Lp Li to LaLp to La
700
700
700
700
700
27
30
37
40
45
55
65
77
82
90
82
95
114
122
135
Non Standard Vari Speed
5.00 mm (REC / REP)
8.00 mm (REC / REP)
9.00 mm (REC / REP)
10.00 mm (REC / REP)
11.00 mm (REC / REP)
12.00 mm (REC / REP)
13.00 mm (REC / REP)
14.00 mm (REC / REP)
15.00 mm (REC / REP)
16.00 mm (REC / REP)
17.00 mm (REC / REP)
18.00 mm (REC / REP)
19.00 mm (REC / REP)
20.00 mm (REC / REP)
21.00 mm TO 30.00 mm (REC)
20.00 mm TO 22.00 mm (REP)
23.5
24
24
24
24
24
27
27
27
27
35
35
35
35
63
63
86
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Li
Thickness LengthMinimum(inch)
Maximuminch
Automotive Belts – Wrapped Construction
Automotive Belts – Raw Edge Construction
18
PIX Automotive belts are specially designed to cater to the needs of automotiveindustries. These belts are suitable to drive various accessories in automobile such ascharging system, water pump, power steering pump, A/C compressors. The PIXautomotive belts are available in Wrap construction/ Cut Edge. Please refer page no. 82 for Ribbed automotive belts. The PIX Timing belts catalogue can be referred forsynchronous automotive belts.
SectionLength
DesignationTop width Thickness AngleLength (mm)
From To9.5 / AV 10
12.5 / AV 13 9.5
12.58.0
10.04040
375588
40649296
LaLa
SectionLength
DesignationTop width Thickness AngleLength (mm)
From ToX9.5 / AVX10
X12.5 / AVX13
X11A
X13A
X15A
X17A
X20A
10.0
13.0
11.5
13.5
17.0
18.5
21.5
8.0
10.0
8.0
9.0
10.5
11.0
12.5
36
36
36
36
38
36
36
600
600
610
600
600
600
610
5130
5143
5130
5136
5146
5149
5158
La
La
Le
Le
Le
Le
Le
DRIVE DESIGN PROCEDURE FOR V-BELTS
To obtain the best performance from V-Belts, it is necessary to design the drive correctly. The procedure for the same is as follows.
Calculate Belt Pitch Length (Lp) & Centre Distance (C)
Select Service Factor (K)
Service factor is obtained from Table 1 on page 23
Calculate Speed Ratio (S )R
Speed Ratio (S ) = R
r. p. m. of faster shaft (R)
r. p. m. of slower shaft (r)
STEP 1
STEP 2
Design Power (P ) = Power (P) x Service Factor (K)d
Calculate Design Power (P )dSTEP 3
Belt cross section is obtained from charts I, II & III on pages 24 to 26. When the point of intersection falls on or near the dividing line, feasibility of both cross sections should be checked.
Select Belt Cross SectionSTEP 4
Refer Tables 2 & 3 on pages 27 & 28 for selecting pulley pitch diameters. Try to avoid use of non standards pulleys but in some cases, it is necessary if the exact ratios are not covered by standard pulleys.
Select Pulley Pitch DiametersSTEP 5
Belt Pitch Length (Lp) = 2C + 1.57(D+d) + (D-d)4C
2
Where D & d are pitch diameters of larger & smaller pulleys respectively.
If the Belt Pitch Length comes in a fraction, use next whole / round-off length.
If there is a space constraint or centre distance limitation, use the same calculated length. If so, exact centre distance calculations are not required again.
STEP 6
Calculate the exact centre distance by the formula
C = A + A - B2
Where, A = - 0.3925 (D +d) and4L
B = (D - d)2
8
Refer power rating Tables from 4 to 26 on pages 29 to 63 for different belt sections.
Power rating per belt (P) = Rated power + Additional power for speed ratio
Determine Power Rating (P)STEP 7
Refer tables 27 & 28 on page 64 to 66 for arc of Contact Correction Factor & Belt Pitch Length Correction Factor respectively.
Find Arc of ContactCorrection Factor (Fc) &Pitch Length CorrectionFactors (Fd)
STEP 8
If the number of belts comes in a fraction, use next whole number.
Number of Belts (N) = Pd
P x Fc x Fd
Find Number of Belts (N)STEP 9
1) Smaller & larger pulley pitch diameters & number of grooves obtained.
2) Number of belts along with size & section obtained.
SummarySTEP 10
19
DRIVE DESIGN EXAMPLE (CLASSICAL)Condition 1: Prime mover A. C. motor; 75kW, 1450 r.p.m. (Driver)Condition 2: Reciprocating pump, 310 r.p.m., 18 hours per dayCondition 3: Approximate centre distance 1050 mm
STEPS FORMULAE CALCULATIONS
See above given condition 1 & 2
• Smaller pulley of 212 mm pitch dia. with 9 grooves of “C” section.
• Larger pulley of 990 mm pitch dia. with 9 grooves of “C” section.
• 9 belts of “C” section each of 4077 mm pitch length
1021 mm.•
S = R/r = 1450/310 = 4.67R
K = 1.4
Pd = 75 x 1.4 = 105 kW
Belt section indicated is “C”
d = 212 mm, D = 990 mm
Lp = 2(1050) +1.57 (990+212) +(990 - 212)
4 x 1050Lp = 4131.25 mm
Standard Lp = 4077 mm
C = A + A - B2
4077
4A = - 0.3925 (990 +212)
= 1019.25 - 471.78 A = 547.47
(990 - 212)
8B = = 75660.5
C = 547.47 + (547.47) - (75660.5)2
C = 1021 mm
P = 10.42 kW + 1.48 kW
P = 11.9 kW
Fc = 0.97
Fd = 1.01
N = 105
11.9 x 0.97 x 1.01= 9.00 (say 9 belts)
2
2
Speed Ratio (S ) = R/rRSTEP 1
Service factor (K) from Table 1 on page 23
STEP 2
Design power (Pd) = P x KSTEP 3
Belt cross section refer chart I on page 24
STEP 4
Pulley pitch diameters from Table 2 page 27
STEP 5
Belt pitch length (Lp) & Centre dist. (C)
C = A + A - B2
A = - 0.3925 (D +d) 4L
Lp = 2C + 1.57 (D + d) +(D - d)
2
4C
Choose the nearest standard Lp frompage 11.
B = (D - d)2
8
STEP 6
Power rating (P) = Rated power +Additional power for speed ratiofrom Table 9 on page 36
STEP 7
Arc of contact correction factor (Fc)from table 27 on page 64 &
from table 28 on page 65Pitch Length Correction Factors (Fd)
STEP 8
PdP x Fc x Fd
Number of belts (N) = STEP 9
STEP 10 Summary:
1. Smaller pulley fitted to prime mover
2. Larger pulley fitted to reciprocating pump
3. Classical belts required
4. Centre Distance
20
DRIVE DESIGN EXAMPLE (WEDGE)Condition1 : Normal torque A. C. electric motor 6 kW, 1440 rpm (Driver)Condition 2 : Centrifugal pump 720 r.p.m., continuous runningCondition 3 : Approximate centre distance 550 mm
Speed Ratio (S ) = R/rR See above given condition 1 & 2S = R/r = 1440/720 = 2R
STEP 1
Service factor (K) from Table 1 on page 23
K = 1.2STEP 2
P = 1.59 kW + 0.23 kW = 1.82 kW
Power rating (P) = Rated power +Additional power for speed ratiofrom Table 13 on page 43.
STEP 7
Design power (Pd) = P x K Pd = 6 x 1.2 = 7.2 kWSTEP 3
Belt cross section refer chart II on page 25
Belt section indicated is “SPZ”STEP 4
Pulley pitch diameters from Table 2 page 27
d = 80 mm, D = 160 mmSTEP 5
C = A + A - B2
A = - 0.3925 (D +d) 4L
B =
Lp = 2C + 1.57 (D + d) +(D - d)
2
4C
Belt pitch length (Lp) & Centre dist. (C)
Choose the nearest standard Lp frompage 11.
(D - d)2
8
Lp = 1480 mm
Standard Lp = 1480 mm
C = A + A - B2
1480
4A = - 0.3925 (160 +80)
= 370 - 94.2 A = 275.8
(160 - 80)
8B = = 800
C = + ( ) - (800)275.8 275.82
C = 550 mm
2
Lp = 2(550) +1.57 (160+80) +(160 - 80)
4 x 550
2
STEP 6
Fc = 1.00
Fd = 0.99
Arc of contact correction factor (Fc)from table 27 on page 64 &
from table 28 on page 65.Pitch Length Correction Factors (Fd)
STEP 8
N = 7.2
1.82 x 1.00 x 0.99= 3.99 (say 4 belts)
PdP x Fc x Fd
Number of belts (N) = STEP 9
STEPS FORMULAE CALCULATIONS
Summary:1. Smaller pulley fitted to electric motor shaft2. Larger pulley fitted to pump shaft
3. Wedge belts required.
4. Centre distance
STEP 10• Smaller pulley of 80 mm pitch dia. with 4 grooves of
“SPZ” section.
Larger pulley of 160 mm pitch dia. with 4 grooves of “SPZ” section.
4 belts of “SPZ” section each of 1480 mm pitch length.
550 mm.
•
•
•
21
DRIVE DESIGN EXAMPLE (CUT EDGE COGGED)Condition 1 : Prime mover A. C. motor; 75 kW, 1450 r.p.m. (Driver)Condition 2 : Reciprocating pump, 310 r.p.m., 18 hrs. per dayCondition 3 : Approximate centre distance 900 mm
STEPS FORMULAE CALCULATIONS
See above given condition 1 & 2S = R/r = 1450/310 = 4.67R
K = 1.4Service factor (K) from Table 1 on page 23
STEP 2
P = 7.17 kW + 1.03 kW
P = 8.2 kW
Power rating (P) = Rated power +Additional power for speed ratiofrom Table 25 on page nos. 60.
STEP 7
Pd = 75 x 1.4 = 105 kWDesign power (Pd) = P x KSTEP 3
Belt section indicated is “XPB”Belt cross section refer chart II on page 25
STEP 4
d = 125 mm, D = 584 mmPulley pitch diameters from Table 3, page 28
STEP 5
Lp = 2(900) +1.57 (584+125) +(584 - 125)
4 x 900Lp = 2972 mm
Standard Lp = 2975 mm
C = A + A - B2
2975
4A = - 0.3925 (584 +125)
= 743.75 - 278.28 A = 465.47
(584 - 125)
8B = = 26335.125
C = + ( ) - (26335.125)465.47 465.472
C = 902 mm
2
2Belt pitch length (Lp) & Centre dist. (C)
C = A + A - B2
A = - 0.3925 (D +d) 4L
B =
Lp = 2C + 1.57 (D + d) +(D - d)
2
4C
Choose the nearest standard Lp frompage 11.
(D - d)2
8
STEP 6
Fc = 0.98
Fd = 0.97
Arc of contact correction factor (Fc)from table 27 on page 64 &
from table 28 on page 66.Pitch Length Correction Factors (Fd)
STEP 8
N = 105
8.2 x 0.98 x 0.97= 13.47 (say 14 belts)
PdP x Fc x Fd
Number of belts (N) = STEP 9
Speed Ratio (S ) = R/rRSTEP 1
Summary:1. Smaller pulley fitted to prime mover
2. Larger pulley fitted to reciprocating pump3. Cut Edge Cogged belts required4. Centre distance
STEP 10• Smaller pulley of 125 mm pitch diameter with 14
grooves of “XPB” section.
• Larger pulley of 584 mm pitch diameter with 14 grooves of “XPB” section.
• 14 belts of “XPB” section each of 2975 mm pitch
902 mm.
length
•
22
23
For speed - Increasing Drives ofSpeed ratio 1.00 to 1.24 : Multiply service factor by 1.00Speed ratio 1.25 to 1.74 : Multiply service factor by 1.05Speed ratio 1.75 to 2.49 : Multiply service factor by 1.11Speed ratio 2.50 to 3.49 : Multiply service factor by 1.18Speed ratio 3.50 & over : Multiply service factor by 1.25
+ e.g. electric motors (a.c. start, delta start, d.c. shunt wound), internal combustion engines with four or more cylinders, all prime movers fitted with centrifugal clutches, dry or fluid couplings.
# e.g. Electric motors (a.c. direct -on - line start, d.c. series & compound wound), internal combustion
engines with less than four cylinders.
SPECIAL CONDITIONS1) For reversing drives, except where high torque is not present on starting, add 20% to the factors2) Idler pulley on slack side (internal), no addition to the factors.3) Idler pulley on tight side (internal), add 0.1 to the factors.
Note 1: The service factors in TABLE 1 do not apply to light duty drives using Z or Y section belts.
In such cases, PIX Technical Services department should be consulted.
Note 2: The use of an idler pulley on the outside of belt is not recommended.
TABLE 1:Service Factors for Belt Drives (See Note 1)
TYPE OF DRIVEN MACHINE SERVICE FACTOR
EXAMPLES
Class 1 : LIGHT DUTYAgitators (uniform density), BlowersExhausts & fans (up to 7.5 kw), Centrifugalcompressors & pumps, Belt conveyors(uniformly loaded)
SOFT START + HEAVY START #
Class 2 : MEDIUM DUTYAgitators & mixers (variable density), Blowers,Exhausts & fans (over 7.5 kw), Rotary compressors & pumps (other than centrifugal), Belt conveyors (not uniformly loaded), Generators & excitors, laundry machinery, line shafts, machine tools, printing machinery, saw mill & wood working machinery, screens (rotary).
Class 3 : HEAVY DUTYBrick machinery, bucket elevators,compressors & pumps (reciprocating),conveyors (heavy duty), hoists, mills (hammer),pulverisers, punches, presses, shears, quarry plant, rubber machinery, screens (vibrating), textile machinery.
Class 4 : EXTRA HEAVY DUTYCrushers (gyratory jaw - roll) Mills (ball - rod - tube)
10 & Under
Over 10to 16
Over16
10 & Under
Over 10to 16
Over16
1.0
1.1
1.2
1.3
1.1
1.2
1.3
1.4
1.2
1.3
1.4
1.5
1.1
1.2
1.4
1.5
1.3
1.4
1.6
1.8
1.2
1.3
1.5
1.6
WORKING HOURS
24
A/A
XB
/BX
C/C
XD
E
12
34
51
02
03
04
05
01
00
20
03
00
500
30
070
00
.75
DE
SIG
N P
OW
ER
(k
W)
No
te: Z
se
ctio
n b
elts
sh
ou
ld b
e u
sed
fo
r lo
w p
ow
er, s
ma
ll p
ulle
y d
iam
ete
r a
pp
lica
tion
s a
nd
sh
ou
ld b
e s
ele
cte
d o
nly
wh
en
pu
lley
dia
me
ters
are
sm
alle
r th
an
th
e r
eco
mm
en
de
d m
inim
um
fo
r A
se
ctio
n b
elts
.
CH
AR
T I :
SE
LE
CT
ION
OF
V-B
ELT
S C
RO
SS
SE
CT
ION
10
0
20
0
30
0
40
0
50
0
10
00
12
00
15
00
20
00
30
00
40
00
50
00
SPEED OF FASTER SHAFT (rpm)
25
CH
AR
T II :
SE
LE
CT
ION
OF
V-B
ELT
S C
RO
SS
SE
CT
ION
12
34
51
02
03
04
05
01
00
20
03
00
30
00
.75
DE
SIG
N P
OW
ER
(k
W)
40
0
10
0
20
0
30
0
40
0
50
0
10
00
12
00
15
00
20
00
30
00
40
00
50
00
SPEED OF FASTER SHAFT (rpm)
SP
Z / X
PZ
SP
A / X
PA
SP
B / X
PB
SP
C / X
PC
26
CH
AR
T III :
SE
LE
CT
ION
OF
V-B
ELT
S C
RO
SS
SE
CT
ION
12
34
51
02
03
04
05
01
00
20
03
00
30
00
.75
DE
SIG
N P
OW
ER
(k
W)
40
0
10
0
20
0
30
0
40
0
50
0
10
00
12
00
15
00
20
00
30
00
40
00
50
00
SPEED OF FASTER SHAFT (rpm)
3V
/ 3
VX
5V
/ 5
VX
8V
/ 8
VX
TABLE 2: Standard Pulley Pitch Diameters for Faster Shaft
8 Z A B 20 C 25 D E SPZ/3V SPA SPB/5V 19 SPC 8V
40
45
50
56
63
71
80
90
50
53
56
60
63
67
71
75
80
85
90
95
100
112
125
140
160
180
71
75
80
85
90
95
100
106
112
118
125
132
140
150
160
180
200
224
112
118
125
132
140
150
160
170
180
190
200
212
224
236
250
280
315
355
160
180
200
224
236
250
280
315
355
400
450
500
180
190
200
212
224
236
250
265
280
300
315
335
355
375
400
450
500
560
630
800
250
280
315
355
400
450
500
560
630
710
800
355
375
400
425
450
475
500
530
560
600
630
670
710
750
800
900
1000
500
560
630
670
710
750
800
860
900
950
1000
1120
1250
1400
1600
63
67
71
75
80
85
90
95
100
106
112
118
125
132
140
150
160
180
200
224
90
95
100
106
112
118
125
132
140
150
160
170
180
190
200
224
250
280
315
140
150
160
170
180
190
200
212
224
236
250
265
280
315
355
375
400
450
500
180
200
224
236
250
280
315
355
375
400
450
500
560
630
224
236
250
265
280
300
315
335
355
375
400
450
500
560
630
710
800
1000
335
355
375
400
425
450
475
500
530
560
600
630
670
710
750
800
27
TABLE 3: Standard Pulley Pitch Diameters for Faster Shaft
180
190
200
212
224
236
250
265
280
315
335
355
400
450
500
560
630
710
112
118
125
132
140
150
160
170
180
190
200
212
224
236
250
280
315
355
400
71
75
80
85
90
95
100
106
112
118
125
132
140
150
160
170
180
190
200
224
250
280
56
60
63
71
80
85
90
95
100
112
125
140
160
180
200
140
150
160
180
200
224
250
280
315
335
355
400
450
500
630
90
100
106
112
118
125
132
140
160
180
190
200
212
224
250
280
315
63
71
80
90
95
100
106
112
118
125
132
140
150
160
180
200
40
45
50
56
63
71
80
90
100
112
125
140
160
XPCXPB/5VXXPAXPZ/3VXCXBXAXZX
28
TABLE 4:Section 8: Power Rating P(kW) for Arc of Contact 180°
0.010.020.030.05
0.000.000.010.010.010.010.010.010.020.020.020.020.020.030.030.030.030.030.040.040.040.040.040.040.050.050.050.050.050.060.060.060.060.060.060.070.070.070.070.070.080.080.080.080.080.090.090.090.090.090.090.100.100.100.100.110.110.110.110.110.120.120.130.130.130.140.140.140.150.15
0.010.020.030.06
0.000.000.010.010.010.010.010.020.020.020.020.020.030.030.030.030.040.040.040.040.040.050.050.050.050.050.060.060.060.060.060.070.070.070.070.070.080.080.080.080.090.090.090.090.090.100.100.100.100.100.110.110.110.110.110.120.120.120.120.120.130.130.140.140.150.150.150.160.160.17
700950
14502850
100200300400500600700800900
1000110012001300140015001600170018001900200021002200230024002500260027002800290030003100320033003400350036003700380039004000410042004300440045004600470048004900500051005200530054005500560057005800590060006200640066006800700072007400760078008000
NRPM
Pitch diameter of the smaller pulley (mm)
0.120.150.190.28
0.020.040.060.080.090.100.120.130.140.150.160.170.180.190.200.200.210.220.230.230.240.250.250.260.260.270.280.280.280.290.290.300.300.310.310.310.320.320.320.330.330.330.330.340.340.340.340.340.350.360.350.350.350.350.350.350.350.350.350.350.350.350.350.350.350.350.350.340.340.33
35
0.150.180.250.37
0.030.050.070.090.110.130.150.160.180.190.200.220.230.240.250.250.270.280.290.300.310.320.330.340.350.360.360.370.380.380.380.400.400.410.420.420.430.430.440.440.450.450.460.460.470.470.470.480.480.490.490.490.490.500.500.500.510.510.510.510.510.520.520.520.520.520.520.520.520.52
40
0.180.220.300.47
0.030.060.090.110.140.160.180.200.210.230.250.270.280.300.310.330.340.350.370.380.390.400.410.430.440.450.460.470.480.490.500.510.520.520.530.540.550.560.560.570.580.590.590.600.610.610.620.620.630.630.640.640.650.650.660.660.670.670.670.680.680.690.700.700.700.710.710.710.710.71
45
0.210.260.360.57
0.040.070.100.130.160.180.210.230.250.270.290.310.330.350.370.390.400.420.440.450.470.480.500.510.520.540.550.560.580.590.600.610.620.630.640.650.670.680.680.690.700.710.720.730.740.750.750.760.770.780.780.790.800.800.810.810.820.830.830.840.840.850.860.870.870.880.880.890.890.89
50
0.250.310.430.68
0.050.090.120.160.190.220.250.270.300.320.350.370.390.420.440.460.480.500.520.540.560.570.590.610.630.640.660.670.690.700.720.730.750.760.770.790.800.810.820.840.850.860.870.880.890.900.910.920.930.940.950.960.970.970.980.991.001.001.011.021.031.041.051.061.061.071.081.081.081.08
56
0.290.360.500.81
0.050.100.140.180.220.250.290.320.350.380.410.440.460.490.520.540.570.590.610.630.660.680.700.720.740.760.780.800.820.840.850.870.890.900.920.940.950.970.981.001.011.021.041.051.061.081.091.101.111.121.131.141.151.161.171.181.191.201.201.211.221.241.251.261.271.271.281.281.281.29
63
0.330.430.590.95
0.060.120.170.210.250.300.330.370.410.440.480.510.540.570.600.630.660.690.720.740.770.800.820.840.870.890.920.940.960.981.001.021.041.061.081.101.121.141.151.171.191.201.221.231.251.261.281.291.301.311.331.341.351.361.371.381.391.401.411.411.431.441.451.461.471.481.481.481.481.48
71
0.440.560.681.26
0.080.160.220.280.340.390.440.490.540.590.630.680.720.760.800.840.880.920.950.991.021.061.091.121.161.191.221.251.281.301.331.361.381.411.431.461.481.501.521.551.571.591.611.621.641.661.671.691.701.721.731.741.761.771.781.791.801.801.811.821.831.831.841.841.841.831.821.811.791.77
90
0.390.490.681.10
0.070.140.190.240.290.340.390.430.470.510.550.590.630.660.700.730.770.800.830.860.890.920.950.981.011.031.061.091.111.141.161.191.211.231.251.271.301.321.341.351.371.391.411.431.441.461.471.491.501.521.531.541.551.561.571.591.591.601.611.621.631.651.651.661.671.671.671.661.661.65
80
Additional Power(Kw) per belt for
speed ratio
0.000.000.000.01
0.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.020.020.020.020.020.020.020.02
1.01to
1.05
0.010.010.020.03
0.000.000.010.010.010.010.010.010.020.020.020.020.020.030.030.030.030.030.040.040.040.040.040.040.050.050.050.050.050.060.060.060.060.060.060.070.070.070.070.070.080.080.080.080.080.090.090.090.090.090.090.100.100.100.100.100.110.110.110.110.110.120.120.130.130.130.140.140.090.09
1.06to
1.26
1.27to
1.57
For>
1.57
29
TABLE 5: Section Z: Power Rating P(kW) for Arc of Contact 180°
700950
14502850
100200300400500600700800900950
100011001200130014001450150016001700180019002000210022002300240025002600270028002850290030003100320033003400350036003700380039004000410042004300440045004600470048004900500051005200530054005500560058006000620064006600680070007200740076007800800082008400
NRPM
Pitch diameter of the smaller pulley (mm)
0.190.220.290.42
0.040.080.090.120.150.160.190.190.210.220.230.240.260.270.280.290.300.310.320.330.340.360.360.380.390.390.390.400.420.420.420.420.430.440.450.460.460.470.470.480.480.480.480.490.490.500.500.500.500.500.510.520.520.520.520.520.520.520.520.530.530.510.510.510.500.500.480.480.460.460.440.440.43
45
0.230.290.380.58
0.050.100.150.150.190.200.230.270.270.290.300.310.340.370.370.380.400.400.430.450.450.470.480.500.520.520.540.550.570.580.580.590.610.610.630.650.650.660.660.680.680.680.700.700.710.710.720.730.730.750.750.750.760.760.780.780.780.780.780.810.840.790.790.790.790.790.790.800.770.770.760.750.74
50
0.290.360.490.77
0.060.120.180.180.230.250.290.330.340.360.380.390.430.460.470.490.500.520.550.590.590.620.630.660.690.690.720.720.750.770.770.770.800.810.840.860.870.880.880.900.920.920.940.950.971.001.001.001.001.021.021.031.051.051.071.071.071.081.081.111.111.111.121.121.131.131.131.131.121.121.111.111.10
56
0.350.440.610.99
0.070.140.210.220.280.300.350.400.420.440.470.490.540.580.590.610.630.650.690.730.740.790.790.830.870.870.910.920.960.990.990.991.021.031.061.101.101.131.141.171.191.191.221.221.251.271.271.301.301.331.341.341.371.371.401.401.401.421.421.471.471.471.471.491.501.501.501.501.501.491.491.481.47
63
0.430.540.751.23
0.080.160.240.260.330.370.430.490.510.540.570.600.660.710.720.750.770.800.850.900.910.960.981.031.071.081.131.141.181.231.231.231.271.291.331.371.371.411.421.451.461.491.531.531.571.581.591.631.631.661.671.681.711.711.741.751.761.771.781.831.831.841.851.861.871.871.881.881.881.871.861.851.83
71
Additional Power(Kw) per belt for
speed ratio
0.000.000.010.01
0.000.000.000.000.000.000.000.000.000.000.000.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.030.030.030.030.030.030.030.030.030.030.030.030.030.040.040.040.040.040.04
1.01to
1.05
0.020.020.030.07
0.000.000.010.010.010.010.020.020.020.020.020.030.030.030.030.030.040.040.040.040.050.050.050.050.060.060.060.060.060.070.070.070.070.070.080.080.080.080.090.090.090.090.100.100.100.100.110.110.110.110.120.120.120.120.130.130.130.130.130.140.140.150.150.160.160.170.170.180.180.190.190.200.20
1.06to
1.26
0.030.040.060.11
0.000.010.010.020.020.030.030.030.040.040.040.050.050.050.060.060.060.070.070.070.080.080.080.090.090.100.100.100.110.110.110.120.120.120.130.130.130.140.140.150.150.150.160.160.170.170.170.180.180.180.190.190.200.200.200.210.210.220.220.230.240.250.250.260.270.280.280.290.300.310.310.320.32
1.27to
1.57
0.030.040.060.12
0.000.010.010.020.020.030.030.030.040.040.040.050.050.060.060.060.060.070.070.080.080.090.090.100.100.100.110.110.120.120.120.130.130.130.140.140.150.150.160.160.160.170.170.180.180.190.190.190.200.200.210.210.220.220.230.230.230.240.240.250.260.270.280.290.290.300.310.320.330.340.350.350.36
For>
1.57
0.510.640.901.47
0.100.200.300.310.390.440.510.590.610.640.680.720.790.850.870.900.930.961.021.081.101.161.181.241.291.301.351.381.431.461.471.491.541.561.611.651.661.711.721.771.811.811.861.861.911.921.931.971.982.022.032.042.052.082.122.132.132.152.162.212.212.222.232.242.252.252.252.242.232.222.202.172.15
80
0.600.761.071.77
0.110.220.330.370.460.510.600.680.720.760.800.850.931.011.031.071.101.141.211.281.301.371.401.471.531.551.621.641.701.771.771.771.831.851.911.972.032.032.042.102.152.162.202.202.252.292.292.342.342.392.402.412.422.452.502.502.502.532.532.542.542.592.602.602.602.592.582.562.532.502.47
90
0.690.881.222.07
0.130.260.390.420.530.590.690.790.830.880.920.971.061.151.181.221.261.311.391.471.501.581.621.701.771.791.871.891.962.042.072.072.112.142.212.262.272.342.352.422.452.462.522.532.592.652.652.652.672.732.742.752.782.792.802.822.832.852.862.882.892.902.892.882.872.852.822.78
100
0.791.001.422.34
0.150.300.450.480.600.680.790.910.951.001.061.121.221.321.371.421.471.521.621.711.731.821.871.962.052.062.152.182.262.332.342.352.432.462.482.502.602.682.692.772.802.812.882.892.962.972.982.992.993.003.003.103.133.143.153.163.173.183.193.193.193.183.153.123.083.032.972.90
112
30
TABLE 6 Section APower Rating P(kW) for Arc of Contact 180°
31
700950
14502850
100200300400500600700800900950
10001100120013001400145015001600170018001900200021002200230024002500260027002800285029003000310032003300340035003600370038003900400041004200430044004500460047004800490050005100520053005400550056005700580059006000
NRPM
Pitch diameter of the smaller pulley (mm)
71 90 95 100 106
Additional Power(Kw) per belt for
speed ratio
0.020.020.030.06
0.000.000.010.010.010.010.020.020.020.020.020.020.030.030.030.030.030.030.040.040.040.040.050.050.050.050.050.060.060.060.060.060.060.070.070.070.070.080.080.080.080.080.090.090.090.090.100.100.100.100.100.110.110.110.110.110.120.120.120.120.130.130.13
1.01to
1.05
0.080.100.160.31
0.010.020.030.040.050.060.080.090.100.100.110.120.130.140.150.160.160.170.180.190.210.220.230.240.250.260.270.280.280.300.310.310.320.340.350.360.370.380.390.400.410.420.430.440.450.460.480.490.500.510.520.530.540.550.560.570.580.590.610.620.630.640.65
1.06to
1.26
0.120.160.250.49
0.020.030.050.070.090.100.120.140.160.160.170.190.210.220.240.250.260.280.290.310.330.350.360.380.400.420.430.450.470.480.490.500.520.540.550.570.590.610.620.640.660.670.690.710.730.740.760.780.800.810.830.850.870.880.900.920.930.950.970.991.001.021.04
1.27to
1.57
0.140.180.280.55
0.020.040.060.080.100.120.140.160.180.180.190.210.230.250.270.280.290.310.330.350.370.390.410.430.450.470.490.510.530.540.550.560.580.600.620.640.660.680.700.720.740.760.780.800.820.840.860.880.890.910.930.950.970.991.011.031.051.071.091.111.131.151.17
For>
1.5780
0.550.640.821.06
0.120.240.360.350.440.470.550.610.610.640.680.690.750.760.790.820.850.850.900.910.920.950.960.980.991.001.011.021.061.061.061.061.061.061.061.051.051.051.051.051.040.990.990.980.980.970.950.920.850.850.850.770.770.750.740.730.580.580.550.540.490.400.35
0.770.931.231.81
0.160.320.480.480.600.660.770.880.880.930.981.011.101.191.191.231.281.391.391.431.441.521.521.591.611.621.681.681.751.811.811.821.821.821.861.861.861.861.871.911.931.931.921.861.851.851.841.831.811.811.801.751.751.691.621.621.591.581.551.541.521.511.45
1.001.251.692.63
0.200.400.600.630.790.861.001.151.181.251.311.371.501.621.631.691.751.781.892.002.002.112.122.222.302.302.402.402.492.592.632.632.642.642.692.702.702.722.742.822.892.892.892.882.882.852.812.772.772.752.712.702.702.692.642.642.592.542.512.502.402.302.20
1.131.391.912.96
0.220.440.660.700.880.971.131.291.321.391.471.541.681.821.841.911.972.022.152.272.272.392.422.542.622.632.742.752.862.962.962.963.003.003.103.103.103.153.173.263.353.353.363.363.363.363.263.233.233.233.233.223.223.153.133.123.043.032.952.942.932.902.90
1.251.552.123.39
0.240.480.720.770.961.071.251.431.471.551.631.711.872.022.052.122.202.262.402.542.542.672.722.852.952.953.073.093.213.333.333.363.383.383.493.553.583.583.583.683.773.773.773.783.783.873.873.883.883.773.753.643.613.583.553.523.463.423.363.323.303.293.20
1.391.732.383.76
0.260.520.780.851.061.191.391.591.641.731.821.922.092.272.302.382.462.542.702.862.873.023.063.213.333.333.473.503.643.763.763.763.833.833.954.084.084.104.104.174.194.224.264.284.284.384.404.404.184.174.164.124.104.064.044.023.913.903.793.763.733.723.71
112
1.531.922.644.26
0.290.580.870.941.181.311.531.751.821.922.022.132.322.522.552.642.732.823.003.173.193.363.413.573.743.803.873.894.044.194.264.264.274.274.414.414.434.564.564.654.714.724.744.754.764.884.664.664.644.644.544.544.534.484.474.464.444.31
32
TABLE 6: Section A: Power Rating P(kW) for Arc of Contact 180°
700950
14502850
100200300400500600700800900950
100011001200130014001450150016001700180019002000210022002300240025002600270028002850290030003100320033003400350036003700380039004000410042004300440045004600470048004900500051005200530054005500
NRPM
Pitch diameter of the smaller pulley (mm)
125118
Additional Power(Kw) per belt for
speed ratio
132 140 150 160 180
0.020.020.030.06
0.000.000.010.010.010.010.020.020.020.020.020.020.030.030.030.030.030.030.040.040.040.040.050.050.050.050.050.060.060.060.060.060.060.070.070.070.070.080.080.080.080.080.090.090.090.090.100.100.100.100.100.110.110.110.110.110.120.12
1.01to
1.05
0.080.100.160.31
0.010.020.030.040.050.060.080.090.100.100.110.120.130.140.150.160.160.170.180.190.210.220.230.240.250.260.270.280.280.300.310.310.320.340.350.360.370.380.390.400.410.420.430.440.450.460.480.490.500.510.520.530.540.550.560.570.580.59
0.120.160.250.49
0.020.030.050.070.090.100.120.140.160.160.170.190.210.220.240.250.260.280.290.310.330.350.360.380.400.420.430.450.470.480.490.500.520.540.550.570.590.610.620.640.660.670.690.710.730.740.760.780.800.810.830.850.870.880.900.920.930.95
1.06to
1.26
1.27to
1.57
0.140.180.280.55
0.020.040.060.080.100.120.140.160.180.180.190.210.230.250.270.280.290.310.330.350.370.390.410.430.450.470.490.510.530.540.550.560.580.600.620.640.660.680.700.720.740.760.780.800.820.840.860.880.890.910.930.950.970.991.011.031.051.07
For>
1.57
1.672.102.904.69
0.310.620.931.021.281.431.671.911.992.102.212.332.542.752.802.903.003.103.293.493.503.683.753.934.024.084.254.284.454.614.694.694.704.704.844.894.894.964.965.105.245.265.295.295.315.345.335.225.175.175.164.974.974.864.864.854.834.80
1.832.303.205.10
0.340.681.021.121.401.571.832.092.182.302.422.562.793.033.093.203.313.413.623.843.854.054.134.334.504.504.694.724.905.005.105.105.145.175.345.505.505.525.555.605.755.755.795.585.565.525.525.495.415.415.305.205.10
2.002.513.495.65
0.370.741.111.211.511.712.002.282.382.512.642.793.043.303.373.493.613.733.964.204.224.444.514.734.914.915.125.155.355.555.655.655.665.665.805.885.885.995.996.086.206.206.186.176.176.085.985.975.905.895.875.555.55
2.172.743.826.16
0.400.801.201.321.651.862.172.482.602.742.893.063.343.623.693.823.954.084.344.594.624.864.945.185.415.415.595.625.846.056.166.166.176.176.326.326.326.416.416.596.596.486.486.476.476.436.436.42
2.403.044.236.68
0.440.881.321.461.832.062.402.752.883.043.203.383.693.994.084.234.374.514.795.075.105.375.465.725.935.936.186.206.446.686.686.786.786.796.937.147.147.157.157.177.377.197.196.976.976.886.886.54
2.633.334.637.28
0.480.961.441.591.992.252.633.003.153.333.503.704.044.374.474.634.794.945.255.565.585.875.966.246.536.636.736.747.007.267.287.287.327.337.497.737.547.497.487.487.467.457.417.37
3.073.905.418.48
0.551.101.651.862.332.633.073.513.693.904.104.334.725.125.225.415.595.766.126.486.496.836.917.247.577.677.767.768.048.348.488.488.358.338.338.298.258.20
TABLE 7:Section B: Power Rating P(kW) for Arc of Contact 180°
33
700950
14502850
100200300400500600700800900950
1000110012001300140014501500160017001800190020002100220023002400250026002700280028502900300031003200330034003500360037003800390040004100420043004400450046004700480049005000
NRPM
Pitch diameter of the smaller pulley (mm)
112 125
Additional Power(Kw) per belt for
speed ratio
0.030.050.070.14
0.000.010.010.020.020.030.030.040.040.050.050.050.060.060.070.070.070.080.080.090.090.100.100.110.110.120.120.13.0130.140.140.140.140.150.150.160.160.170.170.180.180.190.190.200.200.210.210.220.220.230.230.240.24
1.01to
1.05
0.170.230.350.69
0.020.050.070.100.120.140.170.190.220.230.240.270.290.310.340.350.360.390.410.430.460.480.510.530.560.580.600.630.650.680.690.700.720.750.770.800.820.840.870.890.920.940.970.991.011.041.061.091.111.131.161.181.21
1.06to
1.26
0.270.370.561.10
0.040.080.120.150.190.230.270.310.350.370.390.420.460.500.540.560.580.620.660.700.730.770.810.850.890.950.971.001.041.081.101.121.161.201.241.271.311.351.391.431.471.511.551.581.621.661.701.741.781.821.851.891.93
1.27to
1.57
0.300.410.631.24
0.040.090.130.170.220.260.300.350.390.410.430.480.520.560.610.630.650.690.740.780.820.870.910.961.001.041.091.131.171.221.241.261.301.351.391.431.481.521.561.611.651.691.741.781.821.871.911.952.002.042.082.132.17
For>
1.57132 140 150 160 170 180
1.551.942.493.27
0.330.660.791.051.321.331.551.631.831.942.042.102.192.382.452.492.502.502.662.812.822.822.822.952.952.962.982.983.103.213.273.303.203.103.053.032.982.932.892.872.852.592.572.402.372.351.991.981.871.711.601.491.40
2.032.483.294.71
0.410.821.231.271.591.742.032.322.352.482.612.712.963.203.253.293.413.453.673.723.793.893.984.174.204.204.304.304.474.634.714.724.724.734.744.674.664.454.344.344.294.224.213.893.873.843.503.453.103.102.802.712.70
2.292.823.765.46
0.460.921.381.431.791.962.292.612.672.822.973.083.363.503.633.763.893.954.204.364.364.594.594.814.864.864.984.985.175.365.465.465.465.465.455.455.455.214.994.994.954.934.924.594.594.304.294.283.803.733.283.283.27
2.583.194.295.99
0.511.021.531.602.002.212.582.953.023.193.363.503.824.144.144.294.444.524.805.095.155.265.275.525.595.595.745.745.965.985.995.996.006.006.106.296.306.326.356.376.545.895.605.355.324.864.824.82
2.943.654.946.89
0.571.141.711.822.282.522.943.363.463.653.844.024.394.754.774.945.115.215.545.785.786.086.096.386.476.476.656.656.776.776.897.017.017.057.067.286.996.979.846.816.816.596.455.995.985.565.555.48
3.554.125.587.89
0.631.261.892.032.543.053.553.903.904.124.334.534.945.355.395.585.785.896.266.546.546.886.907.237.327.327.527.527.817.897.897.917.967.967.967.997.897.817.567.347.247.247.23
3.654.576.218.62
0.691.382.072.252.813.133.654.174.334.574.815.045.505.966.006.216.436.566.977.277.277.657.678.048.408.408.408.448.618.618.628.778.998.999.019.058.558.558.398.327.967.957.90
4.015.146.989.22
0.751.502.252.463.083.444.014.334.875.145.415.546.046.266.746.987.227.407.667.798.228.328.428.768.769.119.119.119.189.219.229.259.259.229.229.219.199.18
TABLE 7:Section B: Power Rating P(kW) for Arc of Contact 180°
34
700950
14502850
100200300400500600700800900950
100011001200130014001450150016001700180019002000210022002300240025002600270028002850290030003100320033003400350036003700380039004000
NRPM
Pitch diameter of the smaller pulley (mm)
190
Additional Power(Kw) per belt for
speed ratio
0.030.050.070.14
0.000.010.010.020.020.030.030.040.040.050.050.050.060.060.070.070.070.080.080.090.090.100.100.110.110.120.120.13.0130.140.140.140.140.150.150.160.160.170.170.180.180.190.19
1.01to
1.05
0.170.230.350.69
0.020.050.070.100.120.140.170.190.220.230.240.270.290.310.340.350.360.390.410.430.460.480.510.530.560.580.600.630.650.680.690.700.720.750.770.800.820.840.870.890.920.940.97
1.06to
1.26
0.270.370.561.10
0.040.080.120.150.190.230.270.310.350.370.390.420.460.500.540.560.580.620.660.700.730.770.810.850.890.950.971.001.041.081.101.121.161.201.241.271.311.351.391.431.471.511.55
1.27to
1.57
0.300.410.631.24
0.040.090.130.170.220.260.300.350.390.410.430.480.520.560.610.630.650.690.740.780.820.870.910.961.001.041.091.131.171.221.241.261.301.351.391.431.481.521.561.611.651.691.74
For>
1.57200 212 224 236 250 280
4.365.467.449.89
0.811.622.432.673.343.744.364.995.175.465.746.036.587.137.187.447.697.858.348.698.699.149.149.589.639.639.839.839.859.899.899.939.859.859.789.659.649.63
4.705.908.04
10.99
0.871.742.612.883.604.034.705.375.595.906.216.527.117.717.768.048.318.479.009.539.709.839.83
10.3010.3210.3210.5110.5110.9110.9810.9910.9910.9110.4110.4110.1210.1210.10
5.126.438.73
11.45
0.941.882.823.133.914.395.125.856.096.436.777.107.758.398.438.739.039.209.78
10.3510.4510.6210.6211.1311.2011.2011.2511.2511.2511.2511.4511.6512.05
5.536.949.42
11.88
1.012.023.033.374.214.745.536.326.576.947.307.668.369.059.099.429.749.90
10.5210.8810.8811.3611.3611.9012.4412.4412.3011.9011.9011.8811.8811.8711.84
5.947.45
10.0912.28
1.082.163.243.624.535.095.946.797.067.457.848.228.979.719.74
10.0910.4410.5811.2411.5311.7312.0012.0612.6312.4512.4512.4512.4512.3112.3112.2812.2712.20
6.418.03
10.84
1.172.343.513.914.895.496.417.327.618.038.468.869.67
10.4710.4710.8411.2211.3512.0612.3612.3613.0113.0113.0613.0613.6314.20
7.409.26
12.73
1.342.684.024.515.646.347.408.458.779.269.74
10.1811.1111.4112.2912.7312.7712.8813.5913.5913.8514.0614.1914.2614.2614.8815.50
TABLE 8:Section 20: Power Rating P(kW) for Arc of Contact 180°
700950
14502850
50100150200250300350400450500550600650700750800850900950
10001050110011501200125013001350140014501500155016001650170017501800185019001950200020502100215022002250230023502400245025002550260026502700275028002850290029503000
NRPM
Pitch diameter of the smaller pulley (mm)
2.833.464.415.02
0.360.640.891.111.331.521.721.892.062.222.392.542.692.832.963.093.223.343.463.573.683.783.893.994.074.164.244.334.414.484.554.614.684.734.804.844.894.944.975.015.045.075.095.115.135.145.155.155.155.155.145.135.115.095.075.035.024.964.924.87
140
3.604.435.726.61
0.430.781.091.381.641.902.142.382.592.813.003.223.413.603.773.944.114.284.434.594.734.875.015.145.275.395.515.625.725.825.926.026.106.186.256.336.396.466.516.576.616.656.696.726.746.766.776.786.786.786.776.766.746.716.676.646.616.546.496.43
160 200
5.086.318.168.81
0.591.071.501.902.282.642.983.323.633.944.234.534.815.085.345.585.836.076.316.516.736.937.147.327.517.687.858.008.168.318.438.568.688.798.909.009.089.169.229.299.339.379.419.439.449.459.449.439.409.369.319.269.199.129.028.928.818.688.558.41
224
5.937.359.499.45
0.681.231.732.202.653.073.473.864.234.594.955.285.615.936.236.526.817.107.357.617.868.108.338.558.768.959.159.339.499.669.819.94
10.0710.1810.2810.3810.4710.5310.5910.6410.6810.7010.7110.7110.6910.6710.6310.5710.5110.4210.3210.2210.109.969.819.639.459.269.048.80
236
6.347.87
10.13
0.721.321.852.352.833.273.724.134.534.915.295.666.116.346.676.997.297.597.878.158.418.668.919.149.359.579.769.95
10.1310.2910.4410.5810.7410.8210.9211.0211.0911.1611.2211.2411.2611.2611.2611.2411.2111.1611.0911.0210.9210.8110.6810.5310.3710.2110.02
250
6.838.47
10.83
0.781.411.992.533.033.523.994.444.875.295.696.086.466.837.187.527.848.168.478.769.049.319.569.81
10.0310.2510.4510.6510.8310.9911.1511.2911.4011.5111.6111.7111.7611.8211.8511.8611.8711.8511.8211.7711.7111.6311.5211.4011.2811.12
8.9611.0313.62
1.021.852.603.323.994.635.255.846.426.977.488.008.498.969.419.84
10.2610.6511.0311.3811.7212.0312.3212.5912.8413.0713.2713.4613.6213.7513.8613.9414.0114.0414.0414.0213.9813.9013.7913.6513.4913.2913.0612.8012.51
315280
7.839.69
12.21
0.891.612.282.893.484.044.585.105.596.076.536.997.417.838.238.628.979.349.69
10.0110.3110.6210.8911.1611.4011.6311.8512.0412.2112.3812.5212.6512.7412.8312.9012.9512.9712.9712.9612.9312.8612.7912.6812.5512.4012.2312.0311.8011.5611.29
Additional Power(Kw) per belt for
speed ratio
355
10.2012.4514.91
1.162.112.973.794.565.295.996.677.327.958.549.129.67
10.2010.6911.1711.6212.0512.4512.8213.1813.4913.7814.0514.2814.4814.6614.8014.9114.9915.0315.0315.0114.9514.8414.7114.5314.3114.0513.76
1.01to
1.05
0.040.050.070.15
0.000.010.010.010.010.020.020.020.020.030.030.030.030.040.040.040.040.050.050.050.050.060.060.060.060.070.070.070.070.080.080.080.080.090.090.090.090.100.100.100.110.110.110.110.120.120.120.120.130.130.130.130.140.140.140.140.150.150.150.15
1.06to
1.26
0.180.240.370.73
0.010.030.040.050.060.080.090.100.120.130.140.150.170.180.190.210.220.230.240.260.270.280.290.310.320.330.350.360.370.380.400.410.420.440.450.460.470.490.500.510.530.540.550.560.580.590.600.620.630.640.650.670.680.690.710.720.730.740.760.77
1.27to
1.57
0.290.390.591.17
0.020.040.060.080.100.120.140.160.180.210.230.250.270.290.310.330.350.370.390.410.430.450.470.490.510.530.550.570.590.620.640.660.680.700.720.740.760.780.800.820.840.860.880.900.920.940.960.981.011.031.051.071.091.111.131.151.171.191.211.23
For>
1.57
0.320.440.671.31
0.020.050.070.090.120.140.160.180.210.230.250.280.300.320.350.370.390.420.440.460.480.510.530.550.580.600.620.650.670.690.710.740.760.780.810.830.850.880.900.920.950.970.991.011.041.061.081.111.131.151.181.201.221.251.271.291.311.341.361.38
4.345.386.987.87
0.520.931.301.641.972.272.562.853.123.383.633.884.114.344.564.774.985.185.385.565.755.926.096.256.426.566.716.856.987.107.217.337.437.547.627.717.807.867.947.998.058.098.138.168.198.208.218.218.218.198.188.148.108.068.007.947.877.807.717.61
180 400
12.4315.2718.65
1.602.453.064.355.246.146.997.928.709.57
10.2911.0511.7412.4313.1113.8014.2914.7815.2715.7616.2416.7317.2217.7117.9018.0918.2718.4618.6518.8419.0219.21
450
14.0417.03
2.042.933.684.986.007.027.999.069.93
10.9111.7012.5413.2914.0414.7915.5416.0416.5317.0317.5318.0218.5219.0119.51
500
16.4219.05
3.674.525.616.757.888.97
10.1511.1312.2213.0914.0514.8415.6316.4217.2117.6718.1318.5919.0519.5119.9720.4320.89
35
TABLE 9:Section C: Power Rating P(kW) for Arc of Contact 180°
36
700950
14502850
50100150200250300350400450500550600650700750800850900950
1000105011001150120012501300135014001450150015501600165017001750180018501900195020002050210021502200225023002350240024502500255026002650270027502800285029002950300030503100315032003250
NRPM
Pitch diameter of the smaller pulley (mm)
180 200 212 224 236 250 265 280
Additional Power(Kw) per belt for
speed ratio
0.080.110.160.32
0.010.010.020.020.030.030.040.050.050.060.060.070.070.080.080.090.100.100.110.110.120.120.130.140.140.150.150.160.160.170.180.180.190.190.200.200.210.220.220.230.230.240.240.250.250.260.270.270.280.280.290.290.300.310.310.320.320.330.330.340.350.350.360.360.37
1.01to
1.05
0.400.540.821.61
0.030.060.080.110.140.170.200.230.250.280.310.340.370.400.420.450.480.510.540.570.590.620.650.680.710.740.760.790.820.850.880.910.930.960.991.021.051.071.101.131.161.191.221.241.271.301.331.361.391.411.441.471.501.531.561.581.611.641.671.701.731.751.781.811.84
1.06to
1.26
0.630.861.312.58
0.050.090.140.180.230.270.320.360.410.450.500.540.590.630.680.720.770.810.860.910.951.001.041.091.131.181.221.271.311.361.401.451.491.541.581.631.671.721.771.811.861.901.951.992.042.082.132.202.222.262.312.352.402.442.492.532.582.632.672.722.762.812.852.902.94
1.27to
1.57
0.710.971.482.90
0.050.100.150.200.250.310.360.410.460.510.560.610.660.710.760.810.870.920.971.021.071.121.171.221.271.321.371.42.1.481.531.581.631.681.731.781.831.881.931.982.042.092.142.192.242.292.342.392.442.492.542.602.652.702.752.802.852.902.953.003.053.103.153.213.263.31
For>
1.57
4.515.607.237.54
0.531.061.591.692.112.352.743.133.233.593.774.114.464.514.834.975.285.595.605.905.986.276.506.506.776.817.077.217.237.417.457.697.717.777.917.938.118.118.128.198.208.408.418.428.438.448.458.618.458.358.258.248.217.867.757.667.547.517.407.406.986.756.636.616.52
5.667.089.24
10.13
0.641.281.922.072.592.903.383.874.024.474.715.145.575.666.066.266.657.047.087.457.587.948.278.278.618.699.029.229.249.569.579.88
10.1910.1910.2710.2810.4810.4910.5010.5510.5810.8411.1011.6811.6911.9011.9111.1410.8310.8210.7010.6910.6510.2010.1910.1410.1310.109.479.399.239.238.628.618.59
6.357.95
10.4211.11
0.701.402.102.302.883.223.764.294.484.985.265.746.226.356.807.027.467.907.958.378.528.939.319.319.709.78
10.1610.4110.4210.7810.7811.1311.4811.4911.5811.5911.8211.8911.9912.0812.0912.2112.2512.2612.2912.2912.3012.5411.9111.8911.7611.7511.6511.4211.4111.1211.1110.7510.7310.55
7.028.81
11.7912.34
0.761.522.282.523.153.544.134.724.955.505.816.346.877.027.527.778.268.748.819.279.459.90
10.3110.3310.7610.8611.2811.7011.7911.9611.9712.3612.7412.7512.8512.8913.0113.0313.0613.4013.4213.5213.8413.6113.5813.5613.5513.4913.4513.3713.3313.1613.1212.4912.4512.4212.3411.9111.8711.86
7.699.67
12.67
0.831.662.492.753.443.874.525.165.416.016.366.947.527.698.248.529.059.599.67
10.1810.3710.8611.3111.3311.8011.9112.3712.6312.6713.1113.1113.5313.5913.6614.0614.0914.6914.7314.7514.6414.4014.3914.3714.3514.2914.2814.2114.1914.1814.1513.9413.9113.6113.5913.49
8.4710.6414.21
0.901.802.703.003.754.244.955.655.946.606.997.638.268.479.089.389.97
10.5510.6411.2011.4211.9612.5112.6912.9913.1013.6014.1114.2114.4114.4114.8815.3415.4115.4315.5615.7015.7515.8515.9916.0516.0816.4716.0016.0015.9815.9415.4115.3915.01
9.2811.6715.59
0.981.962.943.284.104.645.416.196.517.237.678.379.069.289.94
10.2910.9311.5811.6712.2812.5213.1213.7113.7914.2414.3514.9015.4515.5915.7715.7916.2416.2916.3316.8116.8917.0917.1017.1117.3317.3517.3817.8016.9016.8916.7316.7316.4516.4116.40
10.0912.6916.85
1.062.123.183.554.445.035.876.717.077.868.339.099.84
10.0910.8111.1811.8812.5812.6913.3613.6014.2514.6914.8315.4515.5616.1616.7616.8517.0617.0917.5517.5917.6017.8717.8818.3818.8718.6918.5618.1218.1118.0318.0218.01
TABLE 9: Section C: Power Rating P(kW) for Arc of Contact 180°
37
700950
14502850
50100150200250300350400450500550600650700750800850900950
10001050110011501200125013001350140014501500155016001650170017501800185019001950200020502100215022002250
NRPM
Pitch diameter of the smaller pulley (mm)
300
Additional Power(Kw) per belt for
speed ratio
315 335 355 375 400 450
0.080.110.160.32
0.010.010.020.020.030.030.040.050.050.060.060.070.070.080.080.090.100.100.110.110.120.120.130.140.140.150.150.160.160.170.180.180.190.190.200.200.210.220.220.230.230.240.240.250.25
1.01to
1.05
0.400.540.821.61
0.030.060.080.110.140.170.200.230.250.280.310.340.370.400.420.450.480.510.540.570.590.620.650.680.710.740.760.790.820.850.880.910.930.960.991.021.051.071.101.131.161.191.221.241.27
1.06to
1.26
0.630.861.312.58
0.050.090.140.180.230.270.320.360.410.450.500.540.590.630.680.720.770.810.860.910.951.001.041.091.131.181.221.271.311.361.401.451.491.541.581.631.671.721.771.811.861.901.951.992.04
1.27to
1.57
0.710.971.482.90
0.050.100.150.200.250.310.360.410.460.510.560.610.660.710.760.810.870.920.971.021.071.121.171.221.271.321.371.42.1.481.531.581.631.681.731.781.831.881.931.982.042.092.142.192.242.29
For>
1.57
11.1314.0118.59
1.162.323.483.924.905.556.487.407.818.689.21
10.0510.8811.1311.9312.3613.1313.9114.0114.7515.0115.7316.4416.4917.0217.1117.7718.4318.5918.7018.7919.2019.8019.8119.8519.8919.9420.4819.5219.5119.4419.4319.2319.2119.20
11.9414.9819.63
1.242.483.724.195.245.946.937.928.369.299.86
10.7611.6511.9412.7913.2314.0614.8814.9815.7716.0316.7917.5617.6118.1518.2218.9219.6219.6319.8619.7120.3520.9820.9720.9620.9520.9220.4720.4720.44
12.9816.2420.62
1.342.684.024.555.696.457.538.609.09
10.1010.7211.6912.6712.9813.9114.3615.2616.1616.2417.1017.3618.1918.3618.8219.6019.6420.4020.6020.6221.3321.3621.3921.4921.5422.8922.5922.5521.5721.5621.32
14.0017.4722.68
1.442.884.324.916.146.978.139.29
10.4511.5511.5712.6213.6714.0015.0015.4716.4417.4017.4718.3918.6419.5320.4220.6020.9920.9821.7922.5922.6822.6922.3622.5022.6122.6722.6622.6522.5922.4422.3922.02
15.7918.6623.13
1.543.084.625.266.587.478.729.96
11.2012.3512.4113.5414.6715.7916.3216.5617.6018.6318.6619.6419.8820.8320.9421.4222.3122.3322.8622.8723.1323.9323.4823.4423.4324.3623.33
16.2220.1324.46
1.673.345.015.707.138.109.45
10.8011.4112.6813.4414.6615.8816.2217.3817.8919.0120.1320.1321.1621.3622.3822.4822.9023.3023.6923.9824.2624.4625.1024.7024.6924.6924.5924.42
18.5822.7926.56
1.923.845.766.578.219.34
10.9012.4513.1414.6015.4616.8718.2718.5819.9120.4221.7022.6922.7923.9924.0724.6225.1125.5325.8826.1726.3726.4926.5626.5426.4326.2425.9625.5925.13
TABLE 10:Section 25: Power Rating P(kW) for Arc of Contact 180°
700950
1450
50100150200250300350400450500550600650700750800850900950
1000105011001150120012501300135014001450150015501600165017001750180018501900195020002050210021502200225023002350240024502500
NRPM
Pitch diameter of the smaller pulley (mm)
6.087.348.72
0.751.351.882.362.843.263.684.074.444.805.155.475.786.086.366.536.887.127.347.547.747.928.088.238.368.478.578.668.728.778.808.828.818.788.748.688.608.508.388.248.087.897.687.467.206.936.636.315.975.60
224
6.918.40
10.09
0.831.502.102.653.183.674.144.595.025.445.836.216.576.917.247.557.858.138.408.658.889.109.309.589.639.779.90
10.0010.0910.1510.2110.2310.2410.2210.1910.1210.059.949.819.669.489.289.058.818.538.227.897.537.156.73
236
7.899.62
11.63
0.921.672.342.973.574.144.685.205.696.176.627.067.497.898.278.638.999.319.629.91
10.1910.4410.6710.8811.0711.2511.4011.5211.6311.7211.7811.8111.8211.8111.7711.7111.6211.5011.3611.1910.9910.7510.5010.219.899.539.168.748.297.81
250
9.9312.1714.73
1.112.032.083.674.425.145.826.477.127.738.308.879.419.93
10.4210.8911.3411.7712.1712.5412.8913.2313.5213.7914.0414.2614.4514.6114.7314.8414.9114.9414.9414.9214.8414.7414.6114.4314.2213.9713.6913.3612.9912.5812.13
280
12.2415.0117.99
1.342.463.504.465.396.287.137.958.749.50
10.2310.9211.6012.2412.8613.4414.0014.5215.0115.4715.8916.2916.6416.9617.2417.4817.6917.8617.9918.0618.1018.0918.0417.9417.8017.6017.3717.0716.7116.32
315
Additional Power(Kw) per belt for
speed ratio
560
26.3330.36
2.885.347.659.83
11.9113.9015.7917.5919.3020.9222.4423.8525.1526.3327.4028.3429.1529.8230.3630.7330.9631.0130.9030.6130.14
23.2527.42
2.504.656.668.55
10.3612.0913.7515.3316.8518.2919.6620.9422.1423.2524.2825.2226.0526.7927.4227.9428.3428.6328.8028.8528.75
500
20.4924.5426.07
2.194.075.817.479.04
10.5612.0113.4114.7316.0217.2318.3819.4720.4921.4522.3423.1423.8824.5425.1125.6126.0026.3126.5326.6426.6526.5726.3626.0725.64
450
17.5721.2923.97
1.883.484.966.377.719.00
10.2311.4312.5613.6614.7115.7216.6717.5718.4319.2319.9720.6621.2921.8622.3722.8223.2023.5123.7523.9324.0124.0323.9723.82
400
14.8118.0821.15
1.592.944.195.376.497.568.609.60
10.5611.4812.3713.2114.0314.8115.5416.2416.9017.5118.0818.6119.0919.5319.9120.2620.5420.7820.9621.0821.1521.1621.1120.9920.8220.5820.27
355
0.120.160.25
0.010.020.030.030.040.050.060.070.080.090.100.100.110.120.130.140.150.160.160.170.180.190.200.210.220.230.230.240.250.260.270.280.290.290.300.310.320.330.340.350.360.360.370.380.390.400.410.420.420.43
1.01to
1.05
0.610.821.26
0.040.090.130.170.220.260.300.350.390.430.480.520.560.610.650.690.740.780.820.870.910.951.001.041.081.131.171.211.261.301.341.391.431.471.521.561.601.651.691.731.781.821.861.911.951.992.042.082.122.17
1.06to
1.26
0.971.322.01
0.070.140.210.280.350.420.490.550.620.690.760.830.900.971.041.111.181.251.321.391.461.531.601.661.731.801.871.942.012.082.152.222.292.362.432.502.572.642.702.772.842.912.983.053.123.193.263.333.403.47
1.27to
1.57
1.091.482.26
0.080.160.230.310.390.470.550.620.700.780.860.941.011.091.171.251.331.401.481.561.641.721.791.871.952.032.102.182.262.342.422.492.572.652.732.812.882.963.043.123.203.273.353.433.513.593.663.743.823.90
For>
1.57630
31.16
3.566.168.78
11.3913.7616.1218.2720.4222.3624.3026.0027.7029.4331.1632.89
710
34.53
4.357.05
10.0513.0515.7418.4220.8423.2525.4127.5629.3731.1832.8534.5336.20
800
37.65
5.238.09
11.4614.8317.8820.9323.6426.3528.6430.9232.8034.6836.1737.6539.14
38
TABLE 11:Section D: Power Rating P(kW) for Arc of Contact 180°
700950
20406080
100120140160180200220240260280300320340360380400420440460480500520540560580600620640660680700720740760780800820840860880900920940960980
100010201040106010801100112011401160118012001220124012601280130013201340136013801400
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
0.230.31
0.010.010.020.030.030.040.050.050.060.060.070.080.080.090.100.100.110.120.120.130.140.140.150.160.160.170.180.180.190.190.200.210.210.220.230.230.240.250.250.260.270.270.280.290.290.300.310.310.320.320.330.340.340.350.360.360.370.380.380.390.400.400.410.420.420.430.440.440.450.45
1.01to
1.05
1.141.54
0.030.060.100.130.160.190.230.260.290.320.360.390.420.450.490.520.550.580.620.650.680.710.750.780.810.840.880.910.940.971.011.041.071.101.141.171.201.231.271.301.331.361.401.431.461.491.531.561.591.621.661.691.721.751.791.821.851.881.921.951.982.012.052.082.112.142.182.212.242.27
1.822.47
0.050.100.160.210.260.310.360.420.470.520.570.620.680.730.780.830.880.940.991.041.091.141.201.251.301.351.401.461.511.561.611.661.721.771.821.871.921.982.032.082.132.182.242.292.342.392.442.502.552.602.652.702.762.812.862.912.963.023.073.123.173.223.283.333.383.433.483.533.593.64
1.06to
1.26
1.27to
1.57
2.052.78
0.060.120.180.230.290.350.410.470.530.580.640.700.760.820.880.940.991.051.111.171.231.291.341.401.461.521.581.641.691.751.811.871.931.992.052.102.162.222.282.342.402.452.512.572.632.692.752.812.862.922.983.043.103.163.213.273.333.393.453.513.563.623.683.743.803.863.923.974.034.09
For>
1.57
16.0519.43
0.831.532.182.793.383.954.495.035.546.056.557.047.517.988.438.889.329.77
10.1910.6111.0111.4211.8212.2112.5912.9713.3513.7014.0614.4114.7515.0915.4215.7416.0516.3716.6716.9717.2517.5417.8118.0818.3418.6018.8419.0819.3119.5319.7519.9620.1620.3620.5420.7220.9021.0021.1021.3621.4921.6221.7521.8521.9622.0522.1422.2222.2922.3422.4022.44
315
20.1224.35
1.011.862.653.404.134.835.516.176.837.478.098.699.299.88
10.4611.0311.5812.1412.6713.2013.7214.2414.7415.2415.7216.2016.6717.1417.5918.0318.4718.8919.3119.7220.1220.5220.9021.2721.6321.9822.3322.6723.0023.3223.6323.9324.2124.5024.7625.0225.2625.5025.7425.9526.1626.3626.5326.7126.8727.0227.1527.2927.3927.5027.5927.6727.7427.7927.8427.86
355
22.1026.71
1.092.022.893.714.505.276.026.757.478.168.859.81
10.1710.8311.4612.0912.7113.3013.9014.4815.0615.6216.1816.7317.2617.7918.3018.8219.3119.8020.2920.7521.2121.6622.1022.5322.9523.3623.7624.1524.5324.8925.2425.5925.9226.2526.5726.8627.1527.4327.6927.9528.1928.4128.6328.8329.0329.2129.3729.5329.6629.7929.8930.0130.0830.1530.2030.2430.2730.29
375
24.5329.56
1.202.223.174.084.975.826.657.478.259.039.80
10.5411.2811.9912.7113.4014.0814.7515.4116.0716.7117.3417.9618.5619.1619.7520.3320.8821.4421.9822.5123.0423.5424.0324.5325.0025.4625.9026.1426.7827.1827.5827.9728.3528.7129.0629.4029.7230.0330.3230.6030.8731.1231.3531.5731.7831.9732.1432.3232.4632.5932.7132.8032.8832.9532.9933.0233.0333.0333.23
400
26.8932.28
1.302.423.474.465.436.367.288.179.049.89
10.7311.5512.3613.1613.9314.7015.4616.1916.9317.6418.3119.0419.7120.3821.0321.6822.3122.9223.5324.1324.7125.2725.8226.3726.8927.4127.9128.3928.8629.3329.7730.2030.6131.0131.4031.7632.1132.4532.7733.0833.3633.6333.8834.1334.3534.5534.7334.8935.0435.1835.2835.3735.4535.5135.5335.5435.5335.5135.4635.39
425
29.2034.88
1.412.613.764.845.896.917.908.879.82
10.7511.6712.5613.4414.3015.1515.9916.8117.6218.4119.1919.9620.7121.4522.1822.8823.5824.2724.9325.5926.2326.8527.4628.0628.6329.2029.7630.2830.8131.3131.7932.2632.7133.1533.4633.9634.3534.7035.0535.3735.6935.9736.2436.4936.7236.9337.1237.2837.4237.5537.6537.7337.7937.8237.8337.8237.7937.7437.6537.5537.41
450
30.3635.92
1.522.844.075.096.127.158.179.20
10.2211.2512.1813.1114.0314.9615.8916.7317.5818.4219.2720.1120.8721.6222.3823.1323.8924.5425.1925.8426.4927.3427.9428.5529.1529.7630.3630.8631.3631.8632.3632.8632.9133.4634.0234.5735.1235.4535.7736.1036.4236.7536.9737.1937.4137.6337.8537.9638.0838.1938.3138.4238.4138.4038.3838.3738.3638.2238.0837.9337.7937.65
475 500
33.6539.69
1.623.014.335.596.807.989.14
10.2611.3612.4413.5114.5515.5716.5817.5718.5319.4920.4221.3422.2423.1323.9924.8425.6826.4927.2928.0828.8329.5830.3031.0231.7032.3733.0233.6534.2534.8435.4135.9536.4836.9837.4637.9238.3638.7739.1539.5939.8640.1640.4640.7240.9541.1641.3541.5141.6341.7441.8041.8541.8641.8441.8041.7341.6241.4941.1440.2239.9439.0438.09
34.9240.72
1.753.334.725.917.118.319.50
10.7011.8913.0914.1415.1916.2517.3018.3519.3320.3121.2822.2623.2424.1124.9925.8626.7427.6128.4029.1929.9730.7631.5532.2232.9033.5734.2534.9235.4936.0536.6237.1837.7538.1838.6139.0339.4639.8940.2040.5140.8341.1441.4541.6141.7741.9242.0842.2442.2642.2942.3142.3442.3642.3142.1841.8241.6441.4641.1240.7840.4340.0939.75
530
17.4121.38
0.981.762.473.053.634.214.795.375.956.537.057.568.088.599.119.58
10.0410.5110.9711.4411.8812.3212.7513.1913.6314.0314.4414.8415.2515.6516.0016.3516.7117.0617.4117.7918.0418.3318.4118.6319.0919.2819.6719.8920.0420.4421.3121.4321.5422.0422.1422.3122.6922.8123.9824.1224.2124.3624.4424.9825.0625.4425.5425.6125.7825.8125.8925.9826.0926.09
335
39
TABLE 11:Section D: Power Rating P(kW) for Arc of Contact 180°
700950
20406080
100120140160180200220240260280300320340360380400420440460480500520540560580600620640660680700720740760780800820840860880900920940960980
10001020104010601080110011201140116011801200
NRPM
Pitch diameter of the smaller pulley (mm)
560
38.6544.72
1.863.495.016.477.899.26
10.6111.9213.2014.4615.7016.9118.0919.2620.4121.5422.6423.7224.7825.8226.8427.8328.8029.7630.6831.5932.4833.3434.0034.9835.7636.5337.2637.9738.6539.3039.9340.5341.1041.6442.1642.6343.0843.5043.8944.2544.5644.8645.1145.3345.5245.6645.7845.8545.8945.9045.8545.7845.6545.50
Additional Power(Kw) per belt for
speed ratio
900
58.98
3.236.078.76
11.3413.8316.2518.6220.9223.1625.3527.4929.5731.5933.5635.4737.3239.1140.8542.5144.1145.6547.1148.5149.8451.0952.2653.3554.3755.2956.1356.8957.5558.1358.6058.9859.2559.4359.5059.5059.33
54.57
2.845.327.679.92
12.1114.2416.3118.3920.3022.2324.1225.9627.7629.5231.2332.9034.5136.0937.6139.0940.5341.9143.2344.5045.7346.8848.0049.0450.0250.9551.8952.5953.3353.9854.5755.0955.5355.9055.9056.41
800
51.85
2.644.957.129.22
11.2513.2215.1417.0118.8520.6422.4024.1225.8027.4429.0430.6132.1333.6235.0636.4737.8339.1440.4341.6542.8343.9645.0646.0847.0748.0148.8949.7150.4851.1951.8552.4452.9753.4553.8454.1954.4654.6654.8054.8654.86
750
49.43
2.484.646.688.64
10.5412.3914.2015.9617.6819.3621.0122.6324.2125.7627.2728.7530.2031.6132.9834.3135.6236.8838.0939.2840.4341.5342.5943.6144.5745.5146.3947.2248.0148.7449.4350.0650.6451.1851.6552.0752.4352.7352.9753.1553.28
710
46.8151.61
2.314.346.248.069.84
11.5613.2514.8916.5018.0719.6121.1322.6124.0625.4726.8628.2229.5530.8532.1133.3434.5535.7136.8337.9439.0040.0241.0041.9642.8743.7444.5745.3646.1146.8147.4748.0948.6649.1849.6550.0950.4650.7951.0651.2951.4651.5851.6351.6451.59
670
44.0149.48
2.154.025.807.499.14
10.7312.3013.8215.3116.7718.2019.6020.9822.3323.6624.9526.2227.4629.6829.8631.0232.0533.2534.3235.3636.3737.3638.3039.2240.1140.9541.7742.5543.2944.0144.6845.3145.9146.4546.9747.4547.8848.2748.6248.9249.1749.3849.5549.6749.7449.7649.7349.6449.5249.33
630
0.230.31
0.010.010.020.030.030.040.050.050.060.060.070.080.080.090.100.100.110.120.120.130.140.140.150.160.160.170.180.180.190.190.200.210.210.220.230.230.240.250.250.260.270.270.280.290.290.300.310.310.320.320.330.340.340.350.360.360.370.380.380.39
1.01to
1.05
1.141.54
0.030.060.100.130.160.190.230.260.290.320.360.390.420.450.490.520.550.580.620.650.680.710.750.780.810.840.880.910.940.971.011.041.071.101.141.171.201.231.271.301.331.361.401.431.461.491.531.561.591.621.661.691.721.751.791.821.851.881.921.95
1.06to
1.26
1.822.47
0.050.100.160.210.260.310.360.420.470.520.570.620.680.730.780.830.880.940.991.041.091.141.201.251.301.351.401.461.511.561.611.661.721.771.821.871.921.982.032.082.132.182.242.292.342.392.442.502.552.602.652.702.762.812.862.912.963.023.073.12
1.27to
1.57
2.052.78
0.060.120.180.230.290.350.410.470.530.580.640.700.760.820.880.940.991.051.111.171.231.291.341.401.461.521.581.641.691.751.811.871.931.992.052.102.162.222.282.342.402.452.512.572.632.692.752.812.862.922.983.043.103.163.213.273.333.393.453.51
For>
1.571000600
40.3545.72
1.993.985.556.938.329.71
11.0912.4813.8615.2516.5117.7719.0220.2821.5422.6823.8324.9726.1227.2628.2729.2730.2831.2832.2933.1634.0334.9035.7736.6437.3838.1238.8739.6140.3540.9341.5142.1042.6843.2643.6644.0644.4544.8545.2545.4645.6845.8946.1146.3246.3546.3946.4246.4646.4946.2646.0445.8145.5945.36
3.946.538.06
10.3512.6314.9217.0219.1221.2223.2025.1727.1528.9830.8132.6434.3336.0337.7239.4841.2442.9944.7546.5147.8649.2150.5651.9153.2654.1355.0055.8856.7557.62
40
41
TABLE 12:Section E: Power Rating P(kW) for Arc of Contact 180°
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
400
28.0331.56
1.552.854.055.186.287.328.339.32
10.2711.2012.1213.0013.8614.7115.5316.3317.1217.8918.6519.3720.0820.7821.4422.1022.7423.3623.9624.5425.0925.6326.1526.6527.1427.5928.0328.4428.8329.2029.5529.8830.1830.4630.7230.9431.1531.3331.4931.6231.7331.8031.8531.8731.8731.8431.7831.6931.5831.4331.2531.0430.8330.5330.2229.8929.52
700950
20406080
100120140160180200220240260280300320340360380400420440460480500520540560580600620640660680700720740760780800820840860880900920940960980
1000102010401060108011001120114011601180120012201240126012801300
NRPM
500
33.5937.41
1.823.364.796.147.448.709.92
11.1012.2513.3814.4815.5516.5917.6218.6119.5920.5421.4722.3823.2624.1224.9525.7726.5527.3228.0628.6429.4730.1430.7831.4031.9932.5533.0833.5934.0734.5234.9535.3435.7036.0336.3436.6036.8437.0537.2237.3537.4637.5237.5637.5637.5137.4437.3337.1736.9836.7636.4936.1835.8335.4435.1234.5234.1433.44
560
39.8143.40
2.143.965.667.278.83
10.3411.8013.2214.6015.9517.2718.5519.8121.0422.2423.4024.5525.6626.7427.7928.8229.8230.7831.7232.6233.4934.3335.1435.9136.6437.3538.0238.6639.2539.8140.3440.8241.2741.6742.0442.3642.6442.8843.0843.2343.3343.3943.4043.3643.2843.1442.9642.7342.4442.1141.7141.2740.7640.2139.59
630
46.4148.83
2.514.656.678.59
10.4312.2213.9615.6517.3018.9020.4722.0123.4924.9526.3727.7529.1130.4131.6832.9234.1235.2836.4037.4738.5139.5140.4541.3642.2243.0443.8144.5345.2145.8246.4146.9347.3947.8148.1748.4648.7148.9049.0349.0949.1049.0448.9248.7348.4748.1647.7647.3146.7846.1745.50
670
49.82
2.715.067.249.33
11.3413.2815.1817.0218.8220.5622.2723.9525.5727.1528.6930.1931.6533.0634.4435.7637.0638.3039.4940.6341.7342.7843.7844.7345.6246.4647.2447.9848.6549.2649.8250.3150.7451.1051.4051.6351.8051.9051.9251.8851.76
710
52.97
2.935.457.80
10.0612.2414.3416.4018.3820.3322.2224.0625.8627.6129.3230.9732.5834.1535.6737.1338.5539.9241.2242.4843.6944.8545.9446.9747.9448.8649.7050.5051.2151.8752.4552.9753.4053.7754.0654.2854.4254.4754.4554.3554.1653.87
750
55.83
3.135.838.37
10.8013.1315.4017.6019.7421.8323.8525.8327.7629.6331.4533.2234.9436.6038.2139.7741.2742.7144.0945.4046.6547.8448.9750.0251.0151.9352.7753.5454.2354.8455.3755.8356.2056.4856.6856.7856.79
800
59.00
3.396.329.07
11.7014.2516.7119.0921.4123.6825.8728.0230.1032.1234.0935.9937.8339.6141.3342.9844.5646.0847.5348.9050.2051.4252.5853.6454.6255.5156.3357.0557.6958.2258.6659.0059.2459.3859.4259.3559.17
860
61.69
3.656.819.77
12.6115.3518.0020.5723.0825.5127.8830.1832.4034.5836.6838.7040.6642.5544.3646.1047.7649.3450.8452.2653.5854.8255.9757.0257.9758.8259.5760.2260.7661.1861.5061.69
1.01to
1.05
0.380.52
0.010.020.030.040.050.070.080.090.100.110.120.130.140.150.160.180.190.200.210.220.230.240.250.260.270.280.300.310.320.330.340.350.360.370.380.390.410.420.430.440.450.460.470.480.490.500.510.530.540.550.560.570.580.590.600.610.620.640.650.660.670.680.690.700.71
1.06to
1.26
1.922.60
0.050.110.160.220.270.330.380.440.490.550.600.660.710.770.820.880.930.991.041.091.151.201.261.311.371.421.481.531.591.641.701.751.811.861.921.972.032.082.142.192.242.302.352.412.462.522.572.632.682.742.792.852.902.963.013.073.123.183.233.283.343.393.453.503.56
1.27to
1.57
3.074.16
0.090.180.260.350.440.530.610.700.790.880.961.051.141.231.311.401.491.581.661.751.841.932.022.102.192.282.372.452.542.632.722.802.892.983.073.153.243.333.423.503.593.683.773.863.944.034.124.214.294.384.474.564.644.734.824.914.995.085.175.265.345.435.525.615.70
For>
1.57
3.454.68
0.100.200.300.390.490.590.690.790.890.981.081.181.281.381.481.581.671.771.871.972.072.172.272.362.462.562.662.762.862.953.053.153.253.353.453.553.643.743.843.944.044.144.244.334.434.534.634.734.834.925.025.125.225.325.425.525.615.715.815.916.016.116.216.306.40
42
TABLE 12:Section E: Power Rating P(kW) for Arc of Contact 180°
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
900
63.88
3.907.28
10.4613.5216.4519.2922.0524.7327.3329.8532.3134.6836.9839.2141.3643.4345.4147.3149.1250.8552.4854.0155.4556.7858.0159.1460.1461.0561.8362.4963.0363.4463.7263.8763.88
700950
20406080
100120140160180200220240260280300320340360380400420440460480500520540560580600620640660680700
NRPM
950
65.54
4.167.76
11.1614.4117.5320.5623.5026.3529.1331.8134.4136.9339.3641.7043.9646.1348.2050.1752.0553.8255.4857.0358.4759.7961.2062.0763.0363.8464.5265.0665.4765.7165.8065.7565.54
1000
4.418.24
11.8415.3018.6221.8424.9527.9730.9033.7436.4939.1441.6944.1546.5048.7650.9152.9554.8756.6758.3559.9061.3362.6163.7764.7865.6466.3566.8967.28
1120
5.268.58
11.9015.2418.5721.9124.9628.0131.0633.8636.6539.4541.9744.4847.0049.2451.4853.7255.6757.6359.5861.1962.7964.4065.6466.8868.1268.9769.8370.68
1250
5.919.69
13.4717.2521.0324.8128.2431.6735.1038.2341.3544.4847.2550.0152.7855.2057.6360.0562.0564.0566.0567.6069.1470.6971.7672.8373.9074.4274.9575.47
1400
6.7110.9815.2419.5223.8128.0931.9535.8139.6743.1346.6050.0653.0756.0759.0861.6164.1566.6868.6770.6672.6574.0675.3576.7177.3978.0978.78
1600
7.7412.6717.5922.5127.4232.3436.7541.1645.5749.4153.2557.0960.3363.5666.8069.3671.9274.4876.2377.9879.7380.6181.4982.37
1.01to
1.05
0.380.52
0.010.020.030.040.050.070.080.090.100.110.120.130.140.150.160.180.190.200.210.220.230.240.250.260.270.280.300.310.320.330.340.350.360.370.38
1.06to
1.26
1.922.60
0.050.110.160.220.270.330.380.440.490.550.600.660.710.770.820.880.930.991.041.091.151.201.261.311.371.421.481.531.591.641.701.751.811.861.92
1.27to
1.57
3.074.16
0.090.180.260.350.440.530.610.700.790.880.961.051.141.231.311.401.491.581.661.751.841.932.022.102.192.282.372.452.542.632.722.802.892.983.07
For>
1.57
3.454.68
0.100.200.300.390.490.590.690.790.890.981.081.181.281.381.481.581.671.771.871.972.072.172.272.362.462.562.662.762.862.953.053.153.253.353.45
43
TABLE 13: Section SPZ/3V: Power Rating P(kW) for Arc of Contact 180°
700950
14502850
100200300400500600700800900950
100011001200130014001450150016001700180019002000210022002300240025002600270028002850290030003100320033003400350036003700380039004000410042004300440045004600470048004900500051005200530054005500560058006000620064006600680070007200740076007800800082008400
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
1.01to
1.05
0.010.010.020.04
0.000.000.000.010.010.010.010.010.010.010.010.020.020.020.020.020.020.020.020.030.030.030.030.030.030.030.040.040.040.040.040.040.040.040.050.050.050.050.050.050.050.060.060.060.060.060.060.060.060.070.070.070.070.070.070.080.080.080.080.080.090.090.090.100.100.100.110.110.110.110.110.120.14
0.060.090.130.26
0.010.020.030.040.050.060.060.070.080.090.090.100.110.120.130.130.140.150.160.170.180.190.190.190.210.220.230.240.250.260.260.270.280.290.300.310.310.320.330.340.350.360.370.380.390.400.410.420.420.440.440.450.460.470.480.490.500.510.520.540.560.590.610.630.650.670.690.700.720.740.760.780.79
1.06to
1.26
1.27to
1.57
0.090.120.190.37
0.010.030.040.050.070.080.090.110.120.120.130.140.160.170.180.190.200.210.220.240.250.260.280.280.300.320.330.340.350.360.370.380.390.410.420.430.450.460.470.490.500.510.530.540.550.570.580.590.590.620.630.640.660.670.680.700.710.720.740.760.790.840.870.890.920.950.971.001.031.051.081.101.13
For>
1.57
0.110.150.230.46
0.020.030.050.060.080.100.110.130.150.150.160.180.190.210.230.230.240.260.270.290.310.320.340.340.370.390.400.420.440.450.460.470.480.500.520.530.550.560.580.600.610.630.640.660.680.690.710.730.730.760.770.790.810.820.840.850.870.890.900.930.971.031.061.101.131.161.191.221.261.291.321.351.38
63 71 95 10080 85 90
0.490.610.851.37
0.100.170.240.290.340.440.490.540.590.610.630.710.750.790.830.850.870.930.971.001.031.071.131.161.191.221.241.311.341.361.371.381.411.451.471.491.511.521.581.601.611.621.631.681.691.701.711.711.761.761.771.771.771.811.811.811.821.821.841.841.841.841.831.811.771.741.741.681.661.591.571.481.39
0.881.121.592.73
0.160.290.400.500.600.780.880.981.081.121.171.291.381.471.551.591.631.761.841.922.002.072.182.252.322.392.462.572.632.702.732.762.812.912.973.023.073.123.223.273.313.353.393.493.533.563.593.623.713.743.763.783.803.893.913.923.933.934.034.034.034.084.104.144.094.094.064.024.023.913.913.783.63
0.680.851.202.01
0.130.230.320.400.470.600.680.750.820.850.880.981.051.111.171.201.231.321.381.431.491.541.631.681.731.781.821.901.941.992.012.032.072.152.192.222.262.292.362.392.422.452.472.552.572.602.612.632.702.722.732.742.752.822.832.832.842.842.902.902.912.922.932.962.922.922.912.852.852.772.762.662.55
0.991.261.813.11
0.180.320.450.570.680.870.991.101.201.261.311.461.561.661.761.811.852.002.092.182.272.362.482.562.642.722.802.933.003.083.113.153.213.333.393.463.523.573.683.733.783.833.884.004.044.084.124.154.264.294.324.344.364.474.494.504.514.524.624.624.704.714.734.744.704.704.694.604.604.474.464.304.13
1.101.412.023.48
0.200.360.510.640.770.971.101.231.351.411.471.631.751.861.972.022.082.232.342.442.542.632.732.822.913.003.083.283.363.453.483.523.603.743.813.883.954.014.144.204.264.314.364.494.544.584.624.664.734.764.794.824.845.025.045.055.075.075.185.185.275.245.245.245.235.235.235.115.114.964.944.754.54
1.221.562.243.87
0.220.400.560.710.861.071.221.361.491.561.621.801.932.062.182.242.302.472.592.702.812.923.083.193.293.393.493.643.733.823.873.914.004.144.224.304.374.444.594.664.724.784.844.975.025.075.115.165.305.345.375.405.425.555.575.585.665.675.725.725.805.805.815.825.765.765.635.605.565.385.345.114.86
1.321.692.454.24
0.240.440.620.790.951.161.321.471.621.691.771.972.112.252.392.452.522.702.832.963.083.203.373.493.603.713.823.994.094.194.244.294.384.544.634.714.794.875.035.105.175.245.305.455.515.565.605.655.795.835.865.896.016.036.056.106.116.116.236.236.236.326.306.306.216.216.066.055.855.825.675.405.10
44
TABLE 13: Section SPZ/3V: Power Rating P(kW) for Arc of Contact 180°
700950
14502850
100200300400500600700800900950
1000110012001300140014501500160017001800190020002100220023002400250026002700280028502900300031003200330034003500360037003800390040004100420043004400450046004700480049005000510052005300540055005600580060006200640066006800700072007400760078008000
NRPM
Pitch diameter of the smaller pulley (mm)
125112
Additional Power(Kw) per belt for
speed ratio
132 140 180 2001.01to
1.05
0.010.010.020.04
0.000.000.000.010.010.010.010.010.010.010.010.020.020.020.020.020.020.020.020.030.030.030.030.030.030.030.040.040.040.040.040.040.040.040.050.050.050.050.050.050.050.060.060.060.060.060.060.060.060.070.070.070.070.070.070.080.080.080.080.080.090.090.090.100.100.100.110.110.110.110.11
1.06to
1.26
0.060.090.130.26
0.010.020.030.040.050.060.060.070.080.090.090.100.110.120.130.130.140.150.160.170.180.190.190.190.210.220.230.240.250.260.260.270.280.290.300.310.310.320.330.340.350.360.370.380.390.400.410.420.420.440.440.450.460.470.480.490.500.510.520.540.560.590.610.620.620.670.690.700.720.740.76
1601.27to
1.57
0.090.120.190.37
0.010.030.040.050.070.080.090.110.120.120.130.140.160.170.180.190.200.210.220.240.250.260.280.280.300.320.330.340.350.360.370.380.390.410.420.430.450.460.470.490.500.510.530.540.550.570.580.590.590.620.630.640.660.670.680.700.710.720.740.760.790.840.870.890.920.950.971.001.031.051.08
For>
1.57
0.110.150.230.46
0.020.030.050.060.080.100.110.130.150.150.160.180.190.210.230.230.240.260.270.290.310.320.340.340.370.390.400.420.440.450.460.470.480.500.520.530.550.560.580.600.610.630.640.660.680.690.710.730.730.760.770.790.810.820.840.850.870.890.900.930.971.031.061.101.131.161.191.221.261.291.32
150
1.582.042.965.11
0.280.510.720.921.121.391.581.771.952.042.132.372.542.712.882.963.043.263.423.573.723.874.074.214.354.484.614.814.935.055.115.175.285.475.575.675.775.866.046.126.206.276.346.536.596.646.696.736.916.946.976.997.017.187.197.197.227.257.337.337.367.337.317.257.067.056.926.766.586.376.00
2.022.613.786.48
0.350.640.911.171.411.772.022.262.492.612.723.023.243.463.673.783.884.164.364.564.744.935.205.385.555.715.876.126.276.416.486.556.686.937.057.167.277.377.617.707.787.857.918.158.208.248.288.308.538.548.548.548.718.718.738.758.778.768.758.718.628.378.35
1.872.413.496.01
0.330.610.861.101.331.641.872.092.312.412.522.793.003.203.393.493.583.854.044.224.394.564.814.985.135.295.445.675.815.956.016.086.206.436.556.666.766.867.087.177.257.327.517.577.637.787.827.868.008.028.048.168.168.208.248.248.268.308.308.328.268.078.077.817.787.437.04
2.413.114.507.65
0.420.771.101.421.722.112.412.702.983.113.253.603.874.134.384.504.624.955.195.425.645.856.176.376.576.766.947.257.427.587.657.737.878.168.298.408.518.608.888.969.129.189.239.419.449.559.559.559.709.709.719.719.739.759.669.669.669.539.539.19
2.613.384.908.25
0.450.831.181.521.842.292.612.933.233.383.533.924.214.494.764.905.035.395.655.896.136.366.706.927.127.327.517.848.018.188.258.338.478.798.919.039.139.219.529.599.649.689.71
10.0110.0210.1310.1510.2010.2310.2310.2210.2210.1610.1510.019.859.68
3.043.935.669.39
0.520.961.371.762.142.663.043.403.753.934.104.544.875.205.515.665.816.236.526.807.067.317.727.968.188.398.598.979.159.319.399.469.599.96
10.0710.1610.2410.3010.6510.6810.8310.8310.8511.0011.0111.0311.0211.0010.9710.8510.8510.6510.43
3.454.456.41
10.52
0.591.091.562.012.433.023.453.864.264.454.655.165.535.906.256.416.587.057.377.677.968.238.688.939.269.489.68
10.0110.1810.4510.5210.5910.7010.9911.0711.2711.3111.3211.5611.5611.6711.6711.6811.6811.5311.3611.3011.29
2.192.834.107.01
0.380.700.991.271.541.922.192.452.712.832.953.283.523.763.994.104.214.524.744.955.155.355.645.836.016.196.366.636.796.947.017.087.227.497.617.737.847.948.208.298.368.438.498.738.778.818.978.999.099.099.179.179.189.189.189.219.229.169.169.078.938.768.37
45
TABLE 14: Section SPA: Power Rating P(kW) for Arc of Contact 180°
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratioNRPM
700950
14502850
100200300400500600700800900950
100011001200130014001450150016001700180019002000210022002300240025002600270028002850290030003100320033003400350036003700380039004000410042004300440045004600470048004900500051005200530054005500560057005800590060006100620063006400650066006700680069007000
90
1.171.452.013.13
0.230.400.540.750.891.011.171.291.401.451.551.651.751.881.972.012.062.192.272.352.462.532.602.702.762.812.922.973.013.113.133.153.183.263.293.313.393.403.413.493.493.493.553.563.573.583.553.523.523.523.503.453.453.413.413.383.353.333.243.163.153.072.972.962.942.902.712.572.522.422.262.092.07
100
1.551.952.744.39
0.300.530.730.971.151.331.551.711.871.952.062.212.352.542.672.742.802.973.093.213.373.483.583.743.843.924.074.154.234.364.394.434.494.614.664.714.834.874.905.015.035.045.145.145.145.235.235.245.275.285.295.295.215.145.115.105.055.025.004.904.894.814.794.704.564.524.424.254.074.073.873.673.66
112
1.992.523.585.87
0.370.660.921.241.491.721.992.212.422.522.632.833.013.313.493.583.673.914.084.244.454.604.754.955.085.215.415.535.645.825.875.926.016.186.266.336.496.556.606.746.786.806.946.956.957.007.027.047.067.067.087.087.097.097.107.006.906.896.836.706.706.596.426.406.276.076.045.875.635.625.365.085.07
118
2.212.814.016.59
0.400.721.001.371.641.902.212.462.692.812.983.213.423.703.914.014.114.374.564.744.985.155.325.555.705.856.076.206.336.536.596.646.746.947.037.117.297.367.417.577.617.647.797.807.807.957.957.958.038.038.048.057.957.867.857.847.797.797.647.487.487.367.167.166.976.756.756.496.216.215.915.595.56
125
2.473.154.507.40
0.450.811.141.521.832.122.472.753.023.153.343.603.854.154.394.504.614.905.125.325.605.805.986.246.416.586.826.977.117.347.407.477.587.807.907.998.198.268.328.518.558.588.758.768.768.858.898.958.998.998.988.978.878.768.758.728.578.558.378.178.158.127.957.927.657.377.377.076.736.726.365.975.94
132
2.723.484.988.21
0.490.891.251.672.012.332.723.033.333.483.693.984.254.594.854.985.115.435.675.906.206.426.626.927.117.307.567.737.888.148.218.288.408.648.758.849.079.149.219.419.459.489.669.669.779.829.859.869.889.909.899.889.859.809.759.689.559.419.198.968.908.748.558.498.177.837.707.46
140
3.013.855.539.11
0.540.981.381.852.232.593.013.363.693.854.094.414.725.095.385.535.676.026.296.556.897.137.367.687.898.098.398.578.749.039.119.189.319.589.699.79
10.0310.1010.1610.3910.4210.4410.5410.6010.6110.7910.7910.8010.8210.8110.8010.7210.5610.4910.3910.2810.0510.009.869.579.559.298.948.908.608.188.147.68
1.01to
1.05
0.020.030.050.09
0.000.010.010.010.020.020.020.030.030.030.030.040.040.040.050.050.050.050.060.060.060.070.070.070.080.080.080.090.090.090.090.100.100.100.110.110.110.120.120.120.130.130.130.140.140.140.150.150.150.160.160.160.170.170.170.180.180.180.190.190.190.200.200.200.210.210.210.220.220.220.230.230.23
1.06to
1.26
0.150.200.310.61
0.020.040.060.090.110.130.150.170.190.200.220.240.260.280.300.310.320.340.370.390.410.430.450.470.490.520.540.560.580.600.610.620.650.670.690.710.730.750.770.800.820.840.860.880.900.930.950.970.991.011.031.051.081.101.121.141.161.181.211.231.251.271.291.311.331.361.381.401.421.441.461.481.51
1.27to
1.57
0.210.290.440.87
0.030.060.090.120.150.180.210.240.270.290.310.340.370.400.430.440.460.490.520.550.580.610.640.670.700.730.760.790.820.860.870.890.920.950.981.011.041.071.101.131.161.191.221.251.281.311.341.371.411.441.471.501.531.561.591.621.651.681.711.741.771.801.831.861.891.921.961.992.022.052.082.112.14
For>
1.57
0.260.360.541.07
0.040.070.110.150.190.220.260.300.340.360.370.410.450.490.520.540.560.600.640.670.710.750.790.820.860.900.940.971.011.051.071.091.121.161.201.241.271.311.351.391.421.461.501.541.571.611.651.691.721.761.801.841.871.911.951.992.022.062.102.132.172.212.252.282.322.362.402.432.472.512.552.582.62
150
3.374.326.20
10.19
0.601.091.552.062.492.893.373.764.144.324.584.945.295.716.046.206.366.767.067.357.738.008.268.618.859.079.419.619.79
10.1110.1910.2710.4110.7010.8210.9111.1811.2511.3011.5511.5711.5711.6511.7011.7011.8911.8011.7511.7111.7111.7111.6711.4611.2211.1011.0410.7410.6010.4610.0910.009.709.25
46
TABLE 14:Section SPA: Power Rating P(kW) for Arc of Contact 180°
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
700950
14502850
100200300400500600700800900950
10001100120013001400145015001600170018001900200021002200230024002500260027002800285029003000310032003300340035003600370038003900400041004200430044004500460047004800490050005100520053005400550056005700580059006000
224
5.977.67
10.9316.10
1.031.902.713.634.405.145.976.677.347.678.128.759.36
10.1010.6610.9311.2011.8912.3712.8313.4713.8714.2314.8115.1115.3615.9016.0916.0916.1016.1016.1116.1117.2017.2517.3017.3517.1416.8716.8016.7816.3616.30
250
6.858.79
12.4718.30
1.182.183.114.165.045.896.857.658.428.799.32
10.0410.7211.5512.1712.4712.7613.5414.0614.5415.7516.1816.5516.6516.9217.1317.7017.8217.8718.2018.3018.4018.5018.6018.3718.0618.0017.95
280
7.8610.0614.1719.67
1.352.503.574.785.796.767.868.779.64
10.0610.6611.4612.2213.1713.8514.1714.4815.3415.8816.3517.1417.5117.8218.5218.7118.8219.4119.5519.6519.7819.6719.5319.19
315
9.0111.4916.0120.41
1.552.874.105.496.657.769.01
10.0411.0211.4912.1813.0713.9014.9615.6816.0116.3317.2917.8118.2619.1019.4019.6020.3220.3620.5020.8720.6220.6020.5820.4120.10
1.01to
1.05
0.020.030.050.09
0.000.010.010.010.020.020.020.030.030.030.030.040.040.040.050.050.050.050.060.060.060.070.070.070.080.080.080.090.090.090.090.100.100.100.110.110.110.120.120.120.130.130.130.140.140.140.150.150.150.160.160.160.170.170.170.180.180.180.190.190.190.200.20
1.06to
1.26
0.150.200.310.61
0.020.040.060.090.110.130.150.170.190.200.220.240.260.280.300.310.320.340.370.390.410.430.450.470.490.520.540.560.580.600.610.620.650.670.690.710.730.750.770.800.820.840.860.880.900.930.950.970.991.011.031.051.081.101.121.141.161.181.211.231.251.271.29
1.27to
1.57
0.210.290.440.87
0.030.060.090.120.150.180.210.240.270.290.310.340.370.400.430.440.460.490.520.550.580.610.640.670.700.730.760.790.820.860.870.890.920.950.981.011.041.071.101.131.161.191.221.251.281.311.341.371.411.441.471.501.531.561.591.621.651.681.711.741.771.801.83
For>
1.57
0.260.360.541.07
0.040.070.110.150.190.220.260.300.340.360.370.410.450.490.520.540.560.600.640.670.710.750.790.820.860.900.940.971.011.051.071.091.121.161.201.241.271.311.351.391.421.461.501.541.571.611.651.691.721.761.801.841.871.911.951.992.022.062.102.132.172.212.25
160
3.734.796.88
11.22
0.651.191.682.282.753.213.734.164.584.795.075.475.866.336.706.887.057.497.828.148.568.869.149.539.79
10.0210.3910.6010.7911.1411.2211.3011.4511.7711.8811.9712.2612.3212.3512.6212.6212.7012.8212.8312.8412.8612.7312.5712.5712.5312.2912.2512.1511.8411.7011.5611.1711.00
180
4.445.718.19
13.17
0.771.412.002.703.273.814.444.965.465.716.046.526.987.547.988.198.398.919.309.67
10.1710.5110.8311.2911.5711.8412.2612.4812.6813.0913.1713.2513.3813.7413.8313.8914.2114.2214.3014.4014.4514.5014.5514.3914.3814.3714.2513.8413.8013.6313.4013.3312.87
200
5.146.619.46
14.92
0.891.642.333.123.784.415.145.746.336.617.007.558.088.729.229.469.69
10.2910.7311.1411.7112.0812.4312.9513.2513.5214.0014.2214.4114.8514.9214.9815.0815.4715.5115.6015.7015.8015.9015.9515.7715.6015.5515.4815.4015.3014.8714.39
47
TABLE 15:Section SPB/5V: Power Rating P(kW) for Arc of Contact 180°
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
700950
14502850
100200300400500600700800900950
100011001200130014001450150016001700180019002000210022002300240025002600270028002850290030003100320033003400350036003700380039004000410042004300440045004600470048004900500051005200530054005500
140
3.434.366.079.03
0.661.161.712.152.553.053.433.854.204.364.524.955.255.545.946.076.206.546.787.087.297.487.817.978.228.418.588.748.829.019.039.059.079.309.329.339.359.409.459.429.389.219.139.028.898.868.578.308.257.937.827.396.936.926.926.915.795.18
160
4.625.848.22
12.49
0.851.522.122.873.443.974.625.125.605.846.206.657.087.638.038.228.408.929.269.58
10.0510.3310.5911.0311.2411.4311.8311.9712.0912.4512.4912.5212.5512.6512.7512.7912.8012.8212.8213.0412.8412.7712.5912.4612.2312.1111.8111.4211.3510.8910.3110.319.658.948.898.107.267.14
180
5.777.33
10.3515.64
1.041.882.643.564.284.965.776.417.037.337.788.368.919.60
10.1110.3510.5911.2311.6612.0712.6713.0213.3413.8914.1514.3814.8815.0515.1715.6115.6415.6715.6815.7215.7415.8415.9016.0516.0616.0815.7615.5815.3915.1214.7114.6014.0913.4513.4112.6712.3811.7810.82
190
6.348.06
11.4017.11
1.142.072.913.914.715.466.347.057.738.068.569.209.80
10.5711.1311.4011.6612.3612.8313.2713.9314.3114.6515.2615.5415.7716.3216.4816.6017.0817.1117.1217.2017.3017.4017.5017.6317.3917.3617.3616.9616.7516.6816.1116.0015.5814.8314.60
1.01to
1.05
0.050.070.110.21
0.010.010.020.030.040.040.050.060.070.070.070.080.090.100.100.110.110.120.120.130.140.150.150.160.170.180.180.190.200.210.210.210.220.230.230.240.250.260.260.270.280.290.290.300.310.320.320.330.340.340.350.360.370.370.380.390.400.40
0.330.450.691.35
0.050.090.140.190.240.280.330.380.430.450.470.520.570.620.660.690.710.760.810.850.900.950.991.041.091.141.181.231.281.331.351.371.421.471.521.561.611.661.711.751.801.851.891.941.992.042.082.132.182.232.272.322.372.422.462.512.562.61
1.06to
1.26
1.27to
1.57
0.470.640.971.92
0.070.130.200.270.340.400.470.540.610.640.670.740.810.870.940.971.011.081.141.211.281.341.411.481.551.611.681.751.821.881.921.952.022.082.152.222.292.352.422.492.552.622.692.762.822.892.963.033.093.163.233.293.363.433.503.563.633.70
For>
1.57
0.580.781.202.35
0.080.160.250.330.410.490.580.660.740.780.820.910.991.071.151.201.241.321.401.481.571.651.731.811.901.982.062.142.232.312.352.392.472.562.642.722.802.892.973.053.133.213.303.383.463.543.633.713.793.873.964.044.124.204.294.374.454.53
150
4.005.137.13
10.79
0.761.351.972.482.963.554.004.514.935.135.325.836.206.636.977.137.297.738.028.408.668.899.289.489.799.95
10.0910.4210.5210.7610.7910.8210.8511.1211.1311.1411.1811.2711.3311.2511.1911.0511.0010.9710.6910.6510.309.999.929.559.418.908.358.337.717.466.776.03
200
6.918.79
12.4218.49
1.232.233.154.255.125.956.917.698.438.799.33
10.0310.6911.5212.1312.4212.7013.4813.9914.4715.1815.5915.9516.5916.8817.1217.7017.8617.9618.4818.4918.4918.7918.8818.9318.9318.8918.5818.5018.4717.9717.6717.5816.8916.7116.1915.2914.30
212
7.599.67
13.6320.10
1.352.463.484.665.626.537.598.459.279.67
10.2511.0211.7412.6513.3113.6313.9414.7915.3415.8516.6317.0617.4418.1418.4318.6619.2919.4319.5020.0520.1020.1520.2020.3720.3020.2520.2220.0619.8419.5718.9418.8318.36
48
TABLE 15:Section SPB/5V: Power Rating P(kW) for Arc of Contact 180°
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratioNRPM
700950
14502850
100200300400500600700800900950
100011001200130014001450150016001700180019002000210022002300240025002600270028002850290030003100320033003400350036003700380039004000
250
9.7012.3517.3324.06
1.703.124.425.947.178.359.70
10.8011.8512.3513.1014.0714.9816.1316.9517.3317.7018.7619.4019.9820.9421.3921.7622.6122.8422.9923.7223.7223.8523.9924.0624.0824.1323.9823.4023.3023.0122.11
280
11.3314.4120.0926.20
1.983.645.176.938.379.75
11.3312.6113.8214.4115.2816.3917.4218.7619.6720.0920.4921.6922.3622.9424.0224.4324.7325.6525.7626.3126.5026.5526.6026.4926.2026.0025.96
355
15.3019.2926.22
2.664.916.999.38
11.3313.1815.3016.9818.5519.2920.4721.8423.0724.7925.7826.2226.6228.1128.6629.6830.2530.2830.9431.0530.9830.7430.31
375
16.3320.5327.66
2.845.257.47
10.0312.1114.0816.3318.1119.7620.5321.7923.2124.4726.2627.2427.6628.0329.5830.0431.0431.5331.8431.9631.9031.6331.16
400
17.5922.0229.35
3.075.688.09
10.8213.0615.1617.5919.4821.2122.0223.3924.8526.1328.0228.9629.3530.3531.2631.5732.5332.8632.9932.8932.57
0.050.070.110.21
0.010.010.020.030.040.040.050.060.070.070.070.080.090.100.100.110.110.120.120.130.140.150.150.160.170.180.180.190.200.210.210.210.220.230.230.240.250.260.260.270.280.290.29
1.01to
1.05
0.330.450.691.35
0.050.090.140.190.240.280.330.380.430.450.470.520.570.620.660.690.710.760.810.850.900.950.991.041.091.141.181.231.281.331.351.371.421.471.521.561.611.661.711.751.801.851.89
1.06to
1.26
0.470.640.971.92
0.070.130.200.270.340.400.470.540.610.640.670.740.810.870.940.971.011.081.141.211.281.341.411.481.551.611.681.751.821.881.921.952.022.082.152.222.292.352.422.492.552.622.69
1.27to
1.57
0.580.781.202.35
0.080.160.250.330.410.490.580.660.740.780.820.910.991.071.151.201.241.321.401.481.571.651.731.811.901.982.062.142.232.312.352.392.472.562.642.722.802.892.973.053.133.213.30
For>
1.57224
8.2610.5214.8321.57
1.462.673.775.066.107.108.269.20
10.0910.5211.1611.9912.7813.7714.4914.8315.1616.0716.6617.1918.0418.4818.8719.6219.9020.1220.7920.8920.9321.5021.5721.6021.6521.7021.6521.4521.3520.8120.7820.4019.6019.4118.81
236
8.9211.3616.0022.85
1.572.874.075.476.607.688.929.93
10.9011.3612.0612.9613.8014.8715.6316.0016.3517.3317.9518.5119.4019.8520.2421.0421.3121.5022.2022.2622.6022.8222.8522.9022.9122.8522.6522.5222.2521.55
315
13.2116.7423.0927.41
2.304.246.038.089.76
11.3613.2114.6916.0816.7417.7518.9920.1421.6722.6423.0923.5024.8625.5126.0327.2027.4828.2428.5828.7028.9128.8828.7128.4127.9627.4126.82
TABLE 16:Section 19: Power Rating P(kW) for Arc of Contact 180°
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
0.090.130.190.38
0.010.010.020.030.030.040.050.050.060.070.070.080.090.090.100.110.110.120.130.130.140.150.150.160.170.170.180.190.190.200.210.210.220.230.230.240.250.250.260.270.270.280.290.290.300.310.310.320.330.330.340.350.350.360.370.370.380.390.390.400.410.430.440.450.470.480.490.510.520.53
1.01to
1.05
0.600.821.252.45
0.040.090.130.170.210.260.300.340.390.430.470.520.560.600.640.690.730.770.820.860.900.950.991.031.071.121.161.201.251.291.331.381.421.461.501.551.591.631.681.721.761.811.851.891.931.982.022.062.112.152.192.232.282.322.362.412.452.492.542.582.662.752.842.923.013.093.183.273.353.44
0.851.161.773.48
0.060.120.180.240.310.370.430.490.550.610.670.730.790.850.920.981.041.101.161.221.281.341.401.461.531.591.651.711.771.831.891.952.012.072.142.202.262.322.382.442.502.562.622.682.752.812.872.932.993.053.113.173.233.293.363.423.483.543.603.663.783.904.034.154.274.394.514.644.764.88
1.06to
1.26
1.27to
1.57
1.051.422.174.26
0.070.150.220.300.370.450.520.600.670.750.820.900.971.051.121.201.271.351.421.501.571.651.721.801.871.942.022.092.172.242.322.392.472.542.622.692.772.842.922.993.073.143.223.293.373.443.523.593.673.743.813.893.964.044.114.194.264.344.414.494.644.794.945.095.245.395.535.685.835.98
For>
1.57
700950
14502850
50100150200250300350400450500550600650700750800850900950
100010501100115012001250130013501400145015001550160016501700175018001850190019502000205021002150220022502300235024002450250025502600265027002750280028502900295030003100320033003400350036003700380039004000
224
10.0312.9617.8722.36
0.921.742.523.284.024.745.446.136.817.488.138.779.41
10.0310.6411.2311.8212.4012.9613.5114.0514.5715.0915.5816.0716.5417.0017.4517.8718.2918.6919.0719.4319.7820.1220.4320.7321.0121.2721.5121.7421.9422.1222.2922.4322.5522.6522.7322.7822.8122.8222.8122.7722.7022.6222.5022.3622.2022.0121.7921.2720.6419.8919.0218.0316.9115.6714.2912.7811.12
250
12.1515.7021.5625.39
1.102.093.033.954.845.716.577.418.249.059.84
10.6311.3912.1512.8913.6114.3215.0215.7016.3617.0117.6418.2618.8519.4319.9920.5321.0621.5622.0422.5022.9423.3623.7524.1324.4824.8025.1025.3825.6325.8526.0526.2126.3626.4726.5526.6126.6326.6226.5826.5126.4126.2826.1125.9025.6725.3925.0824.7424.3523.4722.4421.2419.8918.3616.6514.77
315
17.3122.2729.9326.21
1.542.954.295.606.888.139.36
10.5711.7512.9114.0415.1616.2517.3118.3619.3820.3721.3322.2723.1824.0624.9125.7326.5227.2727.9928.6729.3229.9330.5031.0331.5231.9632.3733.0533.3133.5433.7133.8333.9033.9233.8933.8033.6633.4633.2032.8832.5032.0731.5631.0030.3729.6728.9128.0827.1826.2125.1624.0421.5818.82
355
20.3926.1034.4023.53
1.813.475.066.618.129.60
11.0512.4813.8715.2316.5717.8719.1520.3921.6122.7823.9325.0326.1027.1328.1229.0729.9730.8331.6532.4133.1333.7934.4034.9635.4635.9036.2936.6136.8837.0737.2137.2737.2737.2037.0536.8336.5336.1635.7135.1834.5633.8633.0832.2131.2530.2029.0627.8226.4925.0623.5321.9020.1618.33
375
21.9027.9536.43
1.953.735.457.118.74
10.3311.8913.4214.9216.3817.8119.2120.5821.9023.1924.4525.6626.8327.9529.0330.0631.0531.9832.8733.6934.4635.1835.8336.4336.9637.4237.8238.1438.4038.5838.6938.7238.6838.5538.3438.0437.6637.1936.6335.9735.2234.3833.4332.3931.24
400
23.7630.2038.74
2.124.065.927.749.51
11.2412.9414.6016.2217.8119.3620.8722.3323.7625.1426.4827.7729.0130.2031.3332.4133.4334.3935.2836.1136.8837.5738.1938.7439.2139.6139.9240.1540.2940.3540.3140.1839.9639.6439.2238.7038.0737.3336.4935.5334.6633.2731.9630.5328.98
180
6.378.19
11.2614.70
0.611.151.652.142.613.063.513.944.374.785.195.595.986.376.757.127.487.848.198.538.869.199.519.82
10.1210.4210.7110.9911.2611.5211.7712.0212.2512.4812.6912.9013.1013.2813.4613.6313.7813.9314.0714.1914.3014.4014.4914.5714.6314.6914.7314.7614.7714.7714.7614.7414.7014.6514.5814.5014.2914.0313.7013.3112.8612.3411.7511.0910.369.50
200
8.0410.3814.3218.55
0.751.422.052.663.253.834.394.945.486.016.537.057.558.048.539.009.479.93
10.3810.8211.2511.6712.0812.4812.8713.2513.6213.9714.3214.6614.9815.3015.6015.8916.1616.4316.6816.9117.1417.3517.5417.7317.8918.0518.1818.3118.4118.5018.5818.6318.6718.7018.7118.6918.6618.6218.5518.4718.3618.2417.9317.5517.0816.5215.8815.1414.3213.3912.3711.25
236
11.0114.2319.6023.91
1.001.902.763.594.405.195.966.727.478.208.929.63
10.3311.0111.6812.3412.9813.6114.2314.8315.4216.0016.5617.1117.6418.1518.6519.1319.6020.0420.4720.8821.2821.6522.0022.3422.6522.9423.2223.4623.6923.9024.0824.2324.3724.4824.5624.6224.6524.6624.6324.5824.5124.4024.2724.1023.9123.6923.4323.1522.4821.6820.7419.6718.4517.0915.5813.9112.0810.09
280
14.5618.7825.5827.31
1.302.493.624.725.796.847.868.879.87
10.8411.8012.7313.6514.5615.4416.3117.1517.9818.7819.5720.3321.0721.7922.4823.1523.8024.4225.0125.5826.1226.6327.1127.5627.9828.3628.7229.0429.3329.5929.8029.9930.1330.2430.3130.3430.3230.2730.1830.0429.8629.6429.3729.0528.6928.2827.8227.3126.7526.1425.4824.0022.3120.3918.2415.85
450
27.3734.4642.61
2.454.706.878.98
11.0313.0415.0016.9218.7920.6122.3824.1025.7727.3728.9230.4131.8333.1834.4635.6636.7937.8338.7939.6740.4541.1441.7342.2242.6142.8943.0543.1143.0542.8642.5542.1241.5540.8540.0139.0337.9036.6335.2033.6231.88
500
30.8438.3845.36
2.795.357.81
10.2112.5414.8217.0419.2121.3123.3525.3327.2429.0830.8432.5334.1335.6437.0638.3839.6140.7341.7442.6343.4144.0644.5944.9845.2445.3645.3345.1544.8144.3243.6642.8341.8240.6439.2737.7235.97
560
31.4938.6443.39
2.835.407.86
10.4512.7415.0317.1919.3421.5923.8326.0828.3229.9031.4933.0734.6535.9837.3138.6439.9841.3142.6443.9745.3044.9244.5444.1543.7743.3943.0142.6242.24
630
34.1140.51
2.895.457.90
12.0014.6017.2019.6022.0024.1326.2528.3830.5032.3134.1135.9237.7238.6539.5840.5141.4442.3743.3044.2345.16
49
TABLE 17:Section SPC: Power Rating P(kW) for Arc of Contact 180°
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratioNRPM
700950
14502850
50100200300350400450500550600650700750800850900950
100010501100115012001250130013501400145015001550160016501700175018001850190019502000205021002150220022502300235024002450250025502600265027002750280028502900295030003050310031503200325033003350340034503500
280
15.9820.5027.3529.58
1.582.885.197.818.889.91
11.1112.1013.0514.1915.1015.9817.0617.9018.7019.7420.5021.2322.2022.8823.5224.4425.0325.5726.4126.9027.3528.2028.5828.9329.6829.9530.1830.8831.0331.4031.7731.8032.0032.3432.4032.5032.5632.5832.5032.4132.2032.1031.8831.3131.3030.9430.2030.0829.5828.6628.4227.7726.6626.3025.4924.1923.69
300
17.9523.0130.63
1.753.205.788.759.95
11.1212.4613.5714.6515.9316.9617.9519.1620.1021.0122.1623.0123.8224.9125.6626.3727.4128.0528.6529.6230.1530.6331.5331.9332.2833.1133.3833.5934.3534.4734.5335.6035.6235.6535.6935.7235.7335.7535.6535.5435.3634.9034.8434.5033.7433.6533.1432.17
315
19.4124.8732.97
1.893.466.289.44
10.7412.0013.4714.6815.8517.2218.3319.4120.7221.7422.7123.9624.8725.7426.9227.7228.4729.5830.2630.8931.9332.4832.9733.9334.3334.6835.5635.8135.9936.8036.8836.9037.6137.7937.9137.9737.9937.9537.8537.6037.4937.2236.5136.5036.0535.1234.4034.3033.59
0.140.190.290.57
0.010.020.040.060.070.080.090.100.110.120.130.140.150.160.170.180.190.200.210.220.230.240.250.260.270.280.290.300.310.320.330.340.350.360.370.380.390.400.410.420.430.440.450.460.470.480.490.500.510.520.530.540.550.560.570.580.590.600.610.620.630.640.650.660.670.680.690.70
1.01to
1.05
0.901.221.863.67
0.060.130.260.390.450.510.580.640.710.770.840.900.961.031.091.161.221.291.351.411.481.541.611.671.741.801.861.931.992.062.122.192.252.312.382.442.512.572.642.702.772.832.892.963.023.093.153.223.283.343.413.473.543.603.673.733.793.863.923.994.054.124.184.244.314.374.444.50
1.06to
1.26
1.281.732.655.20
0.090.180.370.550.640.730.820.911.001.101.191.281.371.461.551.641.731.831.922.012.102.192.282.372.462.562.652.742.832.923.013.103.193.293.383.473.563.653.743.833.924.024.114.204.294.384.474.564.664.754.844.935.025.115.205.295.395.485.575.665.755.845.936.026.126.216.306.39
1.27to
1.57
1.572.133.256.38
0.110.220.450.670.780.901.011.121.231.341.451.571.681.791.902.012.132.242.352.462.572.692.802.913.023.133.253.363.473.583.693.803.924.034.144.254.364.484.594.704.814.925.045.155.265.375.485.605.715.825.936.046.166.276.386.496.606.706.836.947.057.167.277.397.507.617.727.80
For>
1.57224
10.3513.2217.6320.63
1.081.943.425.165.846.497.287.908.509.239.80
10.3511.0511.5712.0812.7413.2213.6714.3014.7315.1315.7216.0916.4517.0117.3317.6318.1618.4218.6619.1619.3619.5419.9920.1320.2420.6620.7320.7721.2021.3021.4021.4621.4921.5321.5721.5621.5321.4821.2321.2021.1720.8320.7320.6320.2019.9019.8619.3319.0018.8418.2117.7317.5616.8216.5616.0215.17
250
12.9916.6322.2825.52
1.312.374.236.407.268.099.079.86
10.6311.5512.2812.9913.8714.5415.1916.0216.6317.2218.0218.5719.0919.8420.3220.7821.4921.9022.2822.9423.2723.5724.2024.4524.6725.2525.4125.5426.0726.1426.1726.6026.6326.6626.6826.8626.9927.0526.9026.8826.8426.4826.4026.3325.8525.6525.5224.9124.8024.3823.6323.4322.9022.0121.7221.0720.0319.6518.8717.68
335
21.3327.3033.82
2.063.786.88
10.3711.8113.2014.8016.1317.4218.9320.1521.3322.7723.8824.9526.3127.3028.2429.5330.3931.1932.4132.5532.7032.9133.3933.8237.0037.3937.7138.6638.8639.0039.8539.8640.3740.5440.6540.6940.6840.5040.4640.2539.9739.6339.2138.2838.16
355
23.2329.6938.81
2.234.107.47
11.2912.8614.3816.1217.5718.9720.6221.9523.2324.8026.0027.1528.6329.6930.7032.0933.0033.8535.1535.8936.5737.7738.3338.8139.9240.2841.0741.5641.7042.3542.6442.6842.7042.7542.7943.1142.9942.6042.5142.1641.2641.2140.6139.4139.16
50
TABLE 17:Section SPC: Power Rating P(kW) for Arc of Contact 180°
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratioNRPM
700950
14502850
50100200300350400450500550600650700750800850900950
10001050110011501200125013001350140014501500155016001650170017501800185019001950200020502100215022002250
450
31.9240.3250.94
3.055.64
10.3515.6017.7819.8822.2824.2726.1828.4430.2231.9234.0435.5937.0539.0340.3241.5143.3444.3445.8146.9047.5848.8249.6349.9550.9451.4451.8452.1052.2552.7552.1951.9751.6251.1450.5249.76
560
41.7051.0259.36
3.997.41
13.6320.4723.3126.0329.1531.6834.0836.9939.1741.7043.8945.6647.8949.7151.0252.9254.3055.0756.6157.5257.6958.8159.1959.3759.3659.15
710
53.1962.33
5.259.78
18.0226.9030.5734.0538.0441.1844.6647.7050.2153.1955.6157.3659.7761.4762.3364.0864.9565.5065.7965.7265.31
375
25.1132.0341.52
2.414.448.11
12.2113.9115.5617.4419.0120.5222.3023.7325.1126.8028.0929.3130.9032.0333.0934.5835.5336.4137.8038.5539.2340.5241.0641.5242.6842.9943.7944.2444.2944.9345.1645.2545.3945.3945.8845.1344.8744.5044.0843.55
400
27.4234.8844.66
2.624.848.84
13.3415.2017.0019.0720.7822.4324.3725.9327.4229.2630.6531.9633.6834.8835.9937.6138.6039.5040.9941.7442.4043.7744.2744.6644.9545.1446.9047.2947.5047.7947.9147.9447.8747.7047.4447.0746.6045.4545.3344.53
500
36.2445.4255.51
3.486.45
11.8517.8320.3222.7125.4427.6929.8332.3934.3736.2438.6440.3241.8844.0845.4247.2148.6249.5751.1052.1652.6753.9054.5854.6155.5155.7655.8655.8155.5954.5154.50
630
47.2856.7761.37
4.588.52
15.6723.5026.7329.8133.3736.2038.8542.1344.4847.2849.6251.4153.8055.6356.7758.7159.9460.3461.7662.3362.5562.7362.5562.1661.37
1.01to
1.05
0.140.190.290.57
0.010.020.040.060.070.080.090.100.110.120.130.140.150.160.170.180.190.200.210.220.230.240.250.260.270.280.290.300.310.320.330.340.350.360.370.380.390.400.410.420.430.440.45
0.901.221.863.67
0.060.130.260.390.450.510.580.640.710.770.840.900.961.031.091.161.221.291.351.411.481.541.611.671.741.801.861.931.992.062.122.192.252.312.382.442.512.572.642.702.772.832.89
1.06to
1.26
1.27to
1.57
1.281.732.655.20
0.090.180.370.550.640.730.820.911.001.101.191.281.371.461.551.641.731.831.922.012.102.192.282.372.462.562.652.742.832.923.013.103.193.293.383.473.563.653.743.833.924.024.11
For>
1.57
1.572.133.256.38
0.110.220.450.670.780.901.011.121.231.341.451.571.681.791.902.012.132.242.352.462.572.692.802.913.023.133.253.363.473.583.693.803.924.034.144.254.364.484.594.704.814.925.04
51
52
TABLE 18:Section 8V: Power Rating P(kW) for Arc of Contact 180°
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratioNRPM
700950
1450
50100150200250300350400450500550600650700750800850900950
10001050110011501200125013001350140014501500155016001650170017501800185019001950200020502100215022002250
1.01to
1.05
0.280.380.59
0.020.040.060.080.100.120.140.160.180.200.220.240.260.280.300.320.340.360.380.400.420.440.460.490.510.530.550.570.590.610.630.650.670.690.710.730.750.770.790.810.830.850.870.890.91
1.06to
1.26
1.832.483.79
0.130.260.390.520.650.780.911.051.181.311.441.571.701.831.962.092.222.352.482.612.742.883.013.143.273.403.533.663.793.924.054.184.314.444.574.704.844.975.105.235.365.495.625.755.88
1.27to
1.57
2.603.525.38
0.190.370.560.740.931.111.301.481.671.862.042.232.412.602.782.973.153.343.523.713.904.084.274.454.644.825.015.195.385.575.755.946.126.316.496.686.867.057.237.427.617.797.988.168.35
For>
1.57
3.184.326.60
0.230.450.680.911.141.361.591.822.052.272.502.732.963.183.413.643.874.094.324.554.785.005.235.465.695.916.146.376.606.827.057.287.517.737.968.198.428.648.879.109.339.559.78
10.0110.23
355
28.4535.7744.55
2.895.247.389.94
11.9713.9016.1617.9819.7321.8323.4725.0427.0028.4529.8231.6632.9134.0735.7736.7937.7339.2940.0741.2842.1642.6743.0644.3444.5545.3745.7545.6446.2446.3446.2046.1046.0545.5245.3244.7943.5543.4042.5241.5340.41
450
41.8452.1761.97
4.157.61
10.8014.5117.5420.4323.7426.4629.0632.1634.5836.8839.7541.8444.3246.4548.1750.3852.1753.4755.3856.7957.6259.2060.1960.5061.7162.2462.6062.8062.8162.6562.3161.7761.0560.1258.9857.6456.0854.31
475
45.2156.1766.25
4.488.23
11.7015.6918.9722.1025.7128.6631.4734.8137.4239.8942.9845.2147.2950.1451.9454.2956.1757.4959.4960.9361.7063.3264.2765.0465.6366.0466.2566.2766.0865.6965.0864.2563.19
500
48.5260.0369.44
4.808.83
12.5616.8820.4223.7927.6630.8333.8537.4340.2242.8546.1648.5251.3553.7455.6158.0960.0361.3463.4264.8565.5367.1768.0468.7169.1769.4269.4469.2468.8068.1167.1865.9964.54
530
52.4064.4772.63
5.199.57
13.6218.2922.1325.7929.9833.4136.6740.5443.5346.3449.9152.4055.4257.9459.8662.4764.4765.7367.8769.2770.4671.4272.1672.6572.9072.9072.63
335
25.5332.0940.16
2.634.756.678.97
10.7812.5114.5416.1717.7219.6121.0722.4724.2325.5326.7628.4029.5230.5732.0933.0233.8635.2735.9836.6137.9038.3838.7739.9340.1640.9341.3141.6241.8541.9942.0542.0341.9241.4241.2641.0440.0439.9739.2938.5037.62
375
31.3439.3748.70
3.165.758.11
10.9113.1515.2917.7819.8021.7324.0425.8527.5829.7431.3432.8534.8736.2437.5139.3740.4841.4843.1944.0145.3346.2746.7847.8848.5448.7049.5649.9150.1050.3050.3350.2450.0449.7149.2648.6947.9346.3946.1645.0543.7942.40
425
38.4048.0357.96
3.826.999.91
13.3116.0718.7221.7724.2626.6529.4831.7133.8236.4638.4040.2242.6744.2946.3448.0349.2951.0952.4553.3154.8255.8256.2357.4458.0458.5158.8459.0159.1059.2058.6158.1557.5256.7255.7554.5853.23
560
56.1868.6875.10
5.5810.3014.6719.6923.8327.7732.2835.9639.9743.6046.7850.4153.5756.1859.8862.0163.9566.6768.6870.4872.0473.3674.4475.2575.8076.0676.0475.7275.10
600
61.0673.95
6.1011.2816.0721.5626.0930.4035.3239.3243.6947.6251.0354.9558.3361.0664.4667.2069.1271.9573.9575.6877.9578.2879.1379.6679.8779.7479.25
630
64.5977.6277.79
6.4811.9917.7022.9427.7632.3437.5741.8146.4450.5954.1658.2861.8064.5968.1370.9273.4475.6777.6279.2580.5681.5382.1682.4282.3181.8080.8979.5677.79
710
74.1086.13
7.5113.9220.5326.6132.1938.9043.4948.3153.5958.2762.1966.7970.6174.1077.2680.0682.4984.5286.1387.3188.0488.3088.0687.3186.03
800
82.3593.33
8.6516.0523.6830.6837.0743.8449.9855.3761.3366.5070.6775.7079.6982.3586.3188.8890.9292.4293.3393.6393.2892.2890.5688.14
53
TABLE 19:Section ZX: Power Rating P(kW) for Arc of Contact 180°
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
700950
14502850
100200300400500600700800900950
100011001200130014001450150016001700180019002000210022002300240025002600270028002850290030003100320033003400350036003700380039004000410042004300440045004600470048004900500051005200530054005500560058006000620064006600680070007200740076007800800082008400
50
0.320.390.570.83
0.060.130.150.220.240.270.320.340.360.390.420.450.480.510.550.570.590.610.630.660.660.660.680.710.720.730.760.780.800.820.830.850.870.880.900.920.930.930.940.960.970.991.001.011.021.041.051.061.071.081.091.101.111.121.131.141.141.151.161.171.191.201.211.221.231.231.241.241.241.251.251.241.24
63
0.430.540.741.19
0.080.150.210.270.330.380.430.470.520.540.560.610.650.690.730.740.760.800.840.870.900.940.971.001.031.061.091.121.151.171.191.201.231.251.281.301.331.351.371.391.421.441.461.481.501.521.531.551.571.591.601.621.631.651.661.681.691.701.711.741.761.781.801.811.821.831.841.851.851.861.861.861.85
80
0.580.731.011.63
0.110.200.290.370.440.510.580.640.700.730.760.820.880.930.991.011.041.091.141.191.231.281.331.371.411.451.491.531.571.611.631.651.691.721.761.791.821.851.881.921.941.972.002.032.062.082.112.132.152.172.202.222.242.262.272.292.312.322.342.372.392.412.432.442.452.462.462.462.462.452.442.422.40
90
0.660.841.171.87
0.130.230.330.420.500.590.660.740.810.840.880.941.011.071.131.171.191.251.311.371.421.471.521.581.621.671.721.771.811.851.871.901.941.982.022.062.092.132.162.202.232.262.292.322.352.382.412.432.462.482.512.532.552.572.592.602.622.642.652.682.702.712.732.732.742.732.732.722.702.682.65
100
0.750.951.312.11
0.140.260.370.470.570.660.750.830.910.950.991.061.141.211.281.311.351.411.481.541.601.661.721.771.831.881.941.992.042.082.112.132.182.222.272.312.352.392.432.462.502.532.572.602.632.662.692.712.742.762.792.812.832.852.862.882.902.912.922.942.962.962.972.962.952.942.922.89
112
0.841.081.492.38
0.160.300.420.530.640.750.840.941.031.081.121.201.291.371.451.491.521.601.671.741.811.881.942.002.072.132.182.242.302.352.382.402.452.502.552.592.642.682.722.762.802.832.872.902.932.962.993.013.043.063.083.103.123.133.153.163.173.183.193.203.203.193.173.153.123.083.032.98
40
0.210.270.350.53
0.040.090.110.140.160.190.210.230.250.270.290.290.310.340.350.350.360.380.390.410.420.430.450.460.460.470.480.500.520.530.530.540.540.550.560.560.570.580.590.610.610.620.620.630.630.640.640.650.650.650.660.670.670.670.680.680.680.690.690.690.700.700.700.700.700.700.700.690.690.690.680.680.67
45
0.270.370.450.69
0.050.110.170.230.290.300.300.310.350.370.390.390.390.430.440.450.460.470.500.530.550.550.560.570.580.600.620.640.670.690.690.700.710.710.730.740.750.760.770.780.790.810.810.820.840.850.860.860.860.870.870.880.880.900.900.910.910.920.930.940.940.950.960.970.970.970.970.970.980.970.970.970.97
56
0.360.480.631.00
0.070.130.180.230.280.320.360.400.440.480.510.550.550.580.610.630.640.680.700.730.760.790.820.840.870.890.920.940.960.981.001.011.031.051.071.091.111.131.151.161.181.201.221.231.251.261.281.291.311.321.331.351.361.371.381.391.401.411.421.441.461.481.491.501.511.521.531.541.541.541.551.551.54
71
0.500.630.871.40
0.090.180.250.320.380.440.500.550.610.630.660.710.760.800.850.870.890.940.981.021.061.101.141.181.211.251.281.321.351.381.401.421.451.481.511.541.561.591.621.651.671.701.721.741.771.791.811.831.851.871.891.911.931.951.961.981.992.012.022.052.072.092.112.132.142.152.162.162.172.172.162.162.15
1.01to
1.05
0.000.010.010.02
0.000.000.000.000.000.000.000.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.030.030.030.030.030.030.030.030.030.030.030.030.030.030.030.040.040.040.040.040.040.040.040.040.040.050.050.050.050.050.050.050.060.06
1.06to
1.26
0.020.020.040.07
0.000.010.010.010.010.020.020.020.020.020.030.030.030.030.040.040.040.040.040.050.050.050.050.060.060.060.060.070.070.070.070.070.080.080.080.080.090.090.090.090.100.100.100.100.110.110.110.120.120.120.120.130.130.130.130.140.140.140.140.150.150.160.160.170.170.180.180.190.190.200.200.210.21
1.27to
1.57
0.030.040.050.11
0.000.010.010.010.020.020.030.030.030.040.040.040.040.050.050.050.060.060.060.070.070.070.080.080.080.090.090.100.100.100.110.110.110.110.120.120.130.130.130.140.140.140.150.150.150.160.160.170.170.170.180.180.180.190.190.200.200.200.210.210.220.230.240.240.250.260.270.270.280.290.300.300.31
For>
1.57
0.040.050.080.16
0.010.010.020.020.030.030.040.050.050.050.060.060.070.070.080.080.090.090.100.100.110.110.120.130.130.140.140.150.150.160.160.170.170.180.180.190.190.200.210.210.220.220.230.230.240.250.250.260.260.270.270.280.290.290.300.300.310.310.320.330.340.350.370.380.390.400.410.420.430.450.460.470.48
54
TABLE 20:Section AX: Power Rating P(kW) for Arc of Contact 180°
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
700950
14502850
100200300400500600700800900950
10001100120013001400145015001600170018001900200021002200230024002500260027002800285029003000310032003300340035003600370038003900400041004200430044004500460047004800490050005100520053005400550056005700580059006000
80
1.071.321.832.60
0.230.460.560.750.931.041.071.221.281.321.441.511.641.641.771.831.851.871.992.062.082.192.222.262.362.402.422.522.532.552.602.642.652.672.742.752.762.802.822.842.862.882.892.902.912.932.942.942.942.952.952.962.992.992.982.962.902.852.852.802.782.752.72
95
1.401.802.443.58
0.300.600.730.971.221.301.401.601.701.801.822.002.182.192.362.442.482.522.682.802.822.973.053.083.223.283.323.403.483.523.583.653.683.703.753.803.843.903.953.964.004.024.054.084.104.114.124.124.134.134.134.134.124.114.104.084.054.034.003.983.933.893.85
106
1.642.052.894.27
0.340.680.841.121.401.501.641.871.952.052.142.352.572.592.792.892.992.993.183.363.443.523.603.663.833.994.054.104.154.194.274.344.384.404.454.504.574.654.694.714.754.804.814.834.854.884.894.894.905.014.954.884.864.844.824.784.764.724.654.604.584.524.45
112
1.772.253.124.62
0.370.740.911.211.521.681.772.022.202.252.312.542.772.803.023.123.233.233.433.553.623.813.903.974.154.204.274.304.404.544.624.704.724.774.804.824.854.905.005.105.155.185.205.225.245.265.265.275.275.385.375.365.355.255.165.105.085.03
118
1.902.403.364.97
0.390.780.971.291.621.801.902.172.302.402.482.732.983.013.243.363.473.473.693.793.894.104.204.274.404.504.594.664.774.884.975.055.125.205.235.255.315.355.405.465.505.555.585.585.595.615.745.875.805.735.605.565.505.485.465.415.355.29
125
2.042.603.635.35
0.420.841.041.391.731.902.042.332.502.602.682.953.223.253.503.633.753.753.984.104.214.434.584.614.704.804.965.165.205.265.355.405.455.525.605.655.725.755.805.875.905.935.965.975.986.006.006.145.975.955.925.895.85
63
0.670.821.101.39
0.160.320.370.490.620.640.670.770.800.820.850.940.960.991.071.101.101.101.171.221.241.261.321.321.331.341.341.351.371.381.391.401.401.411.411.421.421.431.431.441.441.441.431.431.421.411.371.361.351.351.351.331.321.301.271.261.251.201.181.161.111.081.05
71
0.861.051.451.98
0.190.380.460.610.770.840.860.980.991.051.101.211.281.301.401.451.461.471.561.601.621.711.731.751.831.841.851.921.931.941.982.012.012.022.032.052.072.102.112.112.122.132.142.142.152.152.152.142.142.132.122.112.092.082.072.052.032.012.001.991.941.931.90
90
1.291.632.243.27
0.280.560.670.891.121.251.291.471.601.631.671.842.002.012.172.242.322.352.452.502.582.722.802.812.943.003.023.143.183.213.273.333.443.453.473.483.493.593.593.603.623.643.683.703.703.733.733.743.763.763.763.763.753.743.733.703.683.673.673.663.653.643.60
100
1.511.922.643.90
0.320.640.781.041.301.451.511.731.831.921.972.172.362.372.552.642.732.742.912.983.063.223.303.353.503.553.603.743.803.833.903.974.004.024.104.154.184.204.254.314.354.384.404.424.454.474.484.484.494.594.554.524.504.484.454.424.404.374.304.284.254.204.15
1.01to
1.05
0.020.030.040.09
0.000.010.010.010.020.020.020.020.030.030.030.030.040.040.040.040.050.050.050.050.060.060.060.070.070.070.080.080.080.090.090.090.090.090.100.100.100.110.110.110.120.120.120.120.130.130.130.140.140.140.150.150.150.160.160.160.160.170.170.170.180.180.18
1.06to
1.26
0.080.110.170.33
0.010.020.030.050.060.070.080.090.100.110.110.130.140.150.160.170.170.180.200.210.220.230.240.250.260.280.290.300.310.320.330.330.340.360.370.800.390.400.410.420.440.450.460.470.480.490.510.520.530.540.550.560.570.590.600.610.620.630.640.650.670.680.69
1.27to
1.57
0.120.160.240.47
0.020.030.050.070.080.100.120.130.150.160.170.180.200.220.230.240.250.260.280.300.310.330.350.360.380.400.410.430.450.470.460.480.500.510.530.550.560.580.600.610.630.650.660.680.700.710.730.740.760.780.790.810.830.840.860.880.890.910.930.940.960.980.99
For>
1.57
0.160.240.370.73
0.030.050.080.100.130.150.180.210.230.240.260.280.310.330.360.370.380.410.440.460.490.510.540.560.590.620.640.670.690.730.720.740.770.800.820.850.870.900.920.950.981.001.031.051.081.101.131.151.181.211.231.261.281.311.331.361.391.411.441.461.491.511.54
132
2.192.703.885.73
0.450.901.111.481.852.002.192.502.602.702.873.163.443.483.753.884.024.034.284.404.514.754.854.945.165.225.325.535.605.635.735.835.875.906.006.056.106.156.206.246.286.306.326.346.346.346.336.316.296.256.216.166.11
140
2.353.054.186.10
0.480.961.201.602.002.202.352.693.023.053.093.403.713.754.044.184.334.334.604.704.855.115.215.315.555.655.715.845.946.046.106.186.256.316.356.436.516.556.606.646.686.696.706.706.706.686.666.63
150
2.563.104.546.58
0.521.041.301.732.172.372.562.762.863.103.363.704.034.074.384.544.704.715.005.105.275.455.655.766.026.106.186.336.436.526.586.646.716.796.856.906.987.027.057.097.097.107.117.107.077.047.006.94
160
2.763.454.907.11
0.561.121.401.872.332.502.763.153.303.453.623.984.344.394.734.905.075.075.395.505.675.806.006.196.406.516.636.786.886.987.117.157.207.247.347.407.417.437.467.487.487.477.45
180
3.153.985.597.88
0.631.261.592.122.652.953.153.453.753.984.144.554.975.015.405.595.785.786.146.306.446.746.857.007.157.307.457.577.687.797.887.957.958.018.068.098.118.15
55
TABLE 21:Section BX: Power Rating P(kW) for Arc of Contact 180°
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
700950
14502850
100200300400500600700800900950
1000110012001300140014501500160017001800190020002100220023002400250026002700280028502900300031003200330034003500360037003800390040004100420043004400450046004700480049005000
106
2.202.853.855.64
0.460.921.381.421.782.132.202.512.832.852.863.153.433.453.723.853.983.984.234.444.454.684.854.865.085.305.315.445.535.545.645.745.805.816.006.196.206.216.256.266.366.526.536.556.636.536.526.516.376.366.356.326.31
118
2.563.344.526.66
0.531.061.591.652.062.482.562.933.293.343.353.694.024.054.364.524.674.684.975.275.285.525.725.735.996.256.266.426.666.666.666.776.856.867.087.107.117.327.537.547.557.687.697.707.787.797.807.817.757.607.597.347.33
132
2.983.855.287.78
0.611.221.831.912.392.872.983.413.833.853.914.304.694.735.095.285.465.475.816.126.136.456.706.717.027.327.337.507.767.777.787.917.927.998.258.498.508.508.628.658.678.908.958.968.968.758.748.738.658.638.448.268.23
140
3.214.365.708.38
0.651.301.952.062.583.093.213.674.134.364.444.645.065.115.505.705.905.916.286.656.666.977.327.337.587.917.928.098.208.238.388.528.828.838.878.888.899.019.029.039.279.529.099.089.079.069.058.97
160
3.795.146.749.90
0.761.522.282.433.043.653.794.334.875.145.255.485.986.046.506.746.976.987.427.857.918.228.638.828.919.299.399.499.859.909.909.949.959.96
10.2810.5810.5910.6010.3910.2810.2710.2610.2010.2010.1110.0210.0010.00
180
4.355.717.74
10.99
0.871.742.612.783.484.174.354.975.595.715.726.296.866.947.477.748.008.008.508.918.929.399.709.70
10.1410.5810.5910.7410.7910.8010.9911.0111.0311.1111.2111.2211.2411.5711.2311.1911.1811.0510.94
90
1.702.182.934.19
0.370.741.111.111.391.671.701.942.092.182.192.412.632.632.832.933.003.103.203.343.353.533.703.793.813.973.984.064.114.124.194.274.414.424.454.454.464.594.604.634.644.644.654.774.884.794.834.844.834.804.794.664.65
100
2.012.603.515.11
0.420.841.261.311.641.702.012.302.582.602.612.873.133.153.393.513.633.643.854.074.084.254.474.484.614.814.824.935.015.025.115.205.385.395.435.445.455.615.625.635.755.905.925.935.985.995.996.045.785.775.765.745.72
112
2.383.104.186.16
0.490.981.471.541.932.312.382.723.063.103.113.423.733.754.044.184.334.344.574.844.855.115.365.375.545.785.795.936.166.166.166.276.486.496.546.556.566.726.736.756.937.007.017.047.216.936.936.936.936.926.916.866.85
125
2.773.764.907.23
0.571.141.711.782.232.672.773.173.563.763.783.994.364.394.734.905.075.085.405.685.695.996.226.236.516.806.816.977.107.107.237.357.617.657.677.917.927.937.957.967.987.997.998.198.398.408.218.207.977.967.947.847.83
1.01to
1.05
0.030.040.070.13
0.000.010.010.020.020.030.030.040.040.040.050.050.060.060.070.070.070.070.080.080.090.090.100.100.110.110.120.130.130.140.140.130.140.150.150.150.160.160.170.170.180.180.190.190.200.200.210.210.220.220.220.230.23
1.06to
1.26
0.120.170.260.5
0.020.040.050.070.090.110.120.140.160.170.180.190.210.230.250.260.260.280.300.320.330.350.370.390.410.420.440.460.480.490.500.510.530.550.560.580.600.620.630.650.670.690.710.720.740.760.780.790.810.830.850.860.88
1.27to
1.57
0.180.240.370.72
0.030.050.080.1
0.130.150.180.2
0.230.240.250.280.310.330.360.370.380.410.430.460.480.510.530.560.580.610.640.660.690.710.720.740.760.790.810.840.860.890.920.940.970.991.021.041.071.091.121.141.171.191.231.251.27
For>
1.57
0.280.370.571.12
0.040.080.120.160.200.240.280.320.350.370.390.430.470.510.550.570.590.630.670.710.750.790.830.870.910.950.991.021.061.101.121.141.181.221.261.301.341.381.421.461.501.541.581.621.651.691.731.771.811.851.891.931.97
190
4.636.288.22
11.54
0.931.862.792.963.704.444.635.295.956.286.296.707.317.377.948.228.508.519.029.559.569.95
10.4410.4510.7211.1911.1911.3211.3311.3411.5411.5511.5511.6011.6511.6611.6612.00
200
4.906.438.70
12.03
0.981.962.943.133.914.704.905.606.306.436.447.087.737.808.408.709.009.109.539.969.97
10.5010.7710.7811.2711.3211.4011.7011.7111.8212.0312.0412.0512.0612.4212.3712.3612.35
212
5.236.859.25
12.57
1.042.083.123.344.185.015.235.986.726.856.867.558.238.298.939.259.579.58
10.1310.7210.7311.1211.1311.3811.5011.7511.8912.2412.2512.3512.5712.5812.45
224
5.557.539.79
13.03
1.112.223.333.544.435.315.556.347.147.537.548.018.748.789.469.79
10.0610.0710.7010.8011.1211.7111.7211.9412.3412.3512.5113.0113.0113.0213.0313.2612.84
250
6.228.44
10.7313.77
1.242.483.723.984.985.976.227.118.008.448.458.979.789.80
10.5510.7310.7411.1711.8711.9212.2512.8012.8013.0213.3413.3513.4613.5213.5513.6313.7713.4713.37
280
6.988.91
12.16
1.402.804.204.475.596.196.987.988.448.919.12
10.0310.3410.9011.7412.1612.2012.3313.0813.1013.3813.8614.0214.0814.1914.2014.21
TABLE 22:Section CX: Power Rating P(kW) for Arc of Contact 180°
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratioNRPM
700950
14502850
50100150200250300350400450500550600650700750800850900950
100010501100115012001250130013501400145015001550160016501700175018001850190019502000205021002150220022502300235024002450250025502600265027002750280028502900295030003050310031503200325033003350340034503500
1.01to
1.05
0.060.080.130.25
0.000.010.010.020.020.030.030.040.040.040.050.050.060.060.070.070.070.080.080.090.090.100.100.110.110.110.120.120.130.130.140.140.150.150.150.160.160.170.170.180.180.180.190.190.200.200.210.210.220.220.220.230.230.240.240.250.250.260.260.260.270.270.280.280.290.290.290.300.300.31
1.06to
1.26
0.230.320.480.95
0.020.030.050.070.080.100.120.130.150.170.180.200.220.230.250.270.280.300.320.330.350.360.380.400.410.430.450.460.480.500.510.530.550.560.580.600.610.630.650.660.680.700.710.730.750.760.780.800.810.830.850.860.880.900.910.930.950.960.980.991.011.031.041.061.081.091.111.131.141.16
1.27to
1.57
0.330.450.691.36
0.020.050.070.100.120.140.170.190.220.240.260.290.310.330.360.380.410.430.450.480.500.530.550.570.600.620.650.670.690.720.740.770.790.810.840.860.880.910.930.960.981.001.031.051.081.101.121.151.171.201.221.241.271.291.321.341.361.391.411.431.461.481.511.531.551.581.601.631.651.67
For>
1.57
0.520.701.072.11
0.040.070.110.150.190.220.260.300.330.370.410.440.480.520.560.590.630.670.700.740.780.820.850.890.930.961.001.041.071.111.151.191.221.261.301.331.371.411.451.481.521.561.591.631.671.701.741.781.821.851.891.931.962.002.042.082.112.152.192.222.262.302.332.372.412.452.482.522.562.59
160
5.767.289.89
14.62
0.641.281.922.082.602.923.413.894.064.514.765.195.635.766.176.396.797.197.287.667.858.228.608.669.029.179.529.889.89
10.2310.3510.6811.0011.0011.3211.4111.7311.9811.9912.3012.3412.6412.9412.9513.1313.1513.4413.7213.7513.8513.9014.0914.3614.3814.4214.4714.6214.8714.8714.8814.9014.9114.9114.9215.1515.1615.2315.2515.2715.29
200
7.599.61
13.0118.40
0.831.662.492.723.403.824.465.095.335.926.276.847.417.598.138.428.959.479.61
10.1210.3510.8411.3411.4111.8912.0712.5313.0013.0113.4613.6014.0414.4114.4214.8414.9215.3315.6115.6216.0216.0416.4316.6116.6217.0017.1017.3217.6917.7117.7517.7618.0118.2118.2418.2618.3218.4018.4218.4418.4518.4718.4818.5018.3218.30
250
9.7712.3416.54
1.062.123.183.504.384.915.736.556.867.628.078.809.549.77
10.4710.8411.5212.2012.3412.9913.2813.9114.5414.5915.2015.4116.0016.5316.5417.1117.2217.7818.3318.3418.6918.7119.2319.7519.7619.9419.9520.3420.3520.3620.6220.6320.8120.8220.9021.3321.3421.4121.0321.0221.01
280
11.0313.8918.59
1.202.403.603.954.945.556.487.407.768.629.129.95
10.7811.0311.8212.2212.9813.7513.8914.6214.9315.6416.3516.3717.0517.2517.9118.5818.5919.0819.1619.7820.4020.6020.7020.7121.2221.8021.8521.8721.8822.0122.1322.1522.5522.5622.6722.6822.6822.70
315
12.4515.6220.72
1.352.704.054.475.596.297.348.398.779.74
10.3111.2512.1812.4513.3413.7814.6415.5015.6216.4416.7617.5618.3618.3719.0619.2319.9720.7120.7221.1821.1821.8622.0622.0722.5422.5523.1823.1923.2023.6723.6823.8723.8823.9023.95
335
13.2416.5821.52
1.442.884.324.765.956.707.828.939.34
10.3810.9711.9712.9613.2414.1914.6415.5616.4716.5817.4517.7518.6018.8419.3520.1620.2921.0721.1421.5222.2622.2722.9322.9423.0523.7323.7423.7523.7623.8624.47
140
4.816.078.23
12.29
0.541.081.621.762.202.452.863.103.403.783.994.354.724.815.155.335.666.006.076.396.546.857.167.217.517.637.928.228.238.518.618.899.159.169.439.509.769.989.99
10.2510.2910.5410.7910.8010.9610.9811.2211.4611.4711.5811.5811.8112.0312.0412.1112.1212.2912.3012.3212.4012.4612.5612.6012.6612.7012.7512.7712.7912.8712.90
150
5.296.689.07
13.49
0.591.181.771.922.402.693.143.593.734.144.384.785.185.295.675.866.236.596.687.037.207.547.897.948.278.408.729.059.079.389.499.80
10.0910.0910.3910.4710.7611.0511.0611.2811.3311.6111.8811.8912.0712.0912.3512.6212.6512.7412.7312.9813.2313.2413.2913.3013.4913.7213.7213.7313.7413.8714.1014.1114.1314.1414.1514.2014.2214.23
180
6.698.46
11.4916.66
0.741.482.222.413.013.373.934.494.705.225.526.026.526.697.177.427.888.358.468.919.129.559.99
10.0610.4810.6511.0611.4711.4911.8912.0112.4012.7512.7613.1413.2213.5913.8513.8714.2314.2614.6114.8014.8115.1315.1415.4715.8015.8515.9015.9116.1516.4616.4716.4816.4916.6616.6916.7016.8716.8916.9716.9917.0217.0617.0717.0917.3416.8116.78
224
8.6510.9414.7920.07
0.941.882.823.103.884.355.085.806.086.767.157.808.458.659.279.60
10.2010.8010.9411.5211.7812.3412.9012.9713.5113.7214.2514.7814.7915.2715.4015.9016.3916.4016.7716.8317.3017.5517.5617.9817.9918.4318.5418.5618.9818.9919.2819.2919.3019.6519.7019.8319.8419.8520.0120.0620.0720.4220.4320.05
355
14.0217.5022.50
1.533.064.595.066.337.108.289.479.91
11.0111.6312.6913.7414.0215.0215.4816.4517.4117.5018.4218.7119.6020.4920.5021.1921.2922.1122.4922.5023.2823.4523.9024.6424.6524.60
400
15.7019.4624.39
1.723.445.165.707.138.009.33
10.6711.1512.3913.0714.2615.4515.7016.8217.3018.3819.4619.4620.4820.7421.7322.7222.7323.3223.3523.6524.0324.3925.2325.5025.7126.5225.3725.30
450
17.4821.4725.99
1.943.885.826.408.008.98
10.4811.9712.4813.8714.6015.6016.5617.4818.3619.2020.4020.7621.4722.6022.7623.8423.8724.3525.3625.3726.1326.1426.1426.15
500
19.1723.28
2.154.306.457.098.869.94
11.6012.5513.7815.3116.0817.5419.0019.1720.5420.9722.2822.5723.2824.5124.5325.7025.7125.9026.31
630
23.2326.99
2.695.388.078.83
11.0412.3314.3915.4916.9618.8419.6521.4423.2223.2324.7224.9326.4926.5026.9927.8527.8629.1928.2828.3128.23
56
TABLE 23: Section XPZ/3VX: Power Rating P(kW) for Arc of Contact 180°
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
700950
14502850
100200300400500600700800900950
100011001200130014001450150016001700180019002000210022002300240025002600270028002850290030003100320033003400350036003700380039004000410042004300440045004600470048004900500051005200530054005500560058006000620064006600680070007200740076007800800082008400
60
0.730.911.272.10
0.140.240.330.410.480.650.730.800.870.910.941.051.121.181.241.271.301.401.461.511.571.621.711.761.811.861.901.992.042.082.102.122.162.252.292.332.372.402.482.522.552.582.612.702.732.762.792.822.892.922.942.962.993.053.073.093.113.133.203.233.303.323.343.433.443.443.523.523.553.573.583.593.60
71
0.991.251.783.04
0.190.330.460.580.680.880.991.101.201.251.301.451.551.641.731.781.821.962.052.132.212.292.432.512.592.662.732.862.933.003.043.073.143.253.313.383.443.503.623.683.733.793.843.954.004.054.104.144.254.294.344.384.424.534.574.604.644.674.774.834.944.995.035.155.185.205.315.325.325.435.455.475.49
85
1.331.692.424.18
0.250.450.620.780.931.181.331.481.621.691.761.962.102.232.362.422.482.672.792.913.033.143.333.443.553.663.773.934.034.134.184.234.334.494.584.674.764.855.015.095.175.255.335.485.555.625.695.765.905.966.026.086.146.286.336.386.436.476.626.706.856.916.967.137.167.187.347.347.407.477.497.507.50
90
1.451.842.644.59
0.270.480.670.851.011.281.451.611.761.841.922.142.292.432.582.642.712.923.063.193.323.443.643.763.894.004.124.314.424.534.594.644.754.925.025.125.225.315.495.585.675.765.846.006.086.166.236.306.476.546.606.676.736.886.946.997.047.087.247.327.497.557.607.787.807.827.998.008.108.108.128.128.11
95
1.572.002.874.98
0.290.520.720.911.091.391.571.751.922.002.092.322.482.642.802.872.953.173.323.463.603.743.954.094.224.354.474.684.804.924.985.045.165.345.455.565.665.775.966.066.156.256.346.526.616.696.776.847.027.097.167.237.297.467.527.577.627.677.847.928.108.168.208.408.428.428.598.628.648.688.618.528.41
100
1.692.153.105.37
0.310.560.780.981.171.491.691.882.062.152.242.502.682.853.023.103.183.423.583.743.894.044.264.414.554.694.835.045.175.305.375.435.555.765.886.006.116.226.426.536.636.736.827.027.117.207.287.367.557.637.707.777.838.028.088.148.198.238.428.508.688.738.768.988.989.009.059.109.169.219.198.178.11
56
0.630.771.081.76
0.130.220.300.380.440.560.630.690.740.770.800.900.951.011.061.081.101.191.241.281.331.371.441.481.521.561.591.671.711.741.761.771.801.881.911.941.972.002.062.092.112.142.162.232.252.272.292.312.372.392.412.422.442.502.512.532.542.552.612.632.682.692.702.762.762.762.822.832.842.852.852.852.85
63
0.801.001.412.36
0.160.280.380.480.560.710.800.880.961.001.031.161.231.311.381.411.441.551.621.681.741.801.911.972.032.082.142.232.282.332.362.382.432.532.582.622.672.712.802.842.882.922.963.043.083.113.153.183.263.293.323.353.383.463.493.513.533.553.643.683.763.793.813.913.933.944.024.024.024.104.124.134.14
80
1.211.532.193.78
0.230.410.570.710.851.071.211.341.471.531.591.781.902.022.142.192.252.422.532.642.742.853.013.113.213.313.403.553.643.733.783.823.904.054.134.214.294.374.524.604.674.744.814.945.015.075.135.195.335.395.445.495.555.675.725.765.815.855.986.056.196.256.296.456.486.506.656.656.656.786.816.836.84
1.01to
1.05
0.010.010.020.04
0.000.000.000.000.010.010.010.010.010.010.010.010.010.020.020.020.020.020.020.020.020.020.030.030.030.030.030.030.030.030.040.040.040.040.040.040.040.040.040.050.050.090.050.050.050.050.050.060.060.060.060.060.060.060.060.070.070.070.070.070.070.080.080.080.080.090.090.090.090.100.100.100.10
1.06to
1.26
0.060.080.120.23
0.010.020.020.030.040.050.060.060.070.080.080.090.100.100.110.120.120.130.140.140.150.160.170.180.180.190.200.210.220.220.230.230.240.250.260.260.270.280.290.300.300.310.320.330.340.340.350.360.370.380.380.390.400.410.420.420.430.440.450.460.480.500.510.530.540.560.580.590.610.620.640.660.67
1.27to
1.57
0.080.110.160.32
0.010.020.030.050.060.070.080.090.100.110.110.120.140.150.160.160.170.180.190.200.220.230.240.250.260.270.280.300.310.320.320.330.340.350.360.370.390.400.410.420.430.440.450.470.480.490.500.510.520.530.540.560.570.580.590.600.610.620.640.660.680.700.730.750.770.790.820.840.860.890.910.930.95
For>
1.57
0.100.130.200.40
0.010.030.040.060.070.080.100.110.130.130.140.150.170.180.190.200.210.220.240.250.260.280.290.310.320.330.350.360.380.390.400.400.420.430.450.460.470.490.500.520.530.540.560.570.580.600.610.630.640.650.670.680.700.710.720.740.750.770.780.810.840.860.890.920.950.971.001.031.061.091.111.141.17
112
1.972.523.626.29
0.360.650.911.151.381.741.972.202.412.522.632.923.133.333.533.623.724.004.194.374.554.734.995.165.335.495.655.916.076.226.296.366.516.746.887.017.147.277.517.637.757.867.968.198.298.398.488.568.788.868.939.009.079.299.359.409.459.499.709.769.969.989.98
10.0010.0510.1210.3110.3110.2810.2310.17
125
2.272.904.197.24
0.410.741.041.321.582.002.272.532.782.903.023.373.613.854.074.194.304.624.845.055.265.465.765.966.156.346.526.816.997.167.247.327.487.777.928.078.228.358.628.758.888.999.119.389.499.589.689.76
10.0210.1010.1710.2310.2910.5410.5910.6310.6610.6910.9310.9611.1511.2011.2511.3011.3111.29
140
2.613.344.828.31
0.470.851.201.521.822.302.612.913.203.343.483.884.164.434.694.824.955.325.575.826.056.286.636.857.077.287.497.838.038.228.318.408.588.909.079.239.389.539.849.98
10.1110.2310.3410.5510.6510.7410.8310.9011.3011.3711.4211.4711.5111.8011.8311.8411.8511.8512.1212.2012.2512.2612.25
160
3.073.935.659.65
0.551.001.401.792.152.703.073.423.763.934.104.554.885.195.505.655.806.236.526.807.087.347.758.018.258.498.729.129.349.559.659.759.94
10.3210.5010.6710.8310.9811.3411.4711.6011.7111.8112.1612.2512.3212.3812.4312.7712.8012.8212.8312.8913.1613.2013.2413.2713.28
180
3.514.506.46
10.90
0.631.141.612.052.473.093.513.924.314.504.695.215.585.946.296.466.637.127.457.768.078.378.839.119.389.649.89
10.3410.5710.7910.9011.0011.2011.6311.8111.9712.1212.2612.6712.7912.8912.9813.0513.4513.5013.5313.5513.8713.9413.9814.0514.0814.10
200
3.945.057.24
12.06
0.701.271.792.282.743.473.944.404.835.055.265.856.266.667.057.247.437.988.348.699.029.349.87
10.1710.4610.7410.9911.4911.7311.9512.0612.1612.3512.8212.9913.1313.2613.3813.8413.9213.9914.0314.4014.5014.5914.6614.7114.75
57
58
TABLE 24: Section XPA: Power Rating P(kW) for Arc of Contact 180°
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
700950
14502850
100200300400500600700800900950
100011001200130014001450150016001700180019002000210022002300240025002600270028002850290030003100320033003400350036003700380039004000410042004300440045004600470048004900500051005200530054005500560057005800590060006100620063006400650066006700680069007000
75
1.131.412.033.45
0.210.370.510.630.741.001.131.241.361.411.471.661.771.881.982.032.082.252.352.442.532.622.782.872.953.033.113.263.343.413.453.483.553.703.773.833.893.954.094.154.204.254.304.434.474.524.554.594.734.764.794.824.844.974.995.015.025.035.155.165.165.165.165.285.285.285.305.325.335.345.365.365.36
100
2.152.764.037.10
0.380.690.971.241.491.892.152.402.642.762.883.233.473.703.924.034.144.464.684.895.105.305.605.805.996.186.376.666.847.027.107.197.357.647.807.968.118.258.538.678.808.939.059.329.449.619.729.82
10.0110.1010.2610.3410.4110.6010.6610.8010.8510.9011.0611.0911.2211.2411.2611.4111.4111.5111.5511.5811.6011.6211.6611.6711.68
112
2.633.404.978.79
0.460.841.191.521.842.312.632.943.253.403.553.974.274.554.844.975.115.505.776.046.306.556.927.177.417.657.888.248.468.688.798.899.109.459.659.84
10.0210.2010.5510.7210.8811.0411.1911.5211.6611.8712.0012.1112.3512.4512.6412.7312.8113.0413.1113.2713.3213.3613.5613.5913.7313.7413.7413.9013.9013.9613.9813.9814.0914.1114.1114.0814.06
0.020.030.040.08
0.000.010.010.010.010.020.020.020.030.030.030.030.040.040.040.040.040.050.050.050.060.060.060.060.070.070.070.080.080.080.080.080.090.090.090.100.100.100.110.110.110.110.120.120.120.130.130.130.130.140.140.140.150.150.150.160.160.160.160.170.170.170.180.180.180.180.190.190.190.200.200.200.21
1.01to
1.05
0.130.180.270.54
0.020.040.060.080.090.110.130.150.170.180.190.210.230.250.270.270.280.300.320.340.360.380.400.420.440.450.470.490.510.530.540.550.570.590.610.630.640.660.680.700.720.740.760.780.800.810.830.850.870.890.910.930.950.970.981.001.021.041.061.081.101.121.141.161.171.191.211.231.251.271.291.311.33
1.06to
1.26
0.190.260.390.77
0.030.050.080.110.130.160.190.220.240.260.270.300.320.350.380.390.400.430.460.480.510.540.560.590.620.650.670.700.730.750.770.780.810.830.860.890.910.940.970.991.021.051.081.101.131.161.181.211.241.261.291.321.341.371.401.421.451.481.511.531.561.591.611.641.671.691.721.751.771.801.831.861.88
1.27to
1.57
0.230.310.480.94
0.030.070.100.130.160.200.230.260.300.310.330.360.400.430.460.480.490.530.560.590.630.660.690.730.760.790.820.860.890.920.940.960.991.021.051.091.121.151.191.221.251.291.321.351.381.421.451.481.521.551.581.621.651.681.711.751.781.811.851.881.911.941.982.012.042.082.112.142.182.212.242.272.31
For>
1.5771
0.961.201.712.85
0.190.330.450.560.660.860.961.061.161.201.251.411.501.581.671.711.751.891.972.042.122.182.322.392.452.522.582.712.772.832.852.882.933.053.103.153.193.233.353.393.433.463.503.623.653.683.703.733.833.853.873.883.894.004.014.044.064.094.134.134.144.154.164.184.194.204.204.214.224.224.224.214.20
80
1.331.692.444.19
0.250.440.620.780.921.181.331.481.621.691.751.982.122.252.372.442.502.692.812.933.043.163.353.463.573.673.773.954.054.144.194.244.324.504.594.674.754.835.005.075.145.215.285.445.505.565.615.665.825.875.915.955.996.156.186.216.246.266.416.436.446.456.456.596.596.606.626.646.696.696.746.756.75
90
1.752.233.235.66
0.310.560.780.991.181.541.751.952.142.232.332.602.792.973.143.233.313.583.753.924.084.244.484.644.794.935.085.325.465.605.665.735.866.096.226.346.456.576.796.907.007.107.207.417.507.647.727.807.968.038.168.228.288.438.488.598.638.678.818.848.938.958.979.099.109.189.189.269.289.309.329.349.35
118
2.873.725.439.62
0.490.901.271.631.972.522.873.223.553.723.884.334.654.975.285.435.586.016.316.606.897.167.577.848.118.378.629.029.279.509.629.739.96
10.3410.5610.7610.9611.1611.5311.7111.9712.1412.3012.5812.7312.9513.0813.2013.4713.5813.7813.8713.9514.1914.2514.4214.4714.5014.7214.7414.8814.8814.9015.0615.1015.1415.1615.1815.1915.1915.1715.1515.12
125
3.164.095.98
10.58
0.540.991.411.812.192.773.163.543.914.094.274.765.125.475.815.986.146.616.947.267.587.888.338.638.929.219.489.92
10.1910.4510.5810.7010.9511.3611.5911.9012.1212.3312.6612.8613.1313.3113.4813.7813.9314.1814.3214.4414.7214.8315.0515.1415.2115.4715.5315.7015.7415.7615.9915.9916.1416.1516.2016.2316.2316.2516.2616.3016.3316.2916.2816.2016.18
59
TABLE 24:Section XPA: Power Rating P(kW) for Arc of Contact 180°
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
1.01to
1.05
0.020.030.040.08
0.000.010.010.010.010.020.020.020.030.030.030.030.040.040.040.040.040.050.050.050.060.060.060.060.070.070.070.080.080.080.080.080.090.090.090.100.100.100.110.110.110.110.120.120.120.130.130.130.130.140.140.140.150.150.150.160.160.160.160.170.170.170.180.180.180.180.190.19
1.06to
1.26
0.130.180.270.54
0.020.040.060.080.090.110.130.150.170.180.190.210.230.250.270.270.280.300.320.340.360.380.400.420.440.450.470.490.510.530.540.550.570.590.610.630.640.660.680.700.720.740.760.780.800.810.830.850.870.890.910.930.950.970.981.001.021.041.061.081.101.121.141.161.171.191.211.23
1.27to
1.57
0.190.260.390.77
0.030.050.080.110.130.160.190.220.240.260.270.300.320.350.380.390.400.430.460.480.510.540.560.590.620.650.670.700.730.750.770.780.810.830.860.890.910.940.970.991.021.051.081.101.131.161.181.211.241.261.291.321.341.371.401.421.451.481.511.531.561.591.611.641.671.691.721.75
For>
1.57
0.230.310.480.94
0.030.070.100.130.160.200.230.260.300.310.330.360.400.430.460.480.490.530.560.590.630.660.690.730.760.790.820.860.890.920.940.960.991.021.051.091.121.151.191.221.251.291.321.351.381.421.451.481.521.551.581.621.651.681.711.751.781.811.851.881.911.941.982.012.042.082.112.14
200
6.137.97
11.6619.88
1.021.902.723.674.475.246.136.887.617.978.469.179.86
10.6711.3311.6611.9812.7513.3613.9614.7115.2715.8116.5317.0317.5118.1918.6319.0419.6919.8820.0620.4021.0121.3021.5722.1422.3522.5323.0523.1723.2623.7423.7723.9024.1924.1224.00
224
7.059.16
13.3722.37
1.172.183.134.225.146.037.057.918.759.169.73
10.5411.3212.2513.0013.3713.7314.6115.3015.9616.8117.4318.0118.8119.3519.8520.6221.0721.4822.1922.3722.5422.8623.5223.7723.9724.5824.7124.8025.8025.8125.8225.82
250
8.0410.4415.1624.78
1.332.483.574.825.876.898.049.029.97
10.4411.0811.9912.8813.9214.7615.1615.5616.5617.3118.0318.9819.6420.2521.1521.7022.2123.0423.4723.8524.6224.7824.9225.1725.8726.0326.1326.7526.75
140
3.764.887.13
12.56
0.641.181.692.162.623.293.764.214.664.885.095.676.106.526.937.137.337.888.278.669.039.409.92
10.2810.6210.9611.2811.8012.1112.4212.5612.7112.9913.4913.7614.1114.3614.5914.9715.1915.5015.6915.8716.2316.3916.6616.7916.9117.2317.3217.5617.6317.6817.9717.9918.1818.1818.2218.3018.3518.4918.5018.4018.3518.3218.3118.3018.25
160
4.545.988.71
15.20
0.761.412.012.593.143.974.545.165.715.986.246.867.387.968.468.718.959.54
10.0110.5511.0011.4411.9912.4112.9113.3113.6914.2214.5815.0315.2015.3715.6916.1816.4816.8817.1517.4017.8418.0618.4218.6118.7819.1819.3219.6219.7219.8020.1620.2020.4420.4420.6020.7020.8020.8520.8520.62
180
5.327.00
10.1917.61
0.891.652.463.173.864.655.326.046.687.007.318.048.659.329.90
10.1910.4711.1611.7112.3312.8513.3514.0014.4815.0515.5015.9216.5216.9217.4317.6117.7918.1318.6919.0019.4419.7119.9520.4520.6521.0321.1921.3121.7621.8422.1522.1822.1922.5622.6022.7322.6322.49
280
9.1712.0217.1727.13
1.512.824.055.496.697.849.17
10.2811.4912.0212.6113.6314.6215.8016.7217.1717.6118.7319.5420.3021.3522.0322.6623.6424.1724.6525.5525.9226.2227.0327.1327.2227.33
700950
14502850
100200300400500600700800900950
1000110012001300140014501500160017001800190020002100220023002400250026002700280028502900300031003200330034003500360037003800390040004100420043004400450046004700480049005000510052005300540055005600570058005900600061006200630064006500
TABLE 25:Section XPB/5VX: Power Rating P(kW) for Arc of Contact 180°
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
118
3.264.276.28
11.14
0.541.011.461.952.382.813.263.674.074.274.514.905.295.726.106.286.466.877.237.587.988.328.659.049.369.67
10.0510.3510.6411.0011.1411.2711.5411.8912.1412.3812.7112.9313.1413.4713.6613.8514.1514.3114.4614.7514.8815.0015.2815.3815.4615.7115.7715.8116.0616.0816.0916.3016.3516.4016.4516.4716.49
132
4.165.478.07
14.37
0.671.271.842.473.033.574.164.695.215.475.786.296.797.347.838.078.318.849.309.76
10.2810.7211.1511.6612.0712.4812.9613.3413.7214.1914.3714.5414.8815.3315.6515.9516.3916.6716.9417.3617.6017.8318.2318.4318.6218.9919.1519.2919.6319.7419.8320.1620.2220.2620.5620.5720.7020.8320.8820.9320.9520.9620.95
150
5.327.01
10.3618.39
0.851.622.353.153.874.575.326.016.687.017.418.078.719.42
10.0510.3610.6711.3511.9512.5313.2013.7614.3114.9615.4916.0016.6217.1117.5818.1718.3918.6119.0319.6120.0020.3820.9321.2721.5922.1222.4022.6723.1623.3823.5824.0424.2024.3324.7624.8524.9125.3125.3325.4625.5325.6225.7225.85
160
5.967.86
11.6120.57
0.951.812.643.534.345.135.966.737.497.868.309.049.76
10.5611.2711.6111.9612.7313.4014.0514.7915.4216.0316.7617.3517.9118.6119.1519.6620.3320.5720.8121.2721.9122.3322.7423.3523.7124.0524.6224.9125.1825.7325.9526.1426.6426.7826.8927.3627.4227.4527.6027.8527.9028.1728.2028.2328.22
180
7.249.56
14.1124.77
1.142.183.184.275.256.217.248.189.109.56
10.0910.9911.8712.8313.6814.1114.5215.4516.2617.0417.9418.6919.4220.2920.9821.6522.4823.1023.7024.4924.7725.0425.5626.3226.7927.2227.9328.3128.6529.3229.6029.8530.4730.6530.7931.3731.4431.4731.6731.7731.8432.3032.13
112
2.873.755.519.73
0.480.901.291.722.102.472.873.233.583.753.974.314.655.025.355.515.676.026.336.636.997.287.577.918.198.458.789.049.299.619.739.85
10.0810.3810.6010.8011.0911.2811.4611.7511.9212.0712.3412.4812.6112.8712.9813.0813.3213.4013.4713.7013.7513.7914.0014.0214.0214.1014.2014.2214.3414.3714.38
125
3.714.877.17
12.76
0.611.151.662.212.703.193.714.184.644.875.155.606.046.536.967.177.387.868.278.679.149.539.91
10.3510.7211.0711.5111.8512.1812.6012.7612.9113.2213.6213.9114.1814.5714.8215.0715.4315.6515.8616.2116.3916.5616.9017.0517.1817.4917.6017.6817.9818.0418.0918.3618.3818.3818.6318.6518.7018.7718.8018.80
140
4.686.169.09
16.18
0.751.422.062.783.414.034.685.285.876.166.517.097.658.278.829.099.369.96
10.4811.0011.5812.0812.5613.1313.6014.0514.6015.0315.4515.9816.1816.3716.7517.2617.6117.9518.4418.7519.0519.5119.7820.0220.4620.6820.8721.2921.4521.5921.9822.0922.1722.5322.5822.6022.9323.0323.1123.1723.2222.2423.2523.2422.20
1.01to
1.05
0.040.060.090.18
0.010.010.020.030.030.040.040.050.060.060.060.070.080.080.090.090.090.100.110.110.120.130.130.140.150.150.160.160.170.180.180.180.190.200.200.210.220.220.230.230.240.250.250.260.270.270.280.280.290.300.300.310.320.320.330.340.340.350.350.360.370.370.38
1.06to
1.26
0.290.390.591.17
0.040.080.120.160.200.250.290.330.370.390.410.450.490.530.570.590.610.650.700.740.780.820.860.900.940.981.021.061.101.151.171.191.231.271.311.351.391.431.471.511.551.601.641.681.721.761.801.841.881.921.962.002.052.092.132.172.212.252.292.332.372.412.45
1.27to
1.57
0.410.550.841.65
0.060.120.170.230.290.350.410.460.520.550.580.640.700.750.810.840.870.930.991.051.101.161.221.281.341.391.451.511.571.631.651.681.741.801.861.921.972.032.092.152.212.262.322.382.442.502.562.612.672.732.792.852.902.963.023.083.143.193.253.313.373.433.48
For>
1.57
0.500.681.032.03
0.070.140.210.280.360.430.500.570.640.680.710.780.850.931.001.031.071.141.211.281.351.421.501.571.641.711.781.851.921.992.032.062.142.212.282.352.422.492.562.632.712.782.852.922.993.063.133.203.283.353.423.493.563.633.703.773.843.923.994.064.134.204.27
NRPM
700950
14502850
100200300400500600700800900950
10001100120013001400145015001600170018001900200021002200230024002500260027002800285029003000310032003300340035003600370038003900400041004200430044004500460047004800490050005100520053005400550056005700580059006000
60
61
TABLE 25:Section XPB/5VX: Power Rating P(kW) for Arc of Contact 180°
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
224
10.0113.2119.4433.20
1.573.014.415.907.268.60
10.0111.3112.5813.2113.9515.1816.3917.7118.8719.4419.9921.2722.3423.3824.6025.5726.5027.6728.5329.3530.4531.1831.8732.9033.2033.4934.0335.0035.4435.8236.7236.9937.2038.0038.3038.5038.84
250
11.6415.3522.4937.61
1.823.505.126.868.45
10.0011.6413.1514.6215.3516.2017.6219.0020.5321.8522.4923.1324.5925.7926.9528.3529.4230.4331.7532.6733.5234.7635.5036.1837.3237.6137.8738.3539.4039.7440.4940.9441.05
315
15.6520.5529.8046.37
2.454.726.929.23
11.3613.4415.6517.6519.6020.5521.7023.5525.3327.3429.0029.8030.5832.4833.9235.2737.0338.2139.2840.9141.7943.0844.0244.5645.6246.2746.3746.43
355
18.0723.6534.02
2.835.468.00
10.6813.1415.5318.0720.3622.5723.6524.9927.0729.0631.3333.1534.0234.8636.9838.4839.8641.8242.9644.5245.6946.4047.6948.49
400
20.7627.0538.48
3.266.299.21
12.3015.1217.8620.7623.3525.8427.0528.5930.8933.0735.6337.5738.4839.3541.7043.2045.1246.6147.5849.1650.18
200
8.5011.2216.5528.75
1.342.573.755.016.167.308.509.60
10.6911.2211.8512.9013.9315.0616.0616.5517.0318.1219.0519.9621.0121.8722.7023.7124.4925.2326.2026.8927.5428.4528.7529.0429.5830.4530.9331.3632.1632.5232.8333.5733.8033.9734.6534.7434.7735.3835.5435.66
280
13.5017.7725.9342.08
2.114.065.957.969.80
11.6013.5015.2416.9417.7718.7620.3921.9623.7225.2125.9326.6428.3129.6430.9032.4933.6334.7036.1837.1137.9639.3240.0141.0841.8542.0842.2843.17
1.01to
1.05
1.06to
1.26
1.27to
1.57
For>
1.57
700950
14502850
100200300400500600700800900950
10001100120013001400145015001600170018001900200021002200230024002500260027002800285029003000310032003300340035003600370038003900400041004200430044004500
0.040.060.090.18
0.010.010.020.030.030.040.040.050.060.060.060.070.080.080.090.090.090.100.110.110.120.130.130.140.150.150.160.160.170.180.180.180.190.200.200.210.220.220.230.230.240.250.250.260.270.270.280.28
0.290.390.591.17
0.040.080.120.160.200.250.290.330.370.390.410.450.490.530.570.590.610.650.700.740.780.820.860.900.940.981.021.061.101.151.171.191.231.271.311.351.391.431.471.511.551.601.641.681.721.761.801.84
0.410.550.841.65
0.060.120.170.230.290.350.410.460.520.550.580.640.700.750.810.840.870.930.991.051.101.161.221.281.341.391.451.511.571.631.651.681.741.801.861.921.972.032.092.152.212.262.322.382.442.502.562.61
0.500.681.032.03
0.070.140.210.280.360.430.500.570.640.680.710.780.850.931.001.031.071.141.211.281.351.421.501.571.641.711.781.851.921.992.032.062.142.212.282.352.422.492.562.632.712.782.852.922.993.063.133.20
TABLE 26:Section XPC: Power Rating P(kW) for Arc of Contact 180°
Pitch diameter of the smaller pulley (mm)Additional Power(Kw) per belt for
speed ratio
250
15.8921.2130.9749.78
1.232.413.564.745.887.008.179.28
10.3911.5312.6213.7014.8315.8916.9518.0619.1020.1221.2122.2123.2024.2725.2426.1827.2328.1529.0630.0930.9731.8332.8433.6734.4835.4536.2236.9837.9338.6439.3440.2640.9141.5442.4243.0043.5644.4244.9345.4146.2446.6747.0847.8648.2148.5349.2849.5549.7850.4850.6550.7951.4551.5351.5752.1952.17
280
18.6524.8436.0655.61
1.442.824.175.576.918.239.60
10.9112.2113.5514.8316.0917.4118.6519.8821.1822.3823.5724.8426.0027.1428.3929.5030.5831.8132.8633.8935.0736.0637.0238.1839.1039.9941.1141.9542.7643.8544.6145.3446.3847.0547.6948.6949.2749.8150.7651.2351.6752.5852.9553.2754.1354.3854.5955.3955.5255.6156.3556.3556.31
180
9.3712.5318.4831.78
0.731.422.102.813.484.144.825.476.126.807.448.088.749.379.99
10.6611.2811.8912.5313.1313.7314.3714.9615.5416.1716.7417.3117.9318.4819.0319.6420.1720.7021.2921.8022.8122.9023.3923.8724.4424.9025.3625.9326.3726.8027.3527.7628.1628.6929.0729.4429.9730.3230.6631.1631.4831.7832.2832.5632.8333.3133.5633.7934.2434.4534.6435.0935.2635.4135.83
200
11.2515.0422.1237.48
0.871.702.513.364.164.965.786.577.358.168.939.70
10.4911.2512.0012.7913.5314.2615.0415.7616.4817.2417.9418.6319.3820.0620.7321.4722.1222.7723.5024.1324.7525.4626.0626.6527.3527.9228.4829.1629.7030.2230.8831.3831.8732.5232.9833.4334.0634.4834.8935.9536.3436.7136.8337.1737.4838.0538.3438.6139.1639.4039.6240.1440.3340.4940.9941.1241.2441.71
224
13.4918.0126.4343.75
1.042.033.004.035.005.956.937.878.819.78
10.7111.6212.5813.4914.3815.3316.2117.0918.0118.8719.7220.6421.4722.2923.1923.9924.7825.6626.4327.1828.0428.7729.4930.3431.0331.7132.5333.1833.8134.6135.2135.8036.5837.1337.6738.4238.9239.4040.1440.5941.0141.7142.1042.4643.1343.4543.7544.4044.6644.8945.5045.6945.8546.4346.5546.6347.1947.2347.2447.75
315
21.8429.0241.77
1.693.314.906.538.109.65
11.2612.7914.3115.8817.3718.8520.3921.8423.2624.7826.1727.5429.0230.3531.6533.1034.3635.5936.9938.1739.3140.6841.7742.8244.1445.1346.0847.3648.2449.0850.3051.0751.7952.9553.5954.1855.2955.8056.2557.2957.6557.9658.9359.1459.2960.1860.2360.8061.04
NRPM
700950
14502850
50100150200250300350400450500550600650700750800850900950
100010501100115012001250130013501400145015001550160016501700175018001850190019502000205021002150220022502300235024002450250025502600265027002750280028502900295030003050310031503200325033003350340034503500
1.01to
1.05
0.080.100.160.31
0.010.010.020.020.030.030.040.040.050.050.060.070.070.080.080.090.090.100.100.110.110.120.120.130.140.140.150.150.160.160.170.170.180.180.190.200.200.210.210.220.220.230.230.240.240.250.260.260.270.270.280.280.290.290.300.300.310.310.320.330.330.340.340.350.350.360.360.370.370.38
1.06to
1.26
0.490.671.022.00
0.040.070.110.140.180.210.250.280.320.350.390.420.460.490.530.560.600.630.670.700.740.770.810.840.880.910.950.981.021.051.091.121.161.191.231.301.331.371.401.441.471.511.541.581.611.651.681.721.751.791.821.861.891.931.962.002.042.062.072.112.142.182.212.252.282.322.352.392.422.46
1.27to
1.57
0.700.951.442.84
0.050.100.150.200.250.300.350.400.450.500.550.600.650.700.750.800.850.900.951.001.051.101.151.201.251.291.341.391.441.491.541.591.641.691.741.791.841.891.941.992.042.092.142.192.242.292.342.392.442.492.542.592.642.692.742.792.842.892.942.993.043.093.143.193.243.293.343.393.443.49
For>
1.57
0.851.161.773.48
0.060.120.180.240.310.370.430.490.550.610.670.730.790.850.920.981.041.101.161.221.281.341.401.471.531.591.651.711.771.831.891.952.022.082.142.202.262.322.382.442.502.562.632.692.752.812.872.932.993.053.113.183.243.303.363.423.483.543.603.663.723.793.853.913.974.034.094.154.214.27
62
335
23.6431.3744.91
1.833.595.317.088.78
10.4712.2013.8615.5017.2118.8220.4222.0823.6425.1726.8128.3029.7731.3732.7934.1835.7337.0638.3639.8841.1242.3243.7844.9146.0047.4148.4249.3950.7451.6352.4653.7554.5055.1956.4057.0057.5358.6859.1259.4960.5660.8261.5762.0062.08
TABLE 26: Section XPC: Power Rating P(kW) for Arc of Contact 180°
NRPM
Pitch diameter of the smaller pulley (mm)Additional Power(KW) per belt for
speed ratio
400
29.4138.8054.42
2.284.476.628.86
10.9913.0915.2617.3319.3721.4823.4725.4327.5129.4131.2833.2935.0936.8438.8040.4742.1043.9945.5247.0048.8250.1951.5053.2354.4255.5557.1958.1959.1060.6561.4362.1263.5764.1165.1865.8966.1867.0867.5767.5968.31
500
37.9949.5766.69
2.995.878.69
11.5814.3517.0919.9122.5825.2027.9430.4832.9535.6237.9940.2942.8545.0247.1149.5751.5053.3455.6757.3358.8961.0762.4264.2465.6866.6968.2869.4270.0471.3872.1972.39
630
48.4962.0678.01
3.897.63
11.3115.0918.6822.2125.8629.2732.5936.1039.2542.3045.6648.4951.1954.3856.8259.6362.0664.0466.5368.5569.9971.2173.6674.4976.2177.2178.01
710
54.5468.76
4.458.73
12.9317.2421.3325.3329.4733.3037.0140.9744.4547.7751.5254.5457.9060.8663.3366.3168.7670.5673.0974.9575.9978.0079.17
355
25.4333.6947.95
1.973.865.727.639.46
11.2813.1514.9416.7018.5320.2621.9723.7625.4327.0728.8230.4131.9733.6935.1936.6638.3239.7241.0942.7043.9945.2446.7947.9549.0750.5551.5752.5553.9754.8455.6657.0057.7158.3559.6160.1461.1161.7862.1262.96
450
33.7544.3060.95
2.645.187.67
10.2212.6715.0917.5919.9622.3024.7327.0029.2331.6033.7535.8438.1440.1442.0844.3046.1347.8850.0051.6353.1755.1956.5957.9059.8060.9562.5263.7764.6466.0367.0367.5968.7869.5269.7570.7271.17
560
42.9455.5672.42
3.406.679.89
13.2116.3719.4722.6725.6928.6431.7534.5937.3440.3342.9445.4548.3150.6452.8555.5657.5659.9361.9763.5965.7067.3968.5870.4171.7272.4272.94
1.01to
1.05
0.080.100.160.31
0.010.010.020.020.030.030.040.040.050.050.060.070.070.080.080.090.090.100.100.110.110.120.120.130.140.140.150.150.160.160.170.170.180.180.190.200.200.210.210.220.220.230.230.240.24
0.490.671.022.00
0.040.070.110.140.180.210.250.280.320.350.390.420.460.490.530.560.600.630.670.700.740.770.810.840.880.910.950.981.021.051.091.121.161.191.231.301.331.371.401.441.471.511.541.581.61
1.06to
1.26
1.27to
1.57
0.700.951.442.84
0.050.100.150.200.250.300.350.400.450.500.550.600.650.700.750.800.850.900.951.001.051.101.151.201.251.291.341.391.441.491.541.591.641.691.741.791.841.891.941.992.042.092.142.192.24
For>
1.57
0.851.161.773.48
0.060.120.180.240.310.370.430.490.550.610.670.730.790.850.920.981.041.101.161.221.281.341.401.471.531.591.651.711.771.831.891.952.022.082.142.202.262.322.382.442.502.562.632.692.75
700950
14502850
50100150200250300350400450500550600650700750800850900950
10001050110011501200125013001350140014501500155016001650170017501800185019001950200020502100215022002250
63
64
Table 27: Correction Factors (Fc) Arc of Contact
0.000.050.100.150.200.250.300.350.400.450.500.550.600.650.700.750.800.850.900.951.001.051.101.151.201.251.301.351.401.451.501.551.60
Arc of Contacton Smaller Pulley
(degrees)
Correction Factori.e. Proportion of
0180 Rating
D-dC
180º177º174º171º168º165º162º160º156º153º150º147º144º141º139º136º133º130º126º123º119º115º112º109º106º103º100º
96º92º88º84º80º77º
1.001.001.001.000.990.990.990.990.990.980.980.980.980.970.970.970.960.960.960.950.940.940.930.930.920.910.910.900.880.870.860.840.83
Table 28: (Fd)Pitch Length Correction Factors
65
Section: Z/ZX
422447472497522552582622652692732822847887922947997
1022108211421172120212721342142215221622
Fd
0.860.870.880.890.900.920.930.940.950.960.981.001.011.021.021.031.041.051.061.071.081.081.101.111.121.141.15
PitchLength (mm)
900990
104011001140122012901360144015401640174018401940204021602280240025902690284030403190339035903790404042904540479050405340564060406340
0.810.830.840.850.850.870.880.890.900.920.930.940.950.970.980.991.001.011.031.041.051.061.071.091.101.111.131.141.151.171.181.191.201.221.23
Section: B/BX
660740780830880930980
10301090115012101280135014301530163017301830193020302150227023902530268028303030318033803780403045305030
0.800.820.830.850.860.870.880.890.900.910.920.940.950.960.970.991.001.011.021.031.051.061.071.081.101.111.121.141.151.171.191.221.24
Section: A/AX Section: C/CX
Fd
145815581658185819582058217822982418255827082858305832083608380840584308455848085058535856586058635867587158755880589058
10058
0.800.810.830.850.860.870.880.890.900.920.93 0.940.950.960.991.001.011.031.041.051.061.071.091.101.111.131.141.151.171.191.22
PitchLength(mm)
FdPitch
Length(mm)
FdPitch
Length(mm)
4830508053805680608063806780718075808080858090809580
100801068011280118801258013280140801508016080
0.920.930.940.950.960.970.991.001.011.031.041.051.061.071.091.101.111.121.141.151.171.18
Section: E
FdPitch
Length(mm)
32253425362538254075432545754825507553755675607563756775717575758075857590759575
100751067511275118751257513275140751507516075
0.860.870.880.890.910.920.930.940.950.960.980.991.001.011.031.041.051.061.081.091.101.111.131.141.151.161.181.191.21
Section: D
FdPitch
Length (mm)
635675715755805855905955
100510651125118512551325140515051605170518051905200521252245236525052655280530053155335535553755400542554505
0.830.840.850.860.870.880.890.900.910.920.930.940.950.960.980.991.001.011.021.031.041.051.061.071.081.091.101.111.121.131.151.161.171.181.19
Section: SPZ/XPZ
FdPitch
Length(mm)
66
Table 28: Power Correction Factors for Belt Pitch Length (Fd)
Section: SPA/XPA
80585590595510051065112511851255132514051505160517051805190520052125224523652505265528053005315533553555375540054255450547555005530556056005
Fd
0.810.820.830.840.850.860.860.870.880.890.900.910.920.930.940.950.960.970.980.991.001.011.021.031.041.051.061.071.081.091.101.111.121.131.141.15
PitchLength(mm)
Section: SPB/XPB
125513251405150516051705180519052005212522452365250526552805300531553355355537554005425545054705500553055605600563056705710575058005850590059505
10000
Fd
0.830.840.850.860.870.880.890.900.910.920.930.930.940.950.960.970.980.991.001.011.021.031.041.041.051.061.071.081.091.101.111.121.131.141.151.161.17
PitchLength(mm)
Section: SPC/XPC
20052125224523652505265528053005315533553555375540054255450547555005530556056005630567057105750580058505900595051000510605112051180512505132051400515005
Fd
0.850.860.860.870.880.890.900.910.910.920.930.940.950.960.970.980.980.991.001.011.021.031.041.041.051.061.071.081.091.091.101.111.121.131.141.15
PitchLength(mm)
Section: 3V/3VX
686724775813864914965
10291092115612191283135914351537161317151816191820452172229924262553270528583010318833663569382340774331458548395093
OutsideLength(mm)
Belt Reference Fd
2702853053203403603804054304554805055355656056356757157558058559059551005106511251185125513251405150516051705180519052005
3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V3V
0.840.850.860.870.880.900.910.920.930.940.950.960.970.980.991.001.011.021.031.041.051.071.071.081.091.111.111.131.141.151.161.171.181.191.201.21
OutsideLength(mm)
Belt Reference Fd
Section: 5V/5VX
1283135914351537161317151816191820452172229924262553270528583010318833663569
OutsideLength(mm)
Belt Reference Fd
505535565605635675715755805855905955
1005106511251185125513251405
5V5V5V5V5V5V5V5V5V5V5V5V5V5V5V5V5V5V5V
0.840.850.850.870.870.880.890.900.910.920.930.940.950.960.960.970.980.991.00
3823407743314585483950935398570260076363674471257633801485229030953810173
150516051705180519052005212522452365250526552805300531553355355537554005
5V5V5V5V5V5V5V5V5V5V5V5V5V5V5V5V5V5V
1.011.021.031.041.051.061.071.071.081.091.101.111.121.131.141.151.161.17
Section: 8V
OutsideLength(mm)
Belt Reference Fd
25532705285830103188336635693823407743314585483950935398570260076363
10051065112511851255132514051505160517051805190520052125224523652505
8V8V8V8V8V8V8V8V8V8V8V8V8V8V8V8V8V
0.870.870.880.890.900.910.920.930.930.940.950.960.970.980.980.991.00
OutsideLength(mm)
Belt Reference Fd
6744712576338014852290309538
101731080811443120781271313475142371525316015
2655280530053155335535553755400542554505475550055305560560056305
8V8V8V8V8V8V8V8V8V8V8V8V8V8V8V8V
1.011.021.031.031.041.051.061.071.081.090.090.100.111.121.131.13
Installation Allowance y (mm)OutsideLength(mm)
152025253545557085
110135150190
15152020202020
------
Length Designation3V/3VX 5V/5VX 8V
--
2020202025303535354545
----
404040454550506060
Min Take-upAllowance
x (mm)
67
Table 29: Installation and Take-up Allowance
555
10152025253545557085
110135150190
Installation Allowance y (mm)Min. Take-upAllowance
x (mm)
Pitch Length(mm)
--
101010151520
---------
8
--
101015152020202020
------
Z/ZX
---
1015152020202020202025
---
A/AX
---
1015152020202020252525304040
B/BX
-----
202025252530354040405050
20
-----
202525303030354045455555
C/CX
------
2530303030354045455555
25
-------
35353535404545506060
D
--------
404040455050556565
E
Installation Allowance y (mm)OutsideLength(mm)
25253545557085
110135150190
3535353540455050
---
Length Designation3V 5V 8V
4040404045505555607085
--
80808585959595
105120
Min Take-upAllowance
x (mm)
25253545557085
110135150190
Installation Allowance y (mm)Min Take-upAllowance
x (mm)
3030303030354545506070
3535353540455555607085
Pitch Length(mm)
A/HA B/HB C/HC D/HD
--
505055606565758595
--
85859090
100100100110125
68
Table 29: Installation and Take-up Allowance - Banded Belts
Installation Allowance y (mm)
25253545557085
110135150190
3535353540455050
---
Pitch LengthSPZ SPA/SPB
4040404045505555607085
Min Take-upAllowance
x (mm)
---
808585959595
105120
SPC
Note: For Raw Edge the same x/y values to be referred.Banded Belts,
Idlers / Tension PulleysIdlers are basically no loaded wheels that are used in a drive system under the following conditions.
1) Fixed centre distance, so as to provide the required installation & take-up allowances.
2) On long & unsupported spans, as dampers & guides where the chances of vibrations are more.
3) As outside idlers when the arc of contact on one of the drive pulleys is too low. Also helps in reducing the slippage & the need to increase the number of required belts.
4) As guide idlers where the drive system pulleys are not in the same plane.
5) To guide the belts past obstructions.
6) As pneumatically, or spring loaded idlers to maintain the constant tension in the drive.
7) As clutches where the driven pulley can be engaged or disengaged.
The usage of idlers should be as far as possible avoided as they generate additional bending stresses in the belt, leading to drastic reduction in the belt life. However, under the conditions listed above where it may be absolutely essential to use the idlers the
following criteria must be observed when designing drive.
1. Idler configuration
2. Position of idler in the belt span
3. Shape of idler
4. Allowance for idler travel
5. Correction of power rating
Idler Configuration
Principally idlers can be used internally or externally depending on the drive conditions. However, unless the drive requirement calls for an outside idler, possibly inside idler should be used. The inside idler can be either flat or grooved pulley depending on the type of belt used in the drive system. It is suggested that the flat inside idler be used only when classical section is used while in all other cases a grooved pulley be used. However the usage of inside idler reduces the arc of contact on the loaded wheels and with it consequently the arc of contact correction factor. Hence when designing the drive with inside idler the arc of contact correction factor should be selected for the position of the idler at the point of maximum belt stretch.
Refer to table on
Outside idlers should always be flat one because they run on the back of the belt Outside idlers invariably increase the arc of contact. Care should however be taken to see that the maximum belt stretch is achieved and the contact with the opposite side of the span is avoided. The reverse bending caused because of the usage of the outside idler reduces the life of the belt.
Page 70
We suggest the usage of special construction PIX belts on these drives. Please contact our Technical Services Dept.
Idler PositioningPractice has shown that the placement of idler, whether it is an inside idler or an outside idler, should be on the slack side of the drive. This helps in significant reduction in the tension idler force.
In the case of inside idlers, grooved pulley can be placed anywhere in the entire span length on the slack side of the drive. However to obtain the best from your drive it is suggested that wherever possible the arc of contact on both the drive pulleys should be brought as close as possible to each other when the idler reaches its limit position.
Flat pulleys, used as inside or outside idlers are to be placed as far as possible away from the grooved pulley on which the belt runs next. This will avoid any alignment errors between the idler & the pulley & the resultant sideways movement of the belts on the pulley. Refer figures below.
On drives where inside idler are used to break long spans, it is suggested that a grooved pulley be used because the usage of flat idler can result in transverse vibrations leading to the belt turnover.
Minimum diameter recommended for idlers.Inside Idler > smallest loaded pulley in the drive system or smallest permissible pulley diameter for section used.
Outside Idler > 1.5 times the smallest pulley in the drive system.
Inside Idler
Outside Idler
69
Driver pulley Idler pulley(flat) Driven pulley
Sl k ideac s
Tight side
Driver pulley Idler pulley(flat or grooved)
Driven pulley
Slack si ed
g Ti ht side
Drive Calculations: The calculations for the length required is same as for the drive with two pulleys. However the following details are required to be noted when designing the same.
1) The required belt length is calculated using the standard procedure. (Lp)
2) If the belt has to be used with fixed centre distance, then double the installation allowance be added to the pitch length calculated above, i.e., Lp = Lp + 2y1
where, Lp is the length considering1
installation allowances.
Lp is the pitch length calculated in step 1. Y is the installation allowance (see
3) The next largest standard length Lp (standard) is to be chosen near to Lp , however care be taken 1
to check that the belt can be adequately tensioned with the idler in the outermost position. Length of the belt for idler in the end position can be calculated as follows:
Ld ( f ) = Lp (standard) + 2x
where, Ld (f) is the length for idler end position that is after max. belt stretch (final). Lp (standard) is the standard length selected as above.
X is the take-up allowance (see
table no.29, page 67-68)
table no.29, page 67-68)
Number of belts required:The usage of idlers invariably decreases the service life of belts. To avoid a reduction in the belt service life, idler correction factor is also to be considered while calculating the number of belts required.
Idler Design:Grooved idlers should have the standard groove dimensions for optimum results. In case of long spans & the drives with severe vibrations, however, deep grooved pulleys are recommended. Flat pulleys on the other hand should always be cylindrical & not crowned. Wherever idlers are used as belt guides, it is suggested that a flanged pulley be used with sharp corners to avoid the running over of the belt over the flange causing turnover.
The distance between two flanges is governed by the the following formula :
b = b2 + mwhere b = required face width (mm)
b2 = face width of grooved pulley (mm)m = additional value (mm)
Fixed drive C.D.
After max. Belt stretch
With standard
belt length
SectionSPZ / XPZ / 3V / 3VX / Z / ZXSPA / XPA / A / AXSPB / XPB / 5V / 5VX / B / BXSPC / XPC / C / CX8V / 8VXDE
m (mm)15202530354045
Arc of contact correction factor c1
7580859095
100105110115125130
0.820.840.860.880.900.910.920.930.940.950.96
140145150155160165170175180185190
0.960.970.970.980.980.990.990.991.001.001.00
195200205210215220225230240250
1.011.011.011.011.011.011.011.011.021.02
Angle (degree) Angle (degree)c1 c1Angle (degree) c1
No. of idlers
0
1
2
3
c4
1.00
0.91
0.86
0.81
No. of required belts :
N = Pxc2
pxc1xc3xc4
N = No. of required belts:
P = Power in KW
p = Power rating of the belt
c1 = From above table
c2 = Service factor
c3 = Belt length factor
c4 = Idler correction factor as above
70
V-Flat DrivesThe V - flat drive comprises of one grooved pulley & one flat pulley. V - flat drives are generally used where, under certain conditions intermittent loading & large moment of inertia have to be considered. The conversion from a flat drive to a V - flat drive is a relatively low cost exercise because of the presence of the existing flat pulley.
Pre-requisites for a V-flat drive:1) The smaller pulley should always be V - grooved pulley.
2) When using single belts, only classical belts are to be used because of higher top width to height ratio (1.6:1).
3) Wedge belts should never be used on these drives because of their lower top width to height ratio ( 1.2 : 1), which makes these belts more vulnerable to turning on their sides.
4) PIX banded belts are more justifiable on these drives. The reinforced band over the belts provides the required lateral rigidity preventing the belt from turning over even under the extreme adverse conditions.
5) V-flat drives are economical when K lies between 0.5 & 1.15,
Da = outside diameter of flat pulley (mm)dd = pitch diameter of grooved pulley (mm)da = outside diameter of grooved pulley (mm)a = centre distance (mm)
The ideal drive is achieved when K = 0.85
The design procedure for V - flat drive is similar to that ofnormal V belt drives, except that the arc of contact correction factor has to be modified.
Classical V-beltsSection Z A B C D E
Dz 7 10 13 18 23 25
Banded beltsSection SPZ/3V SPA SPB/5V SPC 8V
Dz 13 18 23 36 41
Calculation of Pitch Length2 (D + D - d )a z dLp = 2a + 1.57 (d + D + D ) +d a z 4a
Based on above, the following recommendations are made
to obtain the best from your V-flat drive.
Calculation of outside length for banded belt:
where K = (Da - dd /da)a
c1K= (D - d / d )a d a
aB
(degree)
0.000.070.150.220.290.350.400.450.500.570.640.700.750.800.850.921.001.071.151.211.301.361.45
1801761701671631601561531501461431401371341301251201151101061009690
0.750.760.770.790.790.800.810.810.820.830.840.850.850.860.860.840.820.800.780.770.730.720.70
La = 2a + 1.57 (d + D +D ) +a a z
(D + D - d )a z a
2
4a
71
r= Da
dd
³ 3
Banded BeltsV-Belts
Speed Ratio
Drive Centre Distance
r = Da
da
³ 3
a = D -da d
0.85a =
D - da a
0.85
“K” - Factor K= D -da d
aK= D - da a
a
a
dd / da
Da
q 360- q
Dimensions of Standard V-grooved Pulley
The maximum distance 'L' between the outside edges of the pulley, i.e. the face width is equal to (x-1) e + 2f (where x
is the number grooves).
Note:1) See figure for symbol.
2) The tolerance on dimension apply to the distance between the centre of any two grooves whether adjacent or not.
3) It is recommended that the tolerance on dimension should be taken into account in the alignment of the pulleys.
4) When the pulleys are to be used for V-Belts Z, A, B, C only, dimension 'h' may be reduced by 20 %.
5) Only above dimension pulleys should be used for Banded belts except for 'A' section, where e = 15.9 mm. The tolerance for side wobble and for run out (eccentricity), in mm per millimetre of pulley diameter shall be as follows :
Pulley diameter < 500 mm ± 0.001 mm500 mm < Pulley diameter < 1500 mm ± 0.0015 mmPulley diameter > 1500 mm ± 0.002 mm
Multi Grooved Pulley Cross Section
72
L
f
Wp
g
b
hdpOutside
Diameter
e
CrossSectionSymbol
GroovePitchWidth(Wp)
MinimumDistance From
Outside DiameterTo Pitch
Diameter (b) mm
MinimumGroove DepthBelow Pitch
Diameter(Note 4) (h) mm
Centre to Centre ofGroove
(see Note 2)(e) mm
Edge of Pulleyto 1st Groove
Centre(see Note 3)
(f) mm
PitchDiameter
(dp)mm
MinimumTop Widthof Groove
(g)mm
GrooveAngle
( )mm
Z, SPZ,ZX, XPZ
A, SPA,AX, XPA
B, SPB,
BX, XPB
C, SPC,CX, XPC
D
E
3V, 3VX
5V, 5VX
8V, 8VX
8.5
11.0
14.0
19.0
27.0
32.0
2.0
2.75
3.5
4.8
8.1
9.6
0.64
1.27
2.54
9.0
11.0
14.0
19.0
19.9
23.4
8.0
13.7
22.6
12 ± 0.3
15 ± 0.3
19 ± 0.4
25.5 ± 0.5
37 ± 0.6
44.5 ± 0.7
10.3 ± 0.4
17.5 ± 0.4
28.6 ± 0.4
8.0 ± 1.0
10.0 + 2.0- 1.0
12.5 + 2.0- 1.0
17.0 + 2.0- 1.0
24.0 + 3.0- 1.0
29.0 + 4.0- 1.0
8.7 + 2.0- 0.8
12.7 + 3.0
- 1.0
19.0 + 6.0-1.5
Up to 80Over 80
Up to 118Over 118
Up to 190Over 190
Up to 315Over 315
Up to 475475 & over
Up to 610Over 610
Up to 8888 to 152
152 to 305above 305
Up to 254254 to 406above 406
Up to 406 406 to 569
34 ± 0.538 ± 0.5
34 ± 0.538 ± 0.5
34 ± 0.538 ± 0.5
34 ± 0.538 ± 0.5
36 ± 0.538 ± 0.5
36 ± 0.538 ± 0.5
36 ± 0.538 ± 0.540 ± 0.542 ± 0.5
38 ± 0.540 ± 0.542 ± 0.5
38 ± 0.540 ± 0.5
9.79.9
12.712.9
16.116.4
21.922.3
32.332.6
38.839.3
8.9
15.2
25.4
Service Equipments:
PIX Pulley GaugesPIX Pulley Gauges are specially designed for checking the profiles of the grooves of various conventional and dual sections.
Groove Checking Procedure1. Identify the pulley gauge to be used according to section and its diameter.2 . Measure the groove by inserting the gauge. Identify if any clearance lies
between the side wall of groove & the gauge.3. Measure the present clearance using the Feeler Gauge.
PIX Length FinderFor checking the length where size on the belts are not clearly visible. PIX has two types of Length finders viz. Conventional & Poly-V
Length Measurement Procedure1. Place the belt on the upper half of pulley which
is fixed.2. Slide down the lower half of pulley with the belt
along the scale till the belt gets sufficiently stretched.
3. Marker at lower position of the bottom half will show the reading in mm / inches. Note down the reading and compare this value with the belt size mentioned on the belt.
length finders. The maximum belt length which can be measured with above length finders is 120 inches.
73
34
38
74
CENTRE DISTANCE 'C '
SPAN
DEFLECTION
STRENGTH EDGE
PIX V-Belt Tension Tester
General Guidelines for Tensioning:Measurement of V-belts: Proper belt tension is vital to the operation of the drive and the life of V-Belts. To ensure optimum V-belt drive operation, it is recommended to check the tension in the belts by measuring the deflection force value (N) with the help of a tension measuring device.
The belt tension in most drives can be checked with adequate reliability by means of PIX V-Belts Tension Tester.
Tension Measurement Procedure
1. Measure the span length of the belt in mm. (Ref. sketch).
2. Tie a string / thread on the two pulleys along the length of belts and mark centre of the span on the belt.
3. Calculate 1.5% of the span (say x) for belt length less than 1000 mm & 1.0% of the span for belt length more than 1000 mm. Adjust lower ring on the tension tester on millimetre scale to coincide, "x" mm with the lower side of the ring. Adjust lower side of the upper ring at 0.00 N.
4. Place tension tester at the centre of the span of the belt. Apply force with the help of tension tester perpendicular to the span till the lower surface of the lower ring touches the string.
5. Read the deflection force value (N) on the Newton scale by taking reading at the lower side of the upper ring.
6. Compare the deflection force value (N) with the values given in the table 'A'. The deflection force value (N) should lie between the min. and max. values given in the table 'A'.
7. Deflection force less than minimum recommended value in the range indicates an under-tensioned drive & deflection force higher than maximum recommended value indicates an over-tensioned drive.
Technical Data:Range of Measurement:Measuring Precision:
Measuring Method:Voltage Supply:Power Consumption:Display:Working Temperature:Storage Temperature:
10 - 600 Hz10 - 400 Hz ± 1%400 - 600 Hz ± 2%± 1 digitNon contact acoustic with background noise suppresssion2*1, 5V Mignon (LR06) AA< 25mALCD 2 lines of 8 characters
0 00 to +50 C0-20 to +60 C
PIX has introduced Digital Tension Meter for the measurement of belt-tension in a drive. This will help into the correct tensioning of drive resulting into the optimisation of power transmission factor.
This digital version of tension meter will help in reading the exact value of tension on the belts, thus helping the user’s to correct the tension of the drive. This equipment works on frequency measurement phenomenon.Advantages:• Non-contact measurement with repeated accuracy• Large range of measurement from 10Hz to 600Hz• High level of accuracy• Evaluation of the quality of measurement results• Suppression of background noises• Universal measuring head for convenient measurement• Detachable measuring sensor for narrow spaces
PIX Digital Tension Meter
Important:1) For new belts the deflection force value (N) should
be kept at maximum.2) Maximum deflection force value (N) is
recommended for pulsating & shock loads.3) After approximately 24 hrs. of running, check the
belt tension and adjust if necessary.
CrossSection
Smaller PulleyDiameter
(mm)
Condition 1Deflection @ 1.0% of span, if span
length is more than 1000 mm
Condition 2Deflection @ 1.5% of span, if span
length is less than 1000 mm
Required deflection force F atthe centre of span for belt speed
Required deflection force F atthe centre of span for belt speed
0 m/s to10 m/s
Range (N)
10 m/s to20 m/s
Range (N)
20 m/s to30 m/s
Range (N)
0 m/s to10 m/s
Range (N)
10 m/s to20 m/s
Range (N)
20 m/s to30 m/s
Range (N)
WR
AP
PE
D
BE
LT
S 4-57-8
8-1111-1613-2121-3227-4141-6156-83
83-12097-145
145-213
5-78-9
9-1313-1917-2525-3935-5151-77
69-101101-153120-183183-273
5-88-12
11-1616-2421-3232-4741-6161-93
83-120120-179144-213213-320
3-45-66-8
8-1210-1616-2420-3131-4642-6262-90
73-109109-160
4-56-7
7-1010-1413-1919-2926-3838-5852-76
76-11590-137
137-205
4-66-9
8-1212-1816-2424-3531-4646-7062-90
90-134108-160160-240
50-100100 & above71-140140 & above112-200200 & above180-400400 & above315-600600 & above450-915915 & above
Z
A
B
C
D
E
CLASSICAL BELTS
Deflection Force Required for Measuring Tension in V-Belt Drives
WEDGE / NARROW BELTS
8-1212-1913-1919-2924-3636-4943-6969-9375-97
97-151
9-1313-2116-2323-3527-4343-5551-77
77-10191-120
120-187
11-1616-2319-2727-4133-4848-6161-88
88-113108-143143-223
6-99-14
10-1414-2218-2727-3732-5252-7056-73
73-113
7-1010-1612-1717-2620-3232-4138-5858-7668-90
90-140
8-1212-1714-2020-3125-3636-4646-6666-85
81-107107-167
63-9595 & above90-140140 & above140-265265 & above224-355355 & above 335-520520 & above
SPZ / 3V
SPA
SPB / 5V
SPC
8V
5-68-9
9-1212-1815-2525-3731-4848-71
6-89-11
11-1515-2120-2929-4440-5858-89
6-99-14
12-1818-2825-3737-5448-71
71-107
3-56-77-9
9-1412-1818-2823-3636-53
5-67-8
8-1212-1615-2222-3330-4444-67
5-77-109-14
14-2118-2828-4036-5353-81
40-100100 & above63-140140 & above90-200200 & above140-400400 & above
ZX
AX
BX
CX
CLASSICAL V-BELTS
9-1414-2115-2121-3428-4141-5749-80
80-107
11-1515-2518-2626-4031-4949-6358-89
89-117
12-1818-2621-3131-4838-5555-71
71-101101-130
7-1010-1612-1616-2521-3131-4337-6060-81
8-1212-1814-2020-3023-3737-4744-6767-87
9-1414-2016-2323-3629-4141-5353-7676-98
56-9595 & above71-140140 & above112-265265 & above180-355355 & above
XPZ / 3VX
XPA
XPB / 5VX
XPC
WEDGE / NARROW V-BELTS
CU
T
ED
GE
B
EL
TS
75
Deflection (mm)
NEWTONS
Drive design software
76
PIX drive design software can offer drive solutions for wedge, narrow and classical V belts in wrap and cut edge constructions. The main interface is divided in two parts namely:
Calculations: There is a provision for calculating parameters viz. centre distance, pitch length, tensioning and power rating with minimum required Input values.
PIX Wrapped and Cut edge Belts: The compact screen has a provision for required input values to offer detailed calculations for new drive design and existing drive.
1. Section selection: The user has a choice to select from various sections or keep it unmarked to provide the scope for software to offer results for eligible sections.
2. Design parameters: Design ID – The software provides an unique identity for each drive Calculations. Also we can choose from the various records saved earlier. There are two more fields which are not mandatory.
2. Existing drive parameters: This field is for verification of requirements of an existing drive.
3 Design conditions: It has provision for entering power, service factor and centre distance.
4. Driver pulley and driven pulley: The motor and follower rpm can be entered. The diameters can either be entered or selected from the range available.
5. Special Conditions: This field is to mention working temperature and conditions to offer suitable special construction belts.
6. Idler: The user can specify the idler position.
The recorded input data sheet can be saved and retrieved from the field “Design ID”. The next button is to go for detailed calculation sheet. The type of customer can be selected from the drop down window and a specific record number can be allocated to get in final print sheet for easy identification. Also, there is a provision to get the center distance for user specified pitch length. The desired section results can be printed by ticking it. The main menu of the software in the beginning is shown as below.
77
Drive Design Report
Date: Report No.:
Name of Customer: Type of Customer:
Design Input:
Sr. No. Design Input Parameter123456789
10
Motor PowerDriver SpeedDriven SpeedDiameter of the Driver PulleyDiameter of the Driven PulleyNominal Centre DistanceTheoretical Pitch LengthDrive ApplicationSpecial ConditionsIdler
Design Output:
Sr. No. Design Input Parameter123456789
1011121314171819
Calculation for First installations:20212223
Calculation for First installations:24252627
Design Power (Pd)Service Factor (K)Speed Ratio (Sr)Linear Speed (V)Belt Section SelectedPitch Length of Standard Belt (Lp)Centre distance with standard Belts (CD)Power Rating (P)Arc of Contact Correction Factor (Fc)Pitch Length Correction Factor (Fc)Calculated no of belts (N)No. of belts Taken (N)Centre Distance for Belt StretchCentre Distance for Belt InstallationDynamic Shaft LoadingBelt ReferencePulley Section
Static Belt TensionStatic Shaft LoadingBelt Deflection at the center of span lengthDeflection force required for measuring tension
Static Belt TensionStatic Shaft LoadingBelt Deflection at the center of span lengthDeflection force required for measuring tension
Values Units-------
kWrpmrpmmmmmmmmm
---
Values Units-----------------
kW--
m/s-
mmmmkW
----
mmmm
Newton--
----
NewtonNewton
mmNewton
----
NewtonNewton
mmNewton
Remarks:
The final output shall be available in the form of following report.
Maintenance of V-Belts
General guidelines for tensioning of
V-Belt:
1) Ideal tension is the lowest tension at which the
belt will not slip under peak load conditions.
2) Check tension frequently during the first two
days of operation.
3) Over tensioning shortens belt and bearing life.
4) Keep belts free from foreign material which may
cause slip.
5) Make V-drive inspection on a periodic basis.
6) Adjust tension when slipping. Never apply belt
dressing as this will damage the belt and cause
early failure.
Idlers:An idler used in V-Belt drives is a wheel that is not
'loaded' and may be grooved/flat pulley used for
various reasons such as:
a) To provide take up for fixed centre drives.
b) To clear obstruction.
c) To break up long spans where belt vibrations
may be a problem.
d. To maintain tension to act as a clutching device.
Note: Diameter of outside idler should be one and half
times that of smaller pulley diameter or more
and diameter of inside idler should be
approximately same as that of smaller pulley
diameter or more.
Installation & take up Allowance:The limiting values for adjustment of centres for
the two transmissions pulley shall be as follows:
Lower Limiting Value: Nominal centre distance minus 1.5% Lp
Higher Limiting Value: Nominal centre distance plus 3% Lp. Where Lp
is the Pitch Length of the belt.
Storage of V-belts:Maintaining the proper storage conditions at the
users place as well as at the manufacturers
place is an important parameter which requires
due attention from the concerned. Under
favourable storage conditions, PIX belts retain their
initial serviceability and dimensions. Good storage
facilities and practices will allow the users to
achieve the best value from belts.
PIX V-belt should be stored in a cool & dry place
with no direct sunlight. When stacked on shelves
the stacks should be small enough to avoid excess
weight on the bottom belts which may cause
distortion. When stored in containers the container
size & contents should be sufficiently limited to
avoid distortion.
Don'ts:Do not store the belts on floor unless a suitable
container is provided. They may be exposed to
moisture.
Do not store belts near windows which may permit
exposure to sunlight or moisture. Do not store belts
near radiators or heater.
Do not store belts in the vicinity of transformers &
electrical motors. these devices may generate
ozone. Do not store belts in heavy bent condition.
Methods of Storage:The common method of storing the v-belts is to
hang them in crescent shaped pegs or pin racks.
Long V-belt should be coiled for easy distortion
free storage.
Variable speed belts are more sensitive to
distortion. It is recommended that these belts
should never be stored on pegs. These belts
should be always stored on shelves.
Effects of Storage:The shelf life of 6 years can be obtained if proper
storage conditions are maintained i.e., ambient
temp. not more than 30°C & relative humidity not
more than 70%. If the storage temp. increases
then the service expectancy from the belts gets
reduced. Under rough estimates it can be said
that for an increase of 20°C temp. above the
standard temp. range the belt life will be reduced
by 50%.
It is always recommended that if a drive is out of
use for a prolonged period, then the belt tension
should be relaxed & the necessary tension be
provided when the drive is to be restarted.
78
DO’S AND DON'TS
1. Ensure perfect alignment of pulleys. 2. The grooves should be free from burrs, sharp edges, rust, oil
and grease. To prevent this guard should be provided.
LIKE THIS NOT THIS
RIGHT WRONG
79
3. Belts used in multiple drive should be of same manufacturer.
4. For multiple drive, use as many V-belts required for better service life and low maintenance cost. For best results one should use Matched Set belts. The whole set should be replaced if one belt fails. PIX belts should not be lubricated.
5. A change in ride out indicates uneven belt wear or worn sheaves. Change belt/sheave with new set.
6. Pulley should be checked whether it is manufactured as per international standards or not, and should also be checked for worn out sheaves. Bearings should also be checked for lubrication.
WRONG
7. Do not pry or roll V-belts into the pulley grooves, if done so, the belts get damaged internally as a result of which belt life is affected. Using drive take-up allowance enable the belts to be easily mounted on the pulleys.
8. If the groove angle is too large, the canvas cover is quickly worn out along the lower side walls and if possible, the upper canvas gets worn out.
PLEASE REMEMBER
1. Belt dressing should never be used.
2. Proper ventilation of belts driving unit is a must.
3. Tensioning should be checked from time to time.
Trouble shooting (V-Belts)
Belt Turn Over in Pulleys
a) Poor drive alignmentb) Incorrect pulley groove or
excessive wear in groovesc) Excessive belt flapd) Low belt tensione) Worn out beltf) Ingress of foreign material
a) Realignb) Modify or replace pulleys.
c) Use an inside idler on slack sided) Re-tensione) Replace with new beltsf) Use more effective drive guard
Excessive Wear a) Incorrect pulley sectionb) Excessive wear in pulley groove c) Poor drive alignmentd) Small pulley diameter lesser than the recommended value e) Belt catching or protruding parts
a) Modify or replace pulleysb) Modify or replace pulleysc) Re-alignd) Re-design using correct pulley diametere) Remove protrusion or move drive away
Excessive Noise a) Poor drive alignmentb) Incorrect belt tensionc) Overloaded drived) Unbalanced pulleys
a) Re-alignb) Re-tensionc) Check drive details & re-designd) Re-design, if necessary balance the pulleys
Belt Swelling or Softening
Contamination by oil or other chemicals
Protect drive from contamination clean pulley grooves with petrol or alcohol before fitting new belts. If contamination cannot be prevented use PIX AOH V-Belts
Un-usual Belt Stretch a) Worn out badly damaged groovesb) Used belts with new belts on drivec) Belts from different manufacturers
a) Modify or replace pulleysb) Replace with completely new set of beltsc) For a set, belts must be from one manufacturer
Belt Breaking after Fitment
a) Forcing belt over pulley when fitting, damaging cord & cover.
b) Ingress of a foreign materialc) Insufficient belts or wrong section for drive d) Drive stalled
a) Fit an effective guardb) Fit and effective guardc) Check drive design & fit correct no. or section
of beltsd) Ascertain cause & rectify
Cuts & Splits in the base
a) Outside idler pulley in useb) Pulley diameter too smallc) Ambient temperature too highd) Ambient temperature too lowe) Abnormal belt slipf) Contamination by oil or chemical
a) Replace with inside idler pulley on the slack side of drive
b) Re-design using recommended minimum pulley pitch diameters
c) Ensure good ventilation & protect the belts from direct heat. Use PIX AOH construction V-belts
d) Warm area surrounding drivee) Check drive design to ensure correct no. of
belts, redesign if necessary, check drive tensionf) Protect drive from contamination
Severe Belt Vibration a) Drive has sufficient beltsb) Centre distance more than recommended
c) High shock loading
d) Too low belt tensione) Un-balanded pulleys
a) Check drive design & modify if necessaryb) Shorten centre distance, use an inside idler in
the drive slack sidec) Use banded belts / use an inside idler pulley in
the slack sided) Re-tension the belte) Balance the pulleys
Cannot beretensioned
a) Insufficient allowance for stretch in drive design
b) Excessive stretch caused by insufficient belts or wrong belt section for drive
c) Incorrect belt lengthd) Belt from different manufacturers
used on the same drive
a) Get sufficient allowance for take-up
b) Recalculate drive design & modify
c) Use belt of proper lengthd) For a set, belts must be from a single
manufacturer
PROBLEMS CAUSES REMEDIES
80
81
High tensile tension member across full width of belt for maximum utilisation of face width.
(cross sectional view)
Ribbed Belts (RMA/MPTA IP-26)
V-ribbed belts, also termed as Poly V-belts, can be described as flat cord-reinforced transmissions belts with length wise running triangular-shaped ribs with a top angle of 40º. This construction leads to good support for all cords in the reinforcement and therefore an even load distribution is achieved.
Applications:The smallest profile PH is used in miniature drives andthe next larger PJ in household equipment drives. Theprofile PK is mainly used in automotive applicationsand also used in industrial applications, while the largerprofiles PL and PM are used in industrial andagricultural applications.
House Keeping Electrical Appliances:Dryers, Health keeping equipments.
Work Tools: Harvester combines, Power driven sprayers andEngines for work tools.
Machine Tools: N C lathes, Milling machines, Drilling machines andGrinding machines.
Industrial Machines: High speed Printing Machines, Flour Grinders,Agitators, Air blowers, Generators, P U Compressors.
Others: Broadcasting Equipment Drives & Hovercrafts.
Characteristics:Good flexibility with high power carryingcapacity per unit width.
• Low stretch • Speed ratios over 1 : 30 are possible• High maximum belt speed upto 50m/s.
• Only five sections cover the large power range from 0.1 kw up to more than 600 kw.
• Combines the advantages of flat belts with those of V-belts.
• Premium Quality with heat, oil resistant and anti-static properties
Special rubber compound for high frictional grip and maximum tractive effort.
Ribbed driving surface for maximum area of contact and reduced face pressure
Size Designation:
Size: 550 J 8
550 J 8
55”Effective
Length, Le
JSection
No. ofRibs
Size: 10 PJ 1397
10
No. ofRibs
PJ
PJSection
1397
1397 mmEffective
Length, Le
Range (mm)
Min Max
No. of
Ribs
RecommendedMin Pulley
Diameter (mm)
RibPitch(mm)
e
Belt Thickness
(mm)t
Section
Range:
EffectiveLength (mm)
82
Automotive Applciation Belts
SPECIAL CONSTRUCTION BELTS
EPDM Poly Belts
• Working Temperature greater than 140 Deg C• Abrasion & Flex cracking resistance is very high• Longer service life as compared to regular• Dimensional stability is good• Higher power transmissionApplications: Automobiles, High Speed Engines
2.93.85.87.6
13.3
Range (mm)
Min Max
No. of
Ribs
RecommendedMin Pulley
Diameter (mm)
RibPitch(mm)
e
Belt Thickness
(mm)t
Section
50805080508050805080
280280280280280
2 to 2802 to 2202 to 1452 to 962 to 45
13205075
180
1.602.343.564.709.40
PHPJPKPLPM
Ribbed Belts: Product Range
t
e
Industrial Application Belts
PK 50804.5 3.56 50 2 to 145 280
Range:
• Absolutely flexible• Used on drive with pulleys rotating in both clockwise and
anticlockwise directions• Transmits the power from both the sides.
Section No. of RibsSize (Effective Length)
Min(mm)
Max(mm)
DPK
DPL
2 to 13
2 to 11
1195
1200
3105
3105
Double Poly V-belt Range:
Specially designed poly belts of PJ section for washing machines. These belts are with elastic properties which are useful in certain applications like washing machines.
Section No. of RibsSize
Min(mm)
Max(mm)
EL nPJ 2 to 20 600 3105
Range:Elasticated Belt (PJ)
Construction:Top Layer: Transversely aligned fibres filled CRTension Member: Treated nylon cordBase Rubber: Special CR compound
EffectiveLength (mm)
83
Application Data
1. Type of machine to be driven
2. Nominal Power (kW), P
3. Type & nominal speed of motor
4. Driven Shaft speed
5. Duty cycle category
6. Approximate centre distance
Determine the service factor & the design power
1. To determine the service factor (K) refer table 30 on page no.85
2. Design power : Pd = P x K
Select the Ribbed Belt Section
Refer to the cross section selection chart IV on page 85
Select the effective diameter of the small pulley (de)
Refer table 31 on page 87
Determine the speed ratio
SR = R / r
R = speed of faster shaft
r = speed of slower shaft
Calculate the Large pulley effective
diameter (De)
dp = de + (2 x h), for h refer page 87
Dp = dp x SR
De = Dp - (2 x h)
Select the nearest pulley diameter from table 32
on page 88
Dp = Pitch Diameter of large pulley in mm
Calculate the belt linear speed
where,
dp: Pitch Diameter of smaller pulley in mm
n: Speed of faster shaft (rpm)
Calculate the effective belt length
Calculate the centre distance corres-ponding to the standard effective length
where
Calculate the number of belt ribs
1. Determine the length correction factor, CI
2. Determine the arc of contact on the small pulley
3. Determine the arc of contact correction factor, Ca
4. Determine the speed ratio correction factor, Cr
5. Determine the basic power rating per rib (BPR)
(Please refer appropriate tables for BPR)
6. Calculate the corrected power rating per rib (CPR)
CPR = (BPR + Cr) x Cl x Ca
7. Calculate the number of belt ribs
(If the no. of Ribs comes in fraction, use next whole no.)
STEP 7
STEP 3
STEP 4
STEP 6
STEP 8
STEP 9
STEP 10
Drive Design Procedure for Ribbed BeltsThis Design Manual should be used for industrial drive calculation with two standard pulleys only.Please contact us to know about more complex drive designs.
STEP 1
STEP 2
STEP 5
= p x dp x n
60000m/sv
Le = 2C + [p 2
x (De+de) ]+ 2
(De-de)4C
[ ]2x4
-2
(De-de)2C = X
4 +12
x
X = L - [p 2
x (De+de) ]
180 -[ C ]60 x (De - de)a =
Number =Design power
CPR
84
Table 30 : Service Factor Selection
Chart IV - Cross Section Selection
PJ
0.1
PK
PL
PM
0.5 1 5 10 50
DESIGN POWER (Pd)
SP
EE
D O
F F
AS
TE
R S
HA
FT
(R
PM
)
100 500
10000
5000
1000
500
Class A Class B Motor Class D.C.Motors DC Motors
Shunt wound Compound & Series woundA.C. Motors AC MotorsNormal Torque High Torque
Synchronous or Asynchronous Vector ControlDC Brushless Motors Reluctance motors
Driven Machine IC Engines Speed > 700 rpm IC engines single cylinderTurbines Speed < 700 rpm
Line shafts, clutches
DUTY CYCLE CLASS < 10H 10 - 16H > 16 H < 10 H 10 - 16 H > 16 H
CLASS 1 : LOW EVEN TORQUEVacuum Cleaners, liquid agitators, belt-conveyors, blowers, centrifugal fans, Light Conveyors
CLASS 2 : MEDIUM EVEN TORQUEFood agitators, mixers, laundry machines,generators, machine tools, blenders
CLASS3 : TORQUEBakery & woodwork m/c, brick m/c, rotary-compressors, pumps, heavy duty conveyors,exciters, printing m/c, spraying m/c, axial fan
CLASS 4 : VERY UNEVEN TORQUEHammer mills, cement works, piston compr-essors, bucket elevators, hoists, flour mills, piston pumps, winches, paper mills
CLASS 5 : VERY UNEVEN TORQUE WITH OVERLOADSCrushers, grinder m/c, ball grinders, dredging m/c, agricultural m/c, industrial rubber machinery (Calenders, extruders, mixers)
1
1.1
1.2
1.4
1.6
1.1
1.2
1.3
1.5
1.7
1.2
1.3
1.4
1.6
1.8
1.1
1.2
1.3
1.5
1.7
1.2
1.3
1.4
1.6
1.8
1.3
1.4
1.5
1.8
2
85
Pulley Groove Dimensions - Millimeters
H / PH
J / PJ
K / PK
L / PL
M / PM
13
20
40
75
180
CrossSection
MinimumRecommended
OuterDiameter
GrooveAngle± 0.25
Degrees
Sg
rt+0.15-0.00
2a rbhg
Minimum
dB±0.001
Se
1.60± 0.03
2.34± 0.03
3.56± 0.05
4.7± 0.05
9.4± 0.08
0.15
0.2
0.25
0.4
0.75
0.300.00
-0.15
0.400.00
-0.15
0.500.00
-0.15
0.400.00
-0.15
0.750.00
-0.25
0.58
0.76
0.96
1.54
2.88
1.04
1.77
3.16
4.63
9.74
1.00
1.50
3.00
4.00
7.00
2.00.5
-0.3
3.00.8
-0.4
3.01.5
0
10.02.0
-1.0
13.03.0
-1.0
Sg
Figure : Standard groove dimensions
Face width of standard sheaves
Face width = S (Ng-1) +2S
WhereN = Number of grooves
g e
g
Se
hg
dB
rb
rta
86
OU
TS
IDE
DIA
ME
TE
R
PIT
CH
DIA
ME
TE
R
DIA
ME
TE
RO
VE
R B
AL
LS
40
40
40
40
40
Definition of the Small Pulley Effective Diameter (mm)
Pitch Diameter (mm) = Effective Diameter (mm) + (2 x h)
Belt Sectionh (mm)
PJ1.05
PK1.6
PL2.3
PM2.6
87
Table 31Determination of the Small Pulley effective diameter (de)
300
500
750
1000
1500
2000
3000
4000
5000
6000
7000
8000
9000
10000
100 45
40
35
35
30
30
30
25
25
20
20
20
20
20
20
60
50
45
45
40
35
35
30
30
30
25
25
25
20
20
75
63
60
56
50
45
45
40
35
35
30
30
30
30
30
95
80
75
67
63
60
56
50
45
40
40
40
35
35
35
125
106
95
85
80
71
67
60
56
50
50
45
45
40
40
160
125
112
106
95
85
80
71
67
60
56
56
50
50
45
180
140
125
118
106
95
90
80
71
67
63
60
56
56
50
224
180
160
150
132
125
112
100
90
80
75
75
71
67
63
250
212
180
170
150
140
125
112
100
95
85
85
80
75
75
315
250
224
200
190
170
150
132
118
106
100
95
90
85
80
355
280
250
224
200
180
170
150
132
125
112
106
100
95
90
400
315
280
250
224
200
180
160
140
132
125
118
112
450
355
315
280
250
212
200
170
150
140
500
355
315
280
250
224
212
180
160
150
500
400
355
315
280
236
224
190
170
500
400
355
315
280
250
224
200
180
n(rpm) 0.25 0.5 1 2 4 7 10 20 30 50 75 100 125 150 175 200
Design Power (kW)
Table 32: Standard Pulleys
SECTION PJno. of ribs
4,8,12,16,20
SECTION PKno. of ribs
6,8,10,12,16,20
SECTION PLno. of ribs
6,8,10,12,16,20
SECTION PMno. of ribs6,10,16,20
EffectiveDiameter
(mm)
2025303540455056606367717580859095
100106112118125132140150160170180190200212224236250280315355400450500560630710800
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
88
89
Ta
ble
32
:S
ec
tio
n P
J:
Ba
sic
Po
we
r R
ati
ng
(B
PR
) P
er
Rib
(k
W)
for
Sm
all P
ulle
y E
ffe
cti
ve
Dia
me
ter
(mm
)
S P E E D O F T H E S M A L L P U L L E Y R P M
de 10
020
030
040
050
056
060
070
072
080
090
096
010
0012
0014
0014
4016
0018
0020
0022
0024
0026
0028
0028
8030
0032
0034
0036
0038
0040
0042
0044
0045
0046
0048
0050
0052
0054
0055
0056
0058
0060
0062
0064
0066
0068
0070
0072
0074
0076
0078
0080
0082
0084
0086
0088
0090
0092
0094
0096
0098
0010
000
20
0.00
70.
014
0.02
10.
025
0.03
40.
037
0.04
20.
047
0.04
80.
053
0.05
90.
061
0.06
40.
075
0.08
90.
091
0.10
00.
111
0.12
40.
133
0.14
50.
156
0.16
60.
171
0.18
00.
190
0.20
10.
211
0.22
30.
234
0.24
50.
252
0.26
00.
263
0.27
40.
283
0.29
70.
306
0.31
10.
314
0.32
50.
337
0.34
40.
356
0.36
60.
375
0.38
60.
396
0.40
50.
412
0.42
30.
433
0.44
20.
451
0.46
00.
470
0.47
90.
488
0.49
60.
504
0.51
50.
523
25
0.04
80.
010
0.01
30.
017
0.02
20.
023
0.02
60.
030
0.03
10.
035
0.04
00.
041
0.04
30.
051
0.06
00.
061
0.06
50.
075
0.08
20.
090
0.09
60.
104
0.11
10.
114
0.11
80.
125
0.13
20.
140
0.14
60.
154
0.16
00.
167
0.17
00.
174
0.17
90.
185
0.19
40.
201
0.20
40.
207
0.21
10.
218
0.22
40.
232
0.23
90.
245
0.25
10.
255
0.26
40.
269
0.27
40.
281
0.28
20.
291
0.30
00.
302
0.30
90.
314
0.32
00.
328
0.33
10.
339
32
35
40
45
0.01
00.
020
0.03
00.
039
0.04
80.
054
0.05
80.
068
0.07
00.
076
0.08
60.
090
0.09
50.
112
0.13
00.
133
0.14
60.
165
0.18
00.
198
0.21
50.
232
0.24
70.
254
0.26
50.
281
0.29
70.
314
0.33
00.
345
0.36
00.
376
0.38
40.
390
0.40
40.
422
0.43
70.
452
0.46
00.
467
0.48
20.
497
0.51
20.
526
0.54
20.
555
0.57
00.
584
0.59
70.
612
0.62
70.
640
0.65
40.
666
0.68
10.
694
0.70
60.
720
0.73
30.
745
0.75
70.
770
0.01
10.
023
0.03
40.
045
0.05
50.
061
0.06
50.
076
0.07
90.
086
0.09
70.
103
0.10
60.
128
0.14
80.
151
0.16
70.
187
0.20
70.
226
0.24
50.
265
0.28
20.
290
0.30
10.
320
0.33
70.
374
0.39
20.
410
0.42
60.
437
0.44
60.
463
0.48
00.
498
0.51
40.
522
0.53
20.
548
0.56
50.
581
0.59
70.
615
0.63
20.
647
0.66
40.
680
0.69
50.
700
0.71
10.
725
0.74
20.
755
0.77
20.
786
0.80
10.
814
0.83
00.
844
0.85
70.
872
0.01
40.
027
0.04
00.
054
0.06
60.
074
0.07
90.
092
0.09
40.
104
0.11
70.
123
0.12
80.
153
0.17
70.
182
0.20
00.
224
0.24
60.
270
0.29
30.
315
0.33
70.
345
0.36
00.
383
0.40
50.
427
0.44
80.
470
0.49
10.
512
0.52
20.
633
0.55
40.
574
0.59
50.
616
0.62
60.
636
0.65
70.
675
0.69
50.
716
0.73
50.
755
0.77
00.
792
0.81
20.
830
0.84
70.
866
0.88
50.
903
0.92
00.
937
0.95
50.
972
0.98
71.
004
1.02
21.
037
0.01
50.
031
0.04
50.
062
0.07
60.
085
0.09
00.
106
0.11
00.
121
0.13
50.
143
0.15
00.
177
0.20
50.
211
0.23
30.
260
0.28
70.
314
0.34
00.
366
0.39
40.
403
0.42
00.
444
0.47
00.
495
0.52
10.
545
0.57
00.
595
0.60
70.
620
0.64
40.
667
0.69
10.
715
0.72
70.
738
0.76
40.
784
0.80
70.
830
0.85
30.
875
0.89
70.
919
0.94
00.
960
0.98
21.
001
1.02
21.
042
1.06
11.
089
1.10
11.
120
1.14
01.
156
1.17
01.
193
50
60
63
67
71
56
0.02
10.
041
0.06
10.
081
0.10
00.
112
0.12
00.
138
0.14
20.
157
0.17
60.
187
0.19
50.
231
0.26
80.
241
0.30
40.
340
0.37
50.
410
0.44
40.
480
0.51
40.
526
0.54
70.
580
0.61
40.
646
0.68
00.
712
0.74
30.
775
0.79
00.
807
0.83
80.
869
0.89
70.
927
0.94
30.
957
0.98
71.
015
1.04
51.
074
1.10
01.
129
1.15
61.
183
1.20
81.
235
1.26
01.
285
1.31
01.
334
1.35
51.
380
1.40
21.
424
1.44
51.
678
1.48
81.
507
0.02
30.
045
0.06
50.
087
0.11
00.
122
0.31
20.
150
0.15
50.
172
0.19
00.
204
0.21
20.
251
0.29
00.
297
0.33
00.
369
0.40
50.
444
0.48
20.
520
0.55
60.
572
0.59
40.
630
0.66
50.
700
0.73
50.
770
0.80
40.
840
0.85
60.
874
0.90
60.
940
0.97
21.
005
1.02
01.
036
1.06
71.
098
1.12
81.
158
1.17
91.
217
1.24
61.
275
1.30
21.
328
1.35
51.
382
1.40
61.
432
1.45
61.
480
1.50
21.
525
1.54
71.
568
1.49
01.
610
0.02
40.
147
0.07
10.
094
0.11
40.
129
0.13
70.
160
0.16
40.
180
0.20
30.
215
0.22
30.
267
0.30
70.
317
0.35
00.
390
0.43
10.
471
0.51
10.
550
0.58
70.
605
0.62
70.
665
0.70
40.
740
0.77
80.
815
0.85
20.
887
0.90
50.
923
0.95
70.
993
1.02
71.
061
1.07
71.
094
1.12
51.
159
1.19
01.
222
1.25
11.
282
1.31
01.
341
1.37
01.
397
1.42
51.
452
1.47
71.
502
1.52
71.
552
1.57
51.
598
1.62
01.
642
1.66
11.
681
0.02
50.
251
0.07
50.
100
0.12
30.
139
0.14
70.
171
0.17
40.
195
0.21
70.
232
0.24
00.
285
0.33
00.
340
0.37
40.
418
0.46
10.
504
0.54
70.
590
0.63
20.
647
0.67
10.
713
0.75
40.
794
0.83
30.
870
0.91
10.
950
0.96
80.
987
1.02
11.
062
1.09
71.
134
1.15
01.
167
1.20
21.
237
1.27
01.
301
1.33
51.
365
1.39
71.
428
1.45
61.
484
1.51
21.
542
1.56
81.
594
1.61
81.
645
1.66
71.
690
1.71
31.
733
1.75
31.
773
0.02
70.
254
0.08
00.
102
0.13
20.
147
0.15
80.
183
0.18
80.
208
0.23
30.
247
0.25
70.
306
0.35
30.
362
0.40
00.
445
0.49
10.
540
0.58
40.
630
0.67
40.
692
0.71
70.
763
0.80
40.
845
0.88
80.
931
0.97
21.
012
1.03
21.
052
1.09
11.
130
1.16
71.
204
1.22
41.
242
1.27
71.
314
1.34
71.
383
1.41
21.
448
1.48
01.
512
1.54
11.
571
1.60
01.
627
1.65
51.
680
1.70
51.
730
1.75
41.
775
1.79
71.
818
1.83
71.
852
0.01
70.
035
0.05
40.
070
0.08
70.
098
0.10
40.
121
0.12
40.
137
0.15
40.
165
0.17
00.
202
0.23
40.
240
0.26
50.
297
0.32
70.
357
0.38
70.
419
0.44
80.
460
0.47
70.
507
0.53
50.
554
0.59
50.
621
0.65
10.
677
0.69
20.
705
0.73
20.
761
0.78
70.
814
0.82
60.
840
0.86
70.
892
0.91
80.
941
0.96
70.
992
1.01
51.
040
1.06
41.
087
1.11
01.
134
1.15
71.
179
1.20
01.
221
1.24
11.
264
1.28
31.
302
1.32
11.
341
75
80
85
90
0.03
00.
058
0.08
70.
114
0.14
10.
155
0.16
50.
195
0.20
00.
221
0.14
70.
263
0.27
30.
325
0.37
20.
384
0.42
50.
475
0.52
30.
574
0.62
20.
667
0.71
60.
735
0.76
30.
808
0.85
50.
896
0.94
40.
977
1.03
11.
073
1.09
41.
114
1.15
61.
194
1.23
51.
276
1.29
41.
314
1.35
01.
387
1.42
51.
460
1.49
31.
525
1.56
01.
592
1.62
11.
650
1.68
11.
710
1.73
71.
763
1.78
81.
811
1.83
11.
856
1.87
61.
892
1.91
21.
930
0.03
20.
062
0.09
10.
123
0.15
20.
168
0.18
00.
207
0.21
50.
236
0.26
40.
281
0.29
20.
348
0.40
40.
414
0.45
80.
511
0.56
40.
614
0.66
50.
718
0.76
80.
788
0.81
90.
865
0.91
60.
965
1.01
11.
056
1.10
11.
148
1.17
11.
195
1.23
61.
277
1.32
11.
362
1.38
11.
402
1.44
11.
479
1.51
61.
551
1.58
81.
623
1.65
41.
687
1.71
81.
747
1.77
61.
804
1.83
31.
858
1.88
11.
904
1.92
51.
944
1.96
41.
981
1.99
82.
011
0.03
40.
067
0.10
00.
131
0.16
10.
180
0.19
10.
220
0.23
00.
254
0.28
40.
301
0.31
20.
372
0.43
00.
441
0.48
80.
544
0.60
00.
654
0.71
00.
765
0.82
00.
840
0.87
40.
924
0.97
41.
025
1.07
71.
127
1.17
51.
221
1.24
51.
267
1.31
41.
357
1.40
21.
442
1.46
51.
485
1.52
41.
565
1.60
51.
642
1.67
71.
713
1.74
71.
779
1.81
01.
840
1.86
71.
895
1.92
11.
945
1.96
41.
987
2.00
62.
023
2.04
12.
055
2.07
00.
080
0.03
70.
070
0.10
50.
114
0.17
20.
192
0.20
50.
235
0.24
40.
270
0.30
00.
321
0.33
10.
395
0.45
70.
470
0.52
00.
581
0.64
10.
700
0.75
80.
815
0.87
20.
892
0.92
80.
981
1.03
71.
090
1.14
31.
195
1.24
51.
295
1.31
81.
341
1.39
01.
437
1.48
31.
525
1.54
71.
569
1.61
11.
651
1.69
01.
727
1.76
41.
797
1.83
31.
863
1.89
31.
922
1.95
01.
977
2.00
12.
022
2.04
12.
061
2.07
72.
094
2.10
72.
118
2.12
72.
135
95
10
011
211
81
25
13
2
0.03
80.
075
0.11
10.
144
0.18
10.
201
0.21
80.
253
0.25
80.
287
0.32
10.
341
0.35
30.
420
0.48
50.
500
0.55
00.
615
0.67
90.
741
0.80
30.
863
0.92
30.
947
0.98
11.
040
1.09
71.
153
1.20
81.
261
1.31
41.
366
1.39
11.
415
1.46
51.
511
1.56
01.
605
1.62
71.
618
1.69
01.
732
1.77
11.
808
1.84
61.
880
1.91
31.
943
1.97
42.
001
2.02
72.
051
2.07
12.
092
2.11
12.
125
2.13
82.
150
2.16
01.
166
2.17
02.
172
0.03
80.
080
0.11
80.
157
0.19
40.
214
0.23
00.
267
0.27
40.
301
0.33
80.
360
0.37
10.
441
0.51
40.
527
0.58
10.
650
0.71
70.
781
0.84
70.
910
0.97
10.
995
1.03
51.
093
1.15
31.
213
1.27
51.
325
1.38
11.
435
1.46
11.
485
1.53
81.
587
1.63
51.
681
1.70
21.
725
1.76
81.
808
1.84
71.
885
1.92
21.
954
1.98
72.
017
2.04
42.
070
2.09
52.
115
2.13
41.
151
2.16
42.
175
2.18
62.
192
2.19
82.
201
2.20
02.
197
0.04
50.
091
0.13
40.
177
0.21
90.
244
0.26
00.
300
0.30
80.
342
0.38
10.
404
0.42
20.
501
0.57
80.
595
0.65
50.
731
0.80
70.
880
0.95
11.
024
1.09
31.
120
1.16
01.
228
1.29
31.
356
1.41
81.
478
1.53
81.
595
1.62
31.
650
1.70
41.
755
1.80
41.
851
1.87
41.
896
1.93
71.
976
2.01
52.
051
2.08
42.
111
2.14
32.
167
2.18
72.
208
2.22
42.
234
2.24
42.
250
2.25
42.
257
2.25
12.
245
2.23
52.
222
2.20
42.
181
0.04
80.
095
0.14
10.
187
0.23
10.
257
0.27
20.
318
0.32
70.
361
0.40
20.
428
0.44
50.
530
0.61
00.
627
0.69
10.
771
0.85
00.
928
1.00
41.
077
1.15
11.
180
1.22
01.
292
1.36
01.
424
1.49
01.
554
1.61
11.
670
1.70
21.
727
1.78
11.
834
1.88
11.
930
1.95
11.
974
2.01
52.
054
2.09
02.
124
2.15
52.
181
2.20
52.
225
2.24
52.
256
2.27
02.
275
2.28
02.
280
2.27
72.
267
2.25
72.
240
2.22
02.
197
0.05
10.
101
0.15
10.
197
0.24
40.
272
0.29
10.
337
0.34
70.
384
0.42
80.
454
0.47
40.
560
0.65
00.
665
0.73
40.
820
0.90
10.
984
1.06
41.
141
1.21
71.
247
0.29
11.
365
1.43
41.
504
1.57
10.
634
1.69
51.
757
1.78
41.
814
1.86
91.
922
1.97
22.
014
2.03
52.
058
2.09
82.
134
2.16
92.
197
2.22
52.
247
2.26
72.
281
2.29
42.
301
2.30
52.
304
2.30
02.
091
2.27
62.
258
2.23
5
0.05
40.
107
0.15
80.
210
0.26
00.
287
0.30
80.
358
0.36
70.
404
0.45
40.
480
0.50
10.
594
0.68
50.
704
0.77
90.
865
0.95
41.
037
1.12
31.
204
1.28
41.
314
1.36
11.
437
1.51
01.
580
1.65
01.
714
1.77
81.
840
1.86
71.
897
1.95
12.
001
2.05
02.
095
2.11
42.
136
2.17
32.
200
2.23
72.
263
2.28
42.
302
2.31
42.
323
2.32
72.
328
2.32
12.
311
2.29
72.
277
2.25
1
14
01
60
18
02
00
0.05
80.
114
0.17
00.
221
0.27
40.
304
0.32
80.
380
0.39
00.
431
0.48
10.
511
0.53
10.
631
0.73
00.
745
0.82
10.
917
1.01
01.
101
1.18
71.
275
1.35
91.
391
1.44
01.
518
1.59
41.
667
1.73
71.
804
1.86
81.
928
1.95
71.
987
2.03
82.
088
2.13
42.
175
2.19
52.
214
2.24
72.
277
2.30
02.
321
2.33
72.
344
2.35
12.
351
2.34
42.
334
2.31
52.
294
0.06
70.
131
0.19
50.
254
0.31
40.
350
0.37
40.
434
0.44
50.
495
0.55
00.
587
0.61
20.
721
0.83
40.
854
0.94
21.
050
1.15
11.
252
1.35
21.
445
1.53
71.
573
1.62
41.
710
1.79
01.
865
1.93
72.
006
2.06
72.
127
2.15
52.
181
2.22
82.
269
2.30
82.
336
2.35
22.
365
2.38
12.
395
2.40
02.
398
2.39
02.
375
2.35
0
0.07
40.
147
0.22
00.
288
0.35
70.
397
0.42
10.
491
0.50
40.
555
0.62
10.
662
0.68
50.
814
0.93
70.
962
1.05
80.
176
0.29
01.
400
1.50
71.
608
1.70
41.
745
1.79
81.
886
1.96
92.
045
2.11
52.
180
2.23
52.
290
2.31
32.
334
2.37
02.
400
2.42
02.
434
2.43
72.
437
2.23
42.
420
2.39
7
0.08
40.
165
0.24
40.
321
0.39
50.
441
0.47
10.
544
0.56
00.
620
0.69
00.
734
0.76
40.
904
1.04
01.
067
0.17
01.
300
0.42
11.
541
1.65
41.
762
1.86
01.
902
1.95
72.
071
2.12
42.
201
2.26
62.
324
2.37
12.
410
2.42
52.
440
2.45
72.
465
2.46
52.
451
2.44
12.
425
22
42
50
28
03
15
35
5
0.09
40.
182
0.27
10.
360
0.49
40.
525
0.61
00.
628
0.69
40.
774
0.82
10.
855
1.00
81.
156
1.18
71.
304
1.44
11.
576
1.70
21.
822
1.93
22.
036
2.07
52.
130
2.21
52.
287
2.35
40.
407
2.44
82.
478
2.49
42.
498
2.49
82.
487
2.46
3
0.10
40.
204
0.30
50.
400
0.49
40.
552
0.59
00.
681
0.70
10.
772
0.86
00.
914
0.95
01.
121
1.28
51.
317
1.44
51.
592
1.73
41.
864
1.98
82.
100
2.20
02.
237
2.28
82.
364
2.42
52.
474
2.50
42.
520
2.52
22.
502
2.48
8
0.11
90.
232
0.34
10.
450
0.55
50.
618
0.66
00.
761
0.78
10.
861
0.96
11.
020
1.05
81.
247
1.42
61.
460
1.59
61.
755
1.90
22.
038
2.16
02.
267
2.35
92.
391
2.39
02.
432
2.49
12.
528
2.54
72.
544
2.51
7
0.01
10.
024
0.03
70.
050
0.06
20.
069
0.07
30.
085
0.08
60.
095
0.10
40.
113
0.11
70.
138
0.15
60.
160
0.17
60.
192
0.20
70.
220
0.23
00.
248
0.25
10.
254
0.25
40.
255
0.25
2
0.15
10.
294
0.43
30.
569
0.70
10.
780
0.83
10.
959
0.98
41.
082
1.20
01.
275
1.32
11.
545
1.75
41.
792
1.94
32.
114
2.26
02.
384
2.48
02.
578
2.58
52.
590
2.58
82.
554
40
0
0.17
00.
330
0.48
70.
636
0.78
50.
872
0.93
10.
930
1.07
21.
100
1.21
01.
343
1.42
01.
471
1.71
11.
932
1.97
22.
125
2.29
22.
426
2.52
62.
588
2.60
82.
585
Table 34:SECTION PJ:Speed Ratio Correction Factor (Cr)
100200300400500560600700720800900960
10001200140014401600180020002200240026002800288030003200340036003800400042004400450046004800500052005400550056005800600062006400660068007000720074007400760078008000820084008600880090009200940096009800
10000
0.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.00
0.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.01
0.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.010.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.030.030.030.03
0.000.000.000.000.000.000.000.000.000.000.000.000.000.000.010.010.010.010.010.010.010.010.010.010.010.010.010.010.020.020.020.020.020.020.020.020.020.020.020.020.020.020.030.030.030.030.030.030.030.030.030.030.030.030.030.040.040.040.040.040.040.040.04
0.000.000.000.000.000.000.000.000.000.000.000.010.010.010.010.010.010.010.010.010.010.010.020.020.020.020.020.020.020.020.020.020.020.020.030.030.030.030.030.030.030.030.030.030.040.040.040.040.040.040.040.040.040.040.050.050.050.050.050.050.050.050.05
0.000.000.000.000.000.000.000.000.000.010.010.010.010.010.010.010.010.010.010.010.020.020.020.020.020.020.020.020.030.030.030.030.030.030.030.030.040.040.040.040.040.040.040.040.040.050.050.050.050.050.050.050.050.060.060.060.060.060.060.060.070.070.07
0.000.000.000.000.000.000.000.010.010.010.010.010.010.010.010.010.010.010.020.020.020.020.020.020.020.030.030.030.030.030.030.040.040.040.040.040.040.040.040.050.050.050.050.050.050.060.060.060.060.060.060.060.060.060.070.070.070.070.070.080.080.080.08
0.000.000.000.000.000.010.010.010.010.010.010.010.010.010.010.010.020.020.020.020.020.020.030.030.030.030.030.030.040.040.040.040.040.040.050.050.050.050.050.050.060.060.060.060.060.060.070.070.070.070.070.070.080.080.080.080.080.090.090.090.090.090.10
SpeedRatio
1.00 to1.01
1.02 to1.04
1.05 to1.09
1.10 to1.16
1.17 to1.26
1.27 to1.40
1.41 to1.65
above1.66
90
Table 35:Length Correction Factor (Cl)
0.600.800.850.900.951.001.051.101.151.20
CorrectionFactor
EffectiveLength
Up to 200200 - 350350 - 500500 - 700700 - 900
900 - 12001200 - 15001500 - 20002000 - 2500above 2500
0.720.760.800.840.880.910.940.971.001.021.051.071.091.11
Arc ofContact
on pulley
100110120130140150160170180190200210220230
Table 36:Arc of Contact CorrectionFactor (Ca)
CorrectionFactor
91
de
100
200
300
400
500
560
600
700
720
800
900
960
1000
1200
1400
1440
1600
1800
2000
2200
2400
2600
2800
2880
3000
3200
3400
3600
3800
4000
4200
4400
4500
4600
4800
5000
5200
5400
5500
5600
5800
6000
6200
6400
6600
6800
7000
7200
7400
7600
7800
8000
8200
8400
8600
8800
9000
9200
9400
9600
9800
1000
0
50
0.02
20.
044
0.06
50.
081
0.10
00.
111
0.11
80.
134
0.13
80.
150
0.16
60.
176
0.18
00.
211
0.24
40.
250
0.27
30.
300
0.32
90.
354
0.38
10.
405
0.43
10.
440
0.45
40.
477
0.50
00.
522
0.54
30.
564
0.58
40.
602
0.61
20.
622
0.64
00.
657
0.67
50.
691
0.69
70.
705
0.72
00.
735
0.74
60.
760
0.77
00.
784
0.79
10.
802
0.81
00.
819
0.82
60.
831
0.83
60.
841
0.84
50.
845
0.85
00.
850
0.85
00.
847
0.84
70.
841
56
0.03
10.
056
0.08
40.
108
0.13
20.
147
0.15
30.
178
0.18
40.
201
0.22
40.
237
0.24
60.
285
0.32
90.
337
0.36
60.
407
0.44
70.
484
0.52
00.
553
0.59
00.
605
0.62
50.
655
0.69
00.
724
0.75
40.
784
0.81
20.
842
0.85
40.
870
0.89
70.
922
0.94
70.
971
0.98
70.
996
1.01
71.
040
1.06
01.
080
1.10
01.
117
1.13
41.
148
1.16
31.
177
1.19
01.
200
1.21
11.
220
1.22
71.
234
1.23
81.
242
1.24
51.
246
1.24
51.
244
60
0.03
40.
064
0.09
40.
125
0.15
40.
170
0.18
10.
208
0.21
20.
234
0.26
10.
276
0.28
60.
334
0.38
50.
395
0.43
10.
477
0.52
50.
568
0.61
10.
654
0.69
50.
711
0.73
80.
777
0.81
70.
855
0.89
10.
929
0.96
20.
995
1.01
61.
031
1.06
31.
098
1.12
71.
157
1.17
11.
186
1.21
21.
238
1.26
41.
287
1.31
11.
333
1.35
21.
372
1.39
01.
407
1.42
21.
436
1.44
51.
460
1.47
01.
477
1.48
51.
490
1.49
11.
495
1.49
61.
494
63
0.03
70.
074
0.10
40.
138
0.17
00.
187
0.20
00.
230
0.23
50.
261
0.28
50.
305
0.31
60.
372
0.42
40.
435
0.48
00.
530
0.58
20.
631
0.68
10.
728
0.77
60.
795
0.82
20.
867
0.91
00.
954
0.99
51.
035
1.07
51.
116
1.13
51.
154
1.19
01.
225
1.26
01.
293
1.31
01.
325
1.35
41.
385
1.41
41.
441
1.46
51.
490
1.51
51.
536
1.55
51.
574
1.59
11.
607
1.62
11.
631
1.64
41.
651
1.66
11.
664
1.67
01.
671
1.67
31.
671
67
0.04
10.
082
0.12
00.
154
0.19
00.
211
0.22
50.
256
0.26
50.
291
0.32
40.
345
0.35
60.
421
0.48
10.
495
0.54
10.
600
0.66
00.
714
0.77
40.
824
0.88
10.
901
0.93
40.
985
1.03
41.
084
1.13
11.
178
1.22
41.
266
1.29
21.
311
1.35
21.
395
1.43
41.
472
1.49
11.
508
1.54
41.
578
1.61
01.
640
1.66
81.
695
1.72
11.
745
1.77
01.
790
1.80
81.
826
1.84
11.
854
1.86
61.
877
1.88
41.
890
1.89
11.
894
1.89
41.
890
71
0.04
70.
091
0.13
20.
171
0.21
10.
235
0.25
00.
287
0.29
40.
324
0.36
10.
382
0.39
40.
467
0.53
60.
551
0.60
40.
671
0.73
70.
802
0.86
40.
925
0.98
41.
007
1.04
31.
101
1.15
81.
214
1.26
61.
320
1.37
01.
421
1.44
51.
468
1.51
61.
562
1.60
51.
647
1.66
61.
687
1.72
71.
765
1.80
01.
834
1.86
41.
895
1.92
41.
951
1.97
41.
997
2.01
72.
037
2.05
12.
065
2.07
82.
085
2.09
12.
095
2.10
22.
102
2.09
82.
092
75
0.05
10.
100
0.14
50.
190
0.23
10.
256
0.27
50.
315
0.32
50.
354
0.39
50.
421
0.43
80.
515
0.59
20.
607
0.66
60.
742
0.81
40.
885
0.95
41.
021
1.08
81.
115
1.15
41.
217
1.28
01.
340
1.40
01.
455
1.51
51.
571
1.59
81.
623
1.67
71.
724
1.77
41.
820
1.84
41.
861
1.90
41.
945
1.98
52.
021
2.05
52.
090
2.12
02.
146
2.17
52.
194
2.21
72.
237
2.25
22.
262
2.27
72.
285
2.29
12.
292
2.29
12.
290
2.28
42.
274
80
0.05
70.
110
0.16
00.
211
0.25
80.
286
0.30
50.
351
0.36
10.
394
0.44
40.
470
0.48
70.
575
0.65
90.
677
0.74
30.
826
0.90
70.
988
1.06
31.
140
1.21
61.
245
1.28
71.
359
1.43
01.
497
1.56
61.
629
1.69
11.
754
1.78
41.
811
1.87
01.
922
1.97
72.
029
2.05
32.
077
2.12
32.
167
2.21
12.
248
2.28
82.
321
2.35
32.
381
2.40
62.
430
2.45
22.
472
2.48
52.
497
2.50
62.
512
2.51
52.
514
2.51
02.
503
2.49
02.
475
85
0.06
40.
120
0.17
50.
230
0.28
40.
314
0.33
50.
385
0.40
80.
436
0.48
90.
518
0.53
70.
635
0.73
00.
745
0.82
30.
914
1.00
41.
092
1.17
81.
262
1.34
51.
377
1.42
51.
504
1.58
11.
655
1.72
81.
800
1.86
61.
936
1.96
62.
000
2.06
42.
121
2.18
02.
235
2.26
12.
287
2.33
72.
384
2.42
52.
470
2.50
82.
544
2.57
42.
605
2.63
12.
652
2.67
42.
690
2.70
22.
710
2.71
72.
718
2.71
72.
708
2.69
62.
685
2.66
52.
641
90
0.06
80.
132
0.19
20.
251
0.31
00.
345
0.36
60.
424
0.43
40.
478
0.53
40.
565
0.58
50.
694
0.79
60.
818
0.90
01.
000
1.09
81.
194
1.28
61.
381
1.47
01.
505
1.55
81.
645
1.72
81.
810
1.89
01.
966
2.04
12.
112
2.14
72.
183
2.25
02.
314
2.37
52.
432
2.46
12.
488
2.54
22.
590
2.63
42.
678
2.71
82.
754
2.78
52.
815
2.83
82.
860
2.87
72.
890
2.89
72.
902
2.90
12.
899
2.89
12.
877
2.85
82.
835
2.80
62.
777
95
0.07
40.
144
0.21
00.
275
0.33
40.
374
0.39
80.
460
0.47
20.
520
0.57
80.
611
0.63
70.
753
0.86
40.
888
0.97
71.
085
1.19
11.
296
1.39
61.
497
1.59
41.
634
1.69
11.
784
1.87
21.
960
2.04
52.
130
2.21
02.
286
2.32
52.
361
2.43
12.
500
2.56
42.
624
2.65
52.
682
2.73
72.
787
2.83
42.
876
2.91
72.
952
2.98
13.
010
3.03
13.
048
3.06
43.
071
3.07
43.
072
3.06
73.
056
3.03
83.
017
2.98
82.
956
2.91
72.
873
100
0.08
00.
154
0.22
50.
295
0.36
10.
402
0.42
80.
495
0.50
60.
560
0.62
40.
662
0.68
50.
811
0.93
40.
955
1.05
11.
170
1.28
51.
395
1.50
61.
614
1.71
81.
761
1.82
21.
921
2.01
72.
112
2.20
22.
291
2.37
62.
456
2.49
72.
535
2.61
02.
680
2.74
82.
811
2.84
12.
871
2.92
52.
975
3.02
43.
065
3.10
43.
137
3.16
63.
190
3.20
83.
221
3.22
83.
231
3.22
73.
220
3.20
53.
186
3.15
63.
127
3.08
83.
042
2.99
02.
931
106
0.87
70.
167
0.24
40.
321
0.39
10.
435
0.46
50.
536
0.55
10.
608
0.67
70.
718
0.74
60.
882
1.01
21.
040
1.14
41.
271
1.39
41.
518
1.63
71.
752
1.86
41.
911
1.97
72.
084
2.18
72.
288
2.28
52.
480
2.57
02.
655
2.69
72.
737
2.81
72.
891
2.96
03.
025
3.05
43.
084
3.14
13.
192
3.23
73.
278
3.31
43.
344
3.36
53.
385
3.39
63.
403
3.40
33.
396
3.38
53.
365
3.33
93.
305
3.26
43.
217
3.16
13.
987
3.02
8
112
0.09
40.
180
0.26
20.
344
0.42
40.
471
0.50
10.
580
0.59
40.
655
0.73
10.
777
0.80
50.
950
1.09
41.
122
1.23
51.
375
1.50
61.
635
1.76
51.
890
2.01
22.
058
2.13
02.
244
2.35
42.
462
2.56
52.
660
2.75
62.
845
2.89
32.
933
3.01
53.
092
3.16
23.
228
3.26
03.
291
3.34
33.
392
3.43
63.
472
3.50
33.
528
3.54
63.
557
3.56
13.
560
3.55
03.
532
3.50
73.
475
3.43
13.
382
3.32
53.
258
118
0.10
10.
193
0.28
20.
366
0.45
50.
502
0.53
80.
622
0.63
60.
704
0.78
40.
831
0.86
11.
021
1.17
21.
203
1.32
31.
470
1.61
31.
754
1.89
22.
024
2.15
52.
206
2.28
02.
402
2.51
82.
632
2.74
12.
844
2.94
23.
036
3.08
23.
124
3.20
73.
284
3.35
53.
421
3.45
13.
481
3.53
53.
580
3.62
03.
652
3.67
33.
694
3.70
53.
705
3.70
13.
685
3.66
43.
633
3.59
03.
544
3.48
23.
415
125
0.10
70.
207
0.30
40.
398
0.49
00.
544
0.58
10.
671
0.68
70.
758
0.84
50.
897
0.93
21.
101
1.26
41.
300
1.42
81.
587
1.74
21.
892
2.03
82.
180
2.32
02.
375
2.45
12.
581
2.70
52.
825
2.94
13.
048
3.15
03.
245
3.29
43.
335
3.42
23.
496
3.57
13.
633
3.66
13.
690
3.73
73.
778
3.81
23.
837
3.85
23.
861
3.85
73.
845
3.82
53.
796
3.75
53.
706
3.64
63.
574
132
0.11
40.
221
0.32
40.
425
0.52
50.
584
0.62
10.
718
0.73
70.
814
0.90
80.
963
1.00
11.
181
1.35
51.
394
1.53
01.
700
1.86
52.
024
2.18
42.
334
2.48
12.
536
2.62
42.
758
2.89
13.
014
3.13
43.
244
3.35
03.
448
3.49
53.
540
3.62
43.
700
3.76
63.
828
3.85
43.
880
3.92
43.
954
3.98
13.
991
4.00
13.
994
3.97
53.
951
3.91
13.
864
3.80
4
140
0.12
50.
240
0.35
10.
460
0.56
70.
630
0.67
00.
771
0.79
40.
872
0.97
61.
036
1.07
71.
273
1.46
21.
501
1.65
01.
831
2.00
82.
181
2.34
72.
507
2.66
52.
724
2.81
42.
953
3.09
43.
224
3.34
73.
466
3.56
73.
666
3.71
43.
758
3.84
13.
914
3.97
54.
031
4.05
44.
075
4.10
84.
131
4.14
24.
142
4.13
24.
106
4.07
24.
021
3.96
1
160
0.14
40.
281
0.41
10.
540
0.66
50.
741
0.79
10.
914
0.93
41.
031
1.15
21.
221
1.26
81.
498
1.72
11.
764
1.94
02.
151
2.35
62.
555
2.74
52.
924
3.10
13.
171
3.27
03.
425
3.57
53.
711
3.84
13.
956
4.06
44.
157
4.20
14.
240
4.30
84.
364
4.40
74.
435
4.44
44.
447
4.44
74.
428
4.39
54.
344
180
0.16
70.
325
0.47
50.
621
0.76
50.
851
0.90
81.
048
1.07
71.
187
1.32
41.
404
1.45
51.
720
1.97
12.
027
2.22
42.
461
2.69
02.
914
3.12
43.
325
3.51
73.
590
3.69
03.
862
4.01
54.
150
4.27
94.
387
4.48
14.
560
4.59
14.
621
4.66
24.
684
4.69
14.
675
4.66
44.
641
4.58
5
200
0.19
10.
365
0.53
50.
701
0.86
60.
961
1.02
51.
184
1.21
41.
341
1.49
41.
585
1.64
41.
940
2.22
52.
281
2.50
02.
765
3.02
03.
261
3.48
93.
704
3.90
23.
978
4.08
74.
256
4.40
64.
537
4.65
14.
743
4.81
34.
862
4.87
74.
888
4.89
14.
867
4.81
8
224
0.21
50.
414
0.61
00.
800
0.98
51.
094
1.16
71.
344
1.38
01.
521
1.69
51.
799
1.86
42.
196
2.51
82.
581
2.82
43.
115
3.39
63.
656
3.90
14.
125
4.32
64.
404
4.51
14.
670
4.80
84.
917
5.00
35.
056
5.08
65.
083
5.06
65.
046
250
0.24
40.
470
0.68
90.
902
1.11
21.
234
1.31
41.
518
1.55
81.
717
1.91
12.
025
2.10
42.
474
2.82
52.
896
3.16
53.
484
3.78
14.
057
4.31
14.
535
4.73
44.
805
4.90
65.
045
5.15
15.
222
5.25
65.
255
5.21
1
280
0.27
50.
531
0.77
81.
021
1.25
51.
394
1.48
81.
714
1.76
11.
938
2.15
72.
286
2.37
12.
782
3.17
03.
250
3.54
13.
884
4.19
94.
481
4.73
44.
950
5.13
15.
191
5.28
75.
364
5.41
55.
417
315
0.31
40.
602
0.88
11.
157
1.42
51.
581
1.68
51.
841
1.99
22.
193
2.43
72.
581
2.67
43.
131
3.56
03.
644
3.95
54.
316
4.64
34.
922
5.15
85.
344
5.47
75.
515
5.55
55.
572
355
0.35
40.
684
1.00
21.
312
1.61
21.
792
1.91
02.
198
2.25
42.
475
2.75
12.
911
3.01
53.
514
3.98
14.
067
4.39
64.
769
5.08
25.
341
5.53
25.
660
5.71
15.
710
400
0.40
10.
774
1.13
41.
484
1.82
52.
024
2.15
72.
478
2.54
12.
792
3.09
23.
260
3.38
43.
925
4.42
04.
511
4.85
15.
210
5.49
75.
702
5.81
15.
825
450
0.45
40.
874
1.28
01.
673
2.05
42.
280
2.42
72.
784
2.85
53.
130
3.46
23.
651
3.77
74.
357
4.86
14.
954
5.28
55.
611
5.83
05.
936
500
0.50
40.
975
1.42
41.
861
2.28
12.
530
2.69
13.
082
3.15
83.
454
3.81
14.
015
4.14
84.
754
5.25
75.
346
5.64
75.
907
6.02
3
560
0.56
71.
091
1.59
72.
084
2.55
02.
822
3.00
03.
428
3.51
13.
834
4.21
44.
430
4.56
65.
180
5.65
25.
732
5.97
56.
111
630
0.63
61.
225
1.79
42.
337
2.85
03.
156
3.35
13.
817
3.90
54.
251
4.65
14.
871
5.01
35.
607
6.01
06.
065
6.18
9
Ta
ble
37
:S
ec
tio
n P
K:
Ba
sic
Po
we
r R
ati
ng
(B
PR
) P
er
Rib
(k
W)
for
Sm
all P
ulle
y E
ffe
cti
ve
Dia
me
ter
(mm
)
S P E E D O F T H E S M A L L P U L L E Y R P M
Table 38:SECTION PK:Speed Ratio Correction Factor (Cr)
100200300400500560600700720800900960
1000120014001440160018002000220024002600280028803000320034003600380040004200440045004600480050005200540055005600580060006200640066006800700072007400760078008000820084008600880090009200940096009800
10000
0.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.00
0.000.000.000.010.010.010.010.010.010.010.010.010.010.020.020.020.020.020.030.030.030.040.040.040.040.040.050.050.050.050.060.060.060.060.060.070.070.070.070.080.080.080.080.090.090.090.090.100.100.100.110.110.110.110.120.120.120.120.130.130.130.14
0.000.010.010.010.010.020.020.020.020.020.020.030.030.030.040.040.040.050.050.060.060.070.080.080.080.090.090.100.100.110.110.120.120.120.130.140.140.150.150.150.160.160.170.170.180.180.190.190.200.210.210.220.220.230.230.240.240.250.250.260.260.27
0.000.010.010.020.020.020.020.030.030.030.040.040.040.050.060.060.060.070.080.090.100.110.110.120.120.130.140.150.150.160.170.180.180.190.190.200.210.220.220.230.230.240.250.260.270.280.280.290.300.310.320.320.330.340.350.360.360.370.380.390.400.41
0.010.010.020.020.030.030.030.040.040.040.050.050.050.060.080.080.090.100.110.120.130.140.150.160.160.170.180.190.210.220.230.240.240.250.260.270.280.290.300.300.310.320.330.350.360.370.380.390.400.410.420.430.440.450.460.480.490.500.510.520.530.54
0.010.010.020.030.030.040.040.040.050.050.060.060.060.080.090.090.100.120.130.140.150.170.180.180.190.210.220.230.240.260.270.280.290.290.310.320.330.350.350.360.370.380.400.410.420.440.450.460.470.490.500.510.530.540.550.560.580.590.600.620.630.64
0.010.010.020.030.040.040.040.050.050.060.060.070.070.090.100.100.110.130.140.160.170.180.200.200.210.230.240.260.270.280.300.310.320.330.340.350.370.380.390.400.410.430.440.450.470.480.500.510.520.540.550.570.580.600.610.620.640.650.670.680.690.71
0.010.020.020.030.040.050.050.060.060.060.070.080.080.100.110.120.130.150.160.180.190.210.230.230.240.260.280.290.310.320.340.360.360.370.390.410.420.440.450.450.470.490.500.520.530.550.570.580.600.620.630.650.660.680.700.710.730.750.760.780.790.81
SpeedRatio
1.00 to1.03
1.04 to1.08
1.09 to1.15
1.16 to1.24
1.25 to1.48
1.49 to2.00
2.01 to2.75
above2.76
92
Table 39:Length Correction Factor (Cl)
0.900.951.001.051.101.15
CorrectionFactor
EffectiveLength
Up to 10001000 - 14001400 - 20002000 - 23002300 - 2500above 2500
0.720.760.800.840.880.910.940.971.001.021.051.071.091.11
100110120130140150160170180190200210220230
Table 40:Arc of Contact CorrectionFactor (Ca)
CorrectionFactor
Arc ofContact on
Pulley
93
Ta
ble
41
Se
cti
on
PL
: B
as
ic P
ow
er
Ra
tin
g
Pe
r R
ib (
kW
) fo
r S
ma
ll P
ulle
y E
ffe
cti
ve
Dia
me
ter
(mm
) (B
PR
)
S P E E D O F T H E S M A L L P U L L E Y R P M
de
100
200
300
400
500
560
600
700
720
800
900
960
1000
1200
1400
1440
1600
1800
2000
2200
2400
2600
2800
2880
3000
3200
3400
3600
3800
4000
4200
4400
4500
4600
4800
5000
5200
5400
5500
5600
5800
6000
6200
6400
6600
6800
7000
7200
7400
7600
7800
8000
8200
8400
8600
8800
9000
9200
9400
9600
9800
1000
0
0.08
80.
169
0.24
20.
316
0.38
60.
428
0.45
50.
525
0.53
60.
588
0.65
70.
690
0.72
20.
853
0.97
41.
000
1.00
51.
219
1.32
81.
446
1.55
71.
663
1.76
71.
805
1.86
91.
968
2.06
22.
156
2.20
02.
329
2.41
22.
490
2.52
92.
565
2.63
82.
688
2.77
02.
828
2.85
52.
901
2.93
02.
982
3.02
03.
058
3.08
83.
120
3.13
93.
162
3.17
43.
180
3.18
43.
177
3.16
63.
151
3.12
93.
100
3.06
53.
028
2.98
12.
927
2.86
72.
801
0.07
90.
149
0.11
90.
284
0.34
90.
385
0.40
90.
472
0.48
20.
499
0.58
90.
625
0.64
90.
760
0.87
00.
892
0.97
91.
085
1.12
01.
289
1.38
51.
478
1.57
01.
608
1.66
31.
747
1.83
51.
918
1.99
42.
068
2.14
02.
210
2.24
82.
280
2.29
02.
410
2.46
22.
515
2.54
22.
568
2.61
72.
658
2.69
02.
735
2.76
02.
788
2.80
52.
825
2.84
82.
858
2.56
22.
860
2.55
62.
846
2.83
22.
809
2.78
62.
755
2.72
02.
680
2.53
22.
581
0.09
70.
184
0.26
80.
350
0.42
70.
472
0.50
20.
578
0.55
80.
658
0.73
00.
773
0.80
10.
942
1.08
21.
112
1.21
91.
350
1.48
21.
604
1.72
81.
849
1.96
32.
010
2.07
72.
185
2.29
32.
392
2.49
02.
586
2.67
82.
762
2.80
02.
842
2.92
23.
001
3.06
33.
127
3.15
93.
187
3.24
03.
288
3.33
23.
371
3.40
03.
430
3.45
13.
467
3.47
33.
480
3.47
03.
461
3.44
23.
421
3.38
73.
349
3.30
13.
245
3.18
83.
117
3.03
92.
953
0.10
20.
200
0.29
10.
378
0.47
10.
520
0.55
10.
638
0.65
20.
720
0.80
10.
848
0.88
21.
040
1.18
91.
218
1.33
71.
482
1.62
31.
762
1.80
82.
027
2.15
72.
205
2.28
22.
401
2.51
52.
625
2.73
32.
834
2.93
33.
026
3.07
13.
118
3.20
13.
279
3.35
13.
420
3.44
83.
479
3.53
63.
582
3.62
73.
663
3.66
73.
721
3.73
73.
748
3.75
03.
742
3.73
13.
714
3.68
03.
647
3.60
03.
551
3.48
83.
418
3.33
83.
250
3.15
13.
044
0.11
20.
218
0.31
90.
412
0.51
00.
563
0.60
10.
692
0.71
00.
782
0.87
30.
926
0.95
81.
128
1.29
51.
327
1.46
01.
616
1.77
11.
922
2.06
52.
211
2.35
02.
402
2.48
42.
613
2.71
02.
810
2.97
23.
081
3.18
93.
260
3.33
23.
380
3.47
13.
554
3.62
83.
696
3.72
93.
760
3.81
23.
862
3.90
29.
941
3.97
03.
988
4.00
04.
002
3.99
23.
981
3.95
83.
929
3.82
03.
834
3.77
53.
705
3.62
43.
537
3.43
23.
324
3.20
13.
069
0.12
30.
233
0.34
40.
443
0.55
00.
607
0.65
10.
746
0.76
70.
841
0.94
01.
000
1.03
21.
220
1.40
11.
432
1.57
51.
748
1.91
32.
078
2.23
62.
390
2.53
92.
595
2.68
12.
820
2.95
23.
083
3.20
03.
321
3.43
23.
538
3.58
73.
638
3.73
03.
811
3.89
13.
962
3.99
34.
022
4.07
84.
126
4.16
34.
196
4.21
94.
228
4.23
34.
229
4.21
14.
186
4.15
24.
102
4.04
73.
982
3.90
13.
811
3.71
03.
580
3.47
1
0.14
40.
275
0.40
10.
526
0.64
60.
719
0.76
20.
881
0.90
30.
993
1.09
01.
173
1.22
01.
410
1.65
01.
691
1.85
62.
059
2.25
22.
446
2.63
02.
810
2.95
33.
050
3.15
03.
310
3.46
03.
600
3.74
33.
874
4.00
04.
109
4.16
54.
210
4.31
54.
401
4.47
94.
546
4.57
74.
602
4.65
14.
686
4.71
04.
721
4.72
34.
711
4.68
94.
650
4.60
24.
540
4.46
14.
369
4.26
14.
140
0.15
40.
297
0.43
20.
566
0.69
20.
770
0.82
10.
946
0.97
11.
070
1.19
11.
260
1.31
11.
544
1.77
51.
820
1.99
42.
211
2.42
12.
619
2.82
43.
014
3.20
03.
270
3.37
63.
545
3.70
33.
860
4.00
64.
140
4.26
54.
380
4.41
04.
490
4.58
64.
670
4.74
64.
810
4.83
54.
860
4.90
14.
925
4.93
84.
937
4.92
24.
894
4.85
24.
796
4.72
44.
634
4.53
04.
409
0.16
70.
320
0.46
60.
610
0.75
00.
831
0.88
91.
020
1.05
01.
156
1.28
61.
363
1.41
51.
670
1.91
31.
965
2.15
52.
390
2.61
52.
836
3.01
03.
251
3.44
83.
522
3.63
33.
814
3.98
24.
146
4.29
24.
436
4.56
34.
684
4.73
94.
789
4.88
24.
966
5.03
25.
090
5.11
05.
130
5.15
85.
169
5.16
55.
148
5.11
15.
061
4.99
14.
905
4.80
14.
678
0.17
90.
342
0.50
10.
652
0.80
30.
892
0.95
21.
100
1.12
81.
241
1.38
01.
463
1.52
21.
791
2.05
92.
109
2.31
32.
564
2.80
93.
041
3.26
83.
484
3.69
23.
771
3.89
04.
080
4.25
64.
422
4.57
54.
721
4.85
04.
965
5.02
15.
070
5.15
95.
233
5.29
45.
341
5.35
65.
368
5.38
15.
374
5.34
95.
290
5.24
55.
163
5.06
74.
942
0.19
40.
370
0.54
10.
706
0.87
00.
962
1.00
21.
184
1.21
61.
340
1.49
11.
581
1.64
01.
933
2.22
02.
275
2.49
32.
764
3.02
53.
276
3.51
63.
746
3.96
64.
051
4.17
64.
370
4.55
64.
726
4.88
45.
028
5.15
85.
272
5.32
15.
370
5.45
05.
512
5.56
05.
588
5.59
55.
590
5.58
55.
554
5.50
45.
430
5.33
15.
214
0.13
40.
256
0.37
20.
488
0.60
00.
662
0.70
80.
813
0.83
30.
920
1.02
51.
083
1.12
81.
327
1.52
11.
563
1.71
61.
902
2.08
62.
261
2.43
32.
600
2.76
12.
826
2.88
03.
060
3.21
03.
349
3.47
83.
602
3.71
93.
831
3.88
33.
935
4.03
04.
112
4.19
54.
264
4.29
44.
325
4.37
54.
420
4.45
14.
474
4.48
84.
490
4.48
14.
461
4.43
04.
388
4.33
24.
266
4.18
84.
095
3.99
03.
871
3.73
8
75
80
85
90
0.21
10.
403
0.58
80.
769
0.94
41.
052
1.11
91.
291
1.32
51.
460
1.62
31.
722
1.79
02.
111
2.41
92.
479
2.72
13.
011
3.29
23.
562
3.82
04.
062
4.29
54.
387
4.51
54.
722
4.91
35.
089
5.24
65.
389
5.51
35.
617
5.66
45.
704
5.76
95.
812
5.83
85.
841
5.83
25.
817
5.77
15.
702
5.60
2
0.22
70.
435
0.64
80.
835
1.02
51.
139
1.21
41.
400
1.43
51.
581
1.76
21.
866
1.93
72.
285
2.61
72.
685
2.94
33.
255
3.55
43.
841
4.11
54.
375
4.61
94.
713
4.84
75.
059
5.25
25.
428
5.58
35.
720
5.83
35.
923
5.96
45.
995
6.03
86.
059
6.05
16.
019
5.99
25.
959
5.87
0
0.24
40.
470
0.68
50.
895
1.10
31.
223
1.30
71.
507
1.54
41.
703
1.89
52.
009
2.08
52.
457
2.81
22.
882
3.16
03.
491
3.81
04.
112
4.40
04.
672
4.89
05.
021
5.16
05.
376
5.57
15.
742
5.89
16.
020
6.19
01.
190
6.21
96.
233
6.25
26.
241
6.20
06.
122
6.07
36.
016
0.26
10.
502
0.73
40.
960
1.18
11.
311
1.38
01.
610
1.65
11.
820
2.00
02.
149
2.22
92.
621
3.00
03.
081
3.37
63.
710
4.06
24.
381
4.68
24.
966
5.22
55.
321
5.46
15.
678
5.86
86.
032
6.17
16.
281
6.36
16.
411
6.42
26.
429
6.41
46.
361
6.27
4
95
10
011
211
81
25
13
2
0.27
90.
535
0.78
11.
020
1.25
91.
390
1.48
81.
715
1.76
11.
937
2.15
72.
288
2.37
42.
795
3.20
03.
279
3.58
73.
959
4.31
04.
642
4.95
55.
245
5.51
05.
590
5.74
95.
961
6.14
56.
300
6.42
16.
511
6.56
86.
590
6.58
56.
571
6.51
66.
400
0.29
40.
568
0.83
01.
085
1.33
61.
481
1.58
01.
820
1.86
92.
058
2.29
12.
427
2.51
82.
961
3.38
73.
471
3.78
04.
186
4.55
14.
900
5.21
75.
512
5.77
95.
878
6.01
66.
221
6.39
86.
538
6.64
16.
708
6.73
26.
680
6.69
46.
659
0.31
60.
607
0.88
51.
160
1.42
71.
586
1.68
71.
945
1.99
82.
200
2.44
52.
594
2.69
13.
161
3.61
43.
701
4.04
64.
451
4.83
85.
196
5.52
25.
820
6.08
96.
185
6.31
96.
516
6.67
16.
788
6.86
16.
891
6.87
26.
806
6.75
3
0.33
50.
642
0.94
11.
235
1.51
91.
686
1.78
02.
071
2.12
92.
340
2.60
12.
720
2.86
03.
360
3.83
53.
929
4.28
74.
712
5.11
15.
478
5.81
46.
111
6.37
66.
467
6.59
76.
772
6.90
06.
996
7.03
17.
016
6.94
5
0.35
60.
684
1.00
11.
310
1.61
11.
788
1.90
62.
196
2.25
02.
479
2.75
52.
921
3.02
73.
552
4.05
24.
151
4.49
04.
968
5.37
95.
755
6.09
06.
387
6.63
76.
729
6.84
67.
002
7.10
87.
157
7.15
17.
081
0.38
00.
729
1.06
51.
396
1.71
61.
904
2.03
02.
337
2.40
02.
638
2.93
23.
110
3.22
13.
779
4.30
64.
403
4.80
05.
257
5.67
96.
059
6.39
66.
682
6.92
17.
000
7.10
17.
228
7.28
97.
288
7.21
7
14
01
60
18
02
00
0.43
00.
825
1.20
01.
579
1.94
12.
156
2.29
62.
641
2.71
12.
981
3.31
03.
502
3.63
14.
249
4.82
44.
937
5.36
05.
847
6.28
16.
660
6.97
87.
230
7.41
17.
464
7.51
97.
545
7.48
4
0.48
80.
937
1.37
11.
790
2.20
12.
442
2.60
12.
990
3.06
93.
370
3.74
13.
955
4.08
84.
750
5.40
15.
521
5.97
06.
472
6.90
37.
256
7.52
27.
700
7.77
57.
777
7.74
7
0.55
41.
061
1.55
32.
031
2.49
62.
750
2.94
63.
384
3.47
03.
810
4.21
84.
458
4.61
45.
352
6.02
16.
142
6.60
87.
104
7.50
07.
785
7.95
17.
991
0.62
71.
205
1.76
12.
300
2.82
13.
125
3.32
43.
814
3.91
04.
286
4.73
85.
000
5.16
75.
961
6.62
06.
781
7.23
77.
691
8.00
28.
167
22
42
50
28
03
15
35
5
0.70
81.
361
1.98
72.
591
3.17
63.
515
3.74
14.
281
4.38
54.
800
5.28
85.
571
5.75
26.
550
7.28
17.
403
7.82
08.
181
8.34
6
0.78
81.
516
2.21
22.
880
3.52
53.
901
4.14
64.
734
4.84
55.
291
5.81
26.
111
6.30
37.
151
7.81
27.
924
8.26
68.
477
0.88
61.
695
2.47
43.
221
3.93
64.
349
4.61
45.
252
5.37
95.
851
6.40
56.
711
6.89
07.
742
8.31
78.
400
8.58
8
0.99
71.
911
2.78
43.
612
4.40
24.
854
5.14
25.
836
5.96
36.
469
7.03
27.
342
7.53
48.
294
8.70
08.
730
1.26
52.
420
3.50
94.
529
5.47
56.
000
6.33
27.
094
7.23
27.
744
8.27
08.
519
8.65
4
40
01
06
15
01
70
19
02
12
23
64
50
50
05
60
63
05
60
Table 42:SECTION PL:Speed Ratio Correction Factor (Cr)
100200300400500560600700720800900960
1000120014001440160018002000220024002600280028803000320034003600380040004200440045004600480050005200540055005600580060006200640066006800700072007400760078008000820084008600880090009200940096009800
10000
0.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.0000.000
0.0000.0000.0000.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0200.0200.0200.0200.0200.0300.0300.0300.0400.0400.0400.0400.0400.0500.0500.0500.0500.0600.0600.0600.0600.0600.0700.0700.0700.0700.0800.0800.0800.0800.0900.0900.0900.0900.1000.1000.1000.1100.1100.1100.1100.1200.1200.1200.1200.1300.1300.1300.140
0.0000.0100.0100.0100.0100.0200.0200.0200.0200.0200.0200.0300.0300.0300.0400.0400.0400.0500.0500.0600.0600.0700.0800.0800.0800.0900.0900.1000.1000.1100.1100.1200.1200.1200.1300.1400.1400.1500.1500.1500.1600.1600.1700.1700.1800.1800.1900.1900.2000.2100.2100.2200.2200.2300.2300.2400.2400.2500.2500.2600.2600.270
0.0000.0100.0100.0200.0200.0200.0200.0300.0300.0300.0400.0400.0400.0500.0600.0600.0600.0700.0800.0900.1000.1100.1100.1200.1200.1300.1400.1500.1500.1600.1700.1800.1800.1900.1900.2000.2100.2200.2200.2300.2300.2400.2500.2600.2700.2800.2800.2900.3000.3100.3200.3200.3300.3400.3500.3600.3600.3700.3800.3900.4000.410
0.0100.0100.0200.0200.0300.0300.0300.0400.0400.0400.0500.0500.0500.0600.0800.0800.0900.1000.1100.1200.1300.1400.1500.1600.1600.1700.1800.1900.2100.2200.2300.2400.2400.2500.2600.2700.2800.2900.3000.3000.3100.3200.3300.3500.3600.3700.3800.3900.4000.4100.4200.4300.4400.4500.4600.4800.4900.5000.5100.5200.5300.540
0.0100.0100.0200.0300.0300.0400.0400.0500.0500.0500.0600.0600.0700.0800.0900.1000.1100.1200.1400.1500.1600.1800.1900.1900.2000.2200.2300.2400.2600.2700.2800.3000.3000.3100.3200.3400.3500.3600.3700.3800.3900.4100.4200.4300.4500.4600.4700.4900.5000.5100.5300.5400.5500.5700.5800.5900.6100.6200.6300.6500.6600.680
0.0100.0200.0200.0300.0400.0500.0500.0600.0600.0600.0700.0800.0800.1000.1100.1200.1300.1500.1600.1800.1900.2100.2300.2300.2400.2600.2800.2900.3100.3200.3400.3600.3600.3700.3900.4100.4200.4400.4500.4500.4700.4900.5000.5200.5300.5500.5700.5800.6000.6200.6300.6500.6600.6800.7000.7100.7300.7500.7600.7800.7900.810
0.0100.0200.0300.0400.0500.0500.0600.0700.0700.0800.0900.0900.0900.1100.1300.1400.1500.1700.1900.2100.2300.2500.2600.2700.2800.3000.3200.3400.3600.3800.4000.4200.4300.4300.4500.4700.4900.5100.5200.5300.5500.5700.5900.6000.6200.6400.6600.6800.7000.7200.7400.7600.7700.7900.8100.8300.8500.8700.8900.9100.9300.950
SpeedRatio
1.00 to1.02
1.03 to1.06
1.07 to1.08
1.09 to1.16
1.17 to1.26
1.27 to1.40
1.41 to1.74
above1.75
Table 43: Length Correction Factor (Cl)
0.900.951.001.051.101.151.20
Correction
Factor
Effective
Length
Up to 13001300 - 17501750 - 25002500 - 37503750 - 45004500 - 5250above 5250
0.720.760.800.840.880.910.940.971.001.021.051.071.091.11
100110120130140150160170180190200210220230
SPEED
OF
SMALLER
PULLEY
IN
RPM
94
Table 44: Arc of Contact Correction Factor (Ca)
Correction
Factor
Arc ofContact on
Pulley
Ta
ble
45
:S
ec
tio
n P
M:
Ba
sic
Po
we
r R
ati
ng
(B
PR
) P
er
Rib
(k
W)
for
Sm
all P
ulle
y E
ffe
cti
ve
Dia
me
ter
(mm
)
de 100
200
300
400
500
560
600
700
720
800
900
960
1000
1200
1400
1440
1600
1800
2000
2200
2400
2600
2800
2880
3000
3200
3400
3600
3800
4000
180
0.63
11.
187
1.71
22.
217
2.70
52.
990
3.17
73.
637
3.72
74.
084
4.51
94.
774
4.94
05.
748
6.50
46.
648
7.20
77.
850
8.43
58.
954
9.40
19.
776
10.0
7110
.165
10.2
8110
.402
10.4
3310
.363
10.1
889.
905
190
0.68
71.
293
1.86
72.
417
2.95
33.
265
3.47
13.
973
4.07
24.
464
4.93
75.
216
5.40
06.
284
7.10
87.
264
7.87
18.
571
9.19
89.
750
10.2
2110
.609
10.9
0310
.990
11.1
0111
.194
11.1
8011
.050
10.7
9810
.422
200
0.74
11.
397
2.02
12.
620
3.19
83.
536
3.76
04.
308
4.41
44.
840
5.35
45.
660
5.85
76.
811
7.70
47.
874
8.52
79.
274
9.94
010
.521
11.0
1111
.401
11.6
8711
.769
11.8
5511
.911
11.8
4011
.635
11.2
90
212
0.80
71.
524
2.20
42.
860
3.49
53.
865
4.11
04.
708
4.82
65.
290
5.85
56.
185
6.40
27.
443
8.41
18.
595
9.29
910
.100
10.8
0811
.415
11.9
1212
.292
12.5
5512
.622
12.6
8212
.671
12.5
1112
.192
224
0.87
11.
648
2.38
43.
099
3.78
44.
190
4.45
55.
104
5.23
15.
735
6.34
46.
705
6.94
18.
061
9.10
19.
302
10.0
5210
.900
11.6
4112
.264
12.7
6213
.128
13.3
4513
.391
13.4
1213
.314
13.0
44
250
1.01
21.
920
2.78
13.
614
4.41
84.
890
5.20
05.
955
6.10
46.
690
7.40
07.
815
8.08
49.
381
10.5
6110
.782
11.6
2512
.554
13.3
3813
.966
14.4
2114
.696
14.7
7214
.742
14.6
41
280
1.17
42.
228
3.23
24.
200
5.13
65.
685
6.04
46.
924
7.09
67.
772
8.59
09.
068
9.37
710
.847
12.1
7112
.414
13.3
3014
.310
15.0
9415
.660
15.9
9516
.075
315
1.35
42.
574
3.74
04.
861
5.94
46.
574
6.99
18.
001
8.20
08.
971
9.90
510
.441
10.7
9512
.440
13.8
8514
.148
15.1
0916
.087
16.7
9217
.201
17.2
83
355
1.56
82.
981
4.33
25.
631
6.88
07.
610
8.08
69.
242
9.46
610
.349
11.4
0012
.005
12.3
9614
.208
15.7
4416
.015
16.9
7117
.855
18.3
56
400
1.81
03.
445
5.00
46.
500
7.94
08.
774
9.31
210
.630
10.8
8511
.878
13.0
5213
.720
14.1
5016
.090
17.6
4517
.905
18.7
7119
.411
450
2.07
13.
945
5.73
07.
435
9.06
410
.010
10.6
2012
.091
12.3
7513
.472
14.7
5315
.473
15.9
3217
.933
19.4
0519
.632
20.2
76
500
2.33
04.
441
6.44
38.
352
10.1
7211
.212
11.8
9013
.501
13.8
0814
.992
16.3
5217
.105
17.5
7219
.548
20.8
1020
.966
560
2.64
15.
032
7.29
19.
440
11.4
6612
.621
13.3
6315
.114
15.4
4416
.705
18.1
2618
.882
19.3
5021
.154
630
3.00
05.
711
8.26
710
.677
12.9
3014
.195
15.0
0616
.885
17.2
3618
.549
19.9
6920
.693
21.1
2022
.519
700
3.35
36.
381
9.22
511
.878
14.3
4015
.702
16.5
6518
.530
18.8
8420
.202
21.5
4722
.182
22.5
31
S P E E D O F T H E S M A L L E R P U L L E Y
R P M
95
Table 48: Arc of Contact Correction Factor (Cr)
0.720.760.800.840.880.910.940.971.001.021.051.071.091.11
Arc ofContact
on pulley
100110120130140150160170180190200210220230
CorrectionFactor
Table 46:SECTION PM:Speed Ratio Correction Factor (Cr)
100200300400500560600700720800900960
100012001400144016001800200022002400260028002880300032003400360038004000
0.000.000.010.010.010.010.010.010.010.020.020.020.020.020.030.030.030.040.040.040.050.050.060.060.060.060.070.070.080.08
0.010.010.020.020.030.030.030.040.040.040.050.050.050.060.080.080.090.100.110.120.130.140.150.160.160.170.180.190.210.22
0.010.020.030.040.050.060.060.080.080.090.100.100.110.130.150.160.170.190.220.240.260.280.300.310.320.350.370.390.410.43
0.020.040.060.080.100.110.120.140.150.160.180.190.200.240.280.290.320.360.410.450.490.530.570.580.610.650.690.730.770.81
0.030.070.100.140.170.190.200.240.240.270.300.320.340.410.470.490.540.610.680.740.810.880.950.971.011.081.151.221.281.35
0.050.090.140.190.240.260.280.330.340.380.430.450.470.570.660.680.760.850.951.041.131.231.321.361.421.511.611.701.801.89
0.060.110.170.230.290.320.340.400.410.460.520.550.570.690.800.830.921.031.151.261.381.491.611.651.721.841.952.072.182.30
0.070.140.200.270.340.380.410.470.490.540.610.650.680.810.950.971.081.221.351.491.621.761.891.942.032.162.302.432.572.70
SpeedRatio
1.00 to1.01
1.02 to1.04
1.05 to1.06
1.07 to1.14
1.15 to1.24
1.25 to1.48
1.49 to2.00
above2.01
SPEED
OF
SMALLER
PULLEY
IN
RPM
96
0.951.001.051.101.151.20
Up to 27502750 - 37503750 - 50005000 - 70007000 - 9000above 9000
Table 47: Length Correction Factor (Cl)
Correction
Factor
Effective
Length
Installation & Maintenance1) Make sure that the power is off and machine
stops completely before setting the belt or during maintenance.
2) Do not use excessive force to set the belt. Reduce centre distance by using the motor slide for smooth setting, when using the tension pulley the belt should be loosened beforehand.
3) Make sure that oil does not stick to the belt while setting the belt.
4) When the centre distance is long ,or when using PJ or PK type with small pitches make sure that you do not mis set the belt by a ridge.
5) Tension the drive properly.
6) With multi belt system make sure that the pulley groove dimensions are perfect.
7) Check if the pulley groove is worn or damaged in operation if the pulley tip gets smaller (sharpened) replace the pulley, since it can cause shortened belt life.
Installation Procedure
The following installation procedure should be strictly adhered to achieve the satisfactory performance from the ribbed belt drive.
1) Switch off the main supply before beginning with the exercise of installation.
2) Bring the pulleys closer to each other so that the belt can be removed easily.
3) Inspect the pulley grooves for any scores , sharp edges, dirt & rust. Clean them as required.
4) Ensure the alignment of pulleys. Make sure that the shafts are also properly aligned.
5) Mount the ribbed belt with no tension. Make sure that the ribs have been properly seated in the grooves.
6) Tension the ribbed belts as per the procedure given below.
7) Give some running time to the drive so that the belts are properly seated in the grooves.
8) Guard the drive properly.
Tensioning Procedure It is imperative that to achieve the best from your
ribbed belt drive, a proper tension be maintained in the drive. Under or over tensioning can cause the ribbed belt to fail prematurely. The following steps should be worked out to ensure the proper tension in the drive.
1) Fit the belt on the pulleys with no tension.
2) Draw two perpendicular lines across the belt at about 80% of the belt span between the pulleys as shown in the figure. Say for example the lines are placed 1000 mm apart. ( A ).
3) Increase the distance between two lines by 0.5 to 0.75% I.e. by 5 to 7.5 mm for an initial spacing of 1000 mm, so that the (A ) now becomes 1007.5 mm.
4) Run the drive under load for about 10 minutes.
5) Check the tension of the belt (spacing between two lines) & readjust if necessary.
A
A
Installation & take-up allowanceL
(mm)
< 750
750 to 1200
1200 to 2000
2000 to 3500
3500 to 5000
-10
-10
-15
-20
PJ
+10
+15
+20
+30
M T
-11
-12
-16
-23
PK
+13
+16
+22
+32
M T
-15
-20
-30
-40
PL
+20
+20
+35
+50
M T
-40
-50
+50
+70
PM
M T
M
T
E for take up
Calculated E
E for fitting
97
How to Use the Idler Pulley Be careful when you use the idler pulley since itmight cause misalignment or shorten the belt service life through flex fatigue. The idler pulley is used when the pulley is fixed, when you want to reduce vibration, or to increase the contact angle of the small pulley. When you use an idler pulley, please follow the instructions given below. Please contact us if you use an outside idler, in particular, since it considerably reduces the belt service life.
Instructions to Use the Idler Pulley
• Use the idler pulley on the slack side of the belt.
• Use the idler pulley at inside of the belt, rather than outside.
• Do not place the idler pulley close to other pulleys.
• The idler pulley should be flat, without any flanges.
• Do not use the belt for clutching device using idler.
• Correct the power transmission capacity if the contact angle might be changed.
1. When using the inside idler pulley
• Use an idler pulley with grooves.
• Position of the idler pulley should be near to the large pulley in order to maintain the contact angle of smaller pulley.
The idler pulley diameter should be larger than or equal to the smaller pulley diameter.
2. When using the outside idler pulley.
• Use the flat idler pulley without any crown.
• Position of the idler pulley should be near to the small pulley.
• Minimum idler pulley diameter is shown in the table below.
The idler pulley diameter should be 1.5 times or more than the Smaller pulley diameter.
Idler Pulley Minimum Diameter
Belt Type J PK L M
MinimumDiameter
50 90 150 300
98
Questionnaire
Dear Customer,Kindly fill in the below given form and mail it back to enable us to find an optimum solution for your drive.
Details of Prime MoverHP or KW rating
Method of starting
Type of drive machine
Maximum HP or KW requirement
Operation hours per day
If, fly wheel is used, give its dimensions:
Whether drive is V-V / V-Flat type
Whether drive is exposed to
1) Heat 2) Moisture 3) Vibration
4) Corrosive liquids 5) Hazardous vapours
(Tick where necessary)
Driving pulley pitch dia.
Driven pulley pitch dia.
Driving shaft r.p.m.
Driven shaft r.p.m.
Centre distance between pulleys
Minimum Maximum
Pulley Details (driver)Top Width
Groove depth
Mean Groove Spacing
Groove Angle
No. of grooves
Pulley Details Driven
Details of previous belt usedSection & Size
Make
Batch Code
No. of belts used
Service life
Expected life of belt
Condition of drive
Alignment - OK / Not OK
Pulley worn out - Yes / No
Tensioning - OK / Not OK
Belt Installation method followed - Yes / No
Nature of failure
Idlers (Tick ü Where necessary)Inside / Outside
Flat / Grooved
Diameter of idlers
On slack / on tight side
Tensioning - Spring tensioning / Screw tensioning
101
FOR OFFICE USE ONLY
Attended by:
Remarks:
Signature & date:
Name & designation:
Name of the Company:
Address:
Phone : Fax :
Notes
Reproduction of this publication in any form is strictly prohibited.
In matters of discrepency, reference is to be made to our standard terms & conditions.
102
Ribbed belt breaking after a short period of running
a) Forcing the belt over pulley during installation.
b) Overloaded drive
c) Ingress of foreign body
d) Drive stalled
a) Use proper installation techniques
b) Re-check the drive design
c) Fit an effective guard
d) Check for lubrication
Cuts and splits in the ribs
Severe belt vibrations
Excessive Noise a) Contamination by oil, grease or chemicals
a) Protect the drive
PROBLEMS CAUSES REMEDIES
a) Pulley diameter too small
b) Ambient temperature too high
c) Abnormal belt slip
d) Contamination by chemicals
a) Re-design using the min. recommended diameter.
b) Ensure good ventilation
c) Check drive tension
d) Protect the drive
a) Overloaded drive
b) Centre distance more than recommended
c) High shock loading
d) Too low belt tension
e) Unbalanced pulleys
a) Redesigning drive may be necessary.
b) Use an inside idler on the slack side.
c) Use an inside idler on the slack side
d) Re-tension the drive
e) Balance the pulleys
Cannot be re-tensioned a) Insufficient allowance for re-tensioning
b) Excessive stretch caused by overloaded drive
c) Incorrect belt length
a) Modify the drive
b) Re-design the drive
c) Use belt of proper length
Excessive wear or ribs a) Starting torque too high
b) Incorrect pulleys
c) Excessive wear of grooves
d) Poor drive alignment
e) Smaller than recommended minimum pulley diameter
f) Belt catching on protruding parts
g) Wrong section of belt for pulleys
h) Too low belt tension
a) Re-design the drive
b) Re-machine the pulleys
c) Re-machine pulleys
d) Re-align the pulleys
e) Re-design using correct pulley diameters
f) Remove protrusions
g) Correct the belt section
h) Re-tension the drive
99
Trouble Shooting (V-Belts)
Abbreviations:
Physical Quantity Symbol Unit
Power P Kilowatt (kW)
Torque T Newton-Metre (N-m)
Force F Newton (N)
Rotational speed n Rev / min
Pulley pitch diameter d Millimetre (mm)
Belt speed V Metre per second (m/s)
LengthInches x 25.4 = MillimetresInches x 0.0254 = MetresFeet x 0.3048 = Metres
ForceKilogram Force (Kgf) x 9.81 = Newton (N)Pound Force (Ibf) x 4.45 = Newton (N)
TorqueKilogramforce metre (Kgf - m) x 9.81 = Newton Metre (N-m)Pound feet (Ibf - ft) x 1.36 = Newton Metre (N-m)Pound Inches (Ibf - in) x 0.113 = Newton Metre (N-m)
PowerHorse Power (HP) x 0.746 = Kilowatt (kW)Cheval-vapeur (CV) x 0.735 = Kilowatt (kW)Pferdestarke (PS) x 0.735 = Kilowatt (kW)
SpeedFeet/Minute (ft/min) x0.00508 = Meter/Sec. (m/s)
MassKilogram (kg) x 2.205 = Pound (Ib)Pound (Ib) x0.454 = Kilogram (Kg)
Useful Formulae:5Belt Speed (V) : V (m/s) = 5.236 x d x n (rev/min) / 10
Power (P) : P (kW) = Torque (N-M) x n (rev/min) 9550
= Belt effective tension (N) x V/105
Torque (T) (N-M) = 9550 P n
Belt effective tension (Te) : Te (N) = 2000 T d
Static tension (Ts) : Ts (N) = 32 x F x BWhere F is the force required to deflect a belt 15 mm per meter of span, 'B' is no. of belts.
2Centrifugal Tension (Tc) : Tc (N) = 2mV
Dynamic tension (TD) : TD(N) = Ts - Tc
Conversion Constants
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