pu timing belts - caldic techniek

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MEGAPOWERPU t im ing be l t s

MEGADYNE S.p.A.

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TABLE OF CONTENTSMEGAPOWER

Introduction to Megapower belts 4

Megapower belt system specifications 5

Classifications 6

Power transmission calculation procedure 8

Calculation parameters 10

Belt calculation example 11

Belt installation 12

Causes of belt failure 13

Megapower feasibility table 23

Coatings and cover properties 24

Special executions 25

Special executions photos 26

Pulleys and timing bars 28

Useful formulas and conversion table 30

Belt data

MXL 14

XL 15

L 16

H 17

T2,5 - T2,5DL 18

T5 - T5DL 19

T10 - T10DL 20

AT5 21

AT10 22

4

MEGADYNE began manufacturing transmission beltsin 1957 and moulding MEGAPOWER belts in 1975.MEGAPOWER timing belts are manufactured in ther-moset polyurethane by a unique moulding process.The thermoset polyurethane gives superior wear andabrasion resistance. Several type of cords, helicoidallyrolled up inside the belts, assure excellent dimensionalstability and offer high performances in terms of flexibility and traction resistance.MEGAPOWER belts are particularly suitable for powertransmission applications.

MEGAPOWER timing belt drives represent a modern and efficient system of power transmission. They combine theadvantages and properties of geared drives with those of Vee and Flat belts whilst eliminating the troubles typicalof each of these types of transmission.

MEGAPOWER drives allow:

Thanks to their features, Megapower belts can be successfully used in a wide range of applications such as:

• synchronous transmission

• constant and high angular speed

• excellent mechanical performance

• dimensional stability

• low noise

• low installation tension

..........• minimum drive dimensions

..........• omega drive configuration

..........• customised belt engineering

• computers tape movement

• office automation equipments

• medical equipment

• packaging machinery

• motor vehicles

• swimming pool cleaning robots

• plotters

• money changers

• optical instruments

• robotic arms

• electric appliances

• shower manual controls

• vacuum systems

• vending machines

• food machinery

• textile machinery

• leisure and do-it-yourself equipments

INTRODUCTION TO MEGAPOWER BELTS

MEGAPOWER USE ADVANTAGES

MEGAPOWER APPLICATION AREAS

1) Pitch is the distance in millimetres between two adjacent teeth centers as measured on the pitch line of the belt;the theoretical pitch line of a MEGAPOWER belt lies within the tensile member. It is indicated with abbreviations like T5, AT5, T10, AT10, H. The correspondence between abbreviations and pitchesare indicated in the products pages.

2) Pitch length is the total length (circumference) in millimetres as measured along the pitch line.On the pulley, the pitch line identifies the primitive diameter.The primitive diameters of the driver (d1) and driven (d2) pulleys are the ones to be used for calculating the transmission ratio

3) Width can vary depending on driving system needs.

5

To satisfy a wide range of loads, speeds and applications, MEGAPOWER belts and pulleys are made in a selection ofsizes, capacities and dimensions.

The three most significant dimensions of a belt are:

The imperial pitch belts follow ISO 5296-1 normative.The T series driving systems follow the normative DIN-7721-1.The ISO normative for AT series driving systems is under construction.

A belt is constituted by two components: the body in POLYURETHANE and a tension member represented by theCORDS in steel, fiberglass, polyester and Kevlar.

Reference dimensions

MEGAPOWERMEGAPOWER BELT SYSTEM SPECIFICATIONS

pitch pitch length width

Belt pitch

STANDARD RANGE

MXL • XL • L • H

T2,5 • T5 • T10

T2,5DL • T5DL • T10DL

AT5 • AT10

i = d2

d1

6

CLASSIFICATIONS

CLASSIFICATIONS

Megapower Timing Belts are manufactured in thermoset polyurethane, with helicoidal zinked steel. This type ofbelts, developed by our Research & Development, offers good running characteristics and high traction loads. Theyare especially suited for power transmission. An extra thickness of special coating is also possible on the back of thebelt offering extra protection against aggressive or heavy products.1) The body of the belts is grey/green thermoset polyurethane 88 ShA, characterized by high levels of wear resistance

even in the presence of shock and surge loading. The thermoset polyurethane is obtained by mixing a prepolymerwith a bonding compound and heating the mixture. After cooling down to ambient temperature, the result is apolyurethane with good chemical and mechanical characteristics giving the belt high performances and long lifetime.

2) High strength helicoidal zinked steel tension members allow high breaking load and extremely low elongation.The combination of these high grade materials improves belt performances which can be summarised as follows:• exceptional resistance to abrasion and tooth shear• low coefficient of friction• high flexibility• ozone and temperature resistance (-25 °C / +80 °C)• oil, grease and gasoline resistance

MECHANICAL AND CHEMICAL CHARACTERISTICS

• Constant dimensions • Low pretension• Noiseless • Constant length• Free maintenance • High abrasion resistance• High flexibility • Ageing, Hydrolysis, Ozone resistant• High resistance steel traction cords, • Working temperature -25 °C / +80 °C

with little stretching and top flexibility • High resistance to Oils, Greases and Gasoline• Linear speeds up to 70 m/s • Fairly Acid-proof and Alkali-proof

BODYMegapower belts are manufactured with grey/green thermoset polyurethane 88 ShA as standard. Special compounds (different hardnesses, special properties) are available on request. Here under some PU characteristics:

Water No problem in normal or sea clean water, at room temperature. Over 60 ºC there is a fast decreaseof breaking strength.

Acids In acids diluted proportions, at room temperature, this PU is moderately attached. In high concentration acid solutions, this PU has a very short lifespan. Over 50 ºC, acids are always dangerous for thermoset PU.

Alkalis In alkalis diluted proportions, at room temperature, this PU is moderately attached. In high concentration alkaline solutions, this PU has a very short lifespan.

Solvents Thermoset PU is insoluble in the greater part of solvents. Only the very polar solvents (same astetrahydrofuran, dimethylformamide, n-methylpyrrolidone) can dissolve or tight damage PU.The esters or the ketons (same as ethylacetate or methylethylketene) can usually produce abulge, decreasing mechanical characteristics. The aromatic hydrocarbons and the aliphatichydrocarbons produce very high bulge.

Oils PU has a high resistance to mineral pure oils (lubrificants, engine oils, combustible oils). Usually, highperformance syntetic oils, due to special addictives contained, can be incompatible with thermosetPU, especially at high temperature.

Greases PU has a high resistance to pure mineral greases (lubrificants greases). Usually, high performancesyntetic greases, due to special addictives contained, can be incompatible with thermoset PU, espe-cially at high temperature.

Fuels Good resistance to petrol without alcohols. In presence of alcohols, thermoset PU can sufferdeterioration. Fuels including aromatic stuffs can produce reversible bulges.

Microorganisms In presence of grime, containing humidity, microorganisms can develop. In case that microbicattack can produce danger, you have to use a special kind of PU.

1 2

7

MEGAPOWER

CORDS

Standard cord .....Megapower is manufactured with helicoidal zinked steel cords as standard.Kevlar .....Kevlar tension cords are suggested for non magnetic, precisely for use in drives with metal

.....detectors, and they also are widely used in food industry.HP .....High performance cords have 25% more strength capacity than standard cords. They are

.....recommended for high repeatability applications.HF .....High flexibility cords can accept smaller pulley and idler diameters than standard cords. They are

.....suitable for multi-shaft drives with severe reverse bending.HPF .....High performance and flexibility cords have 25% more strength capacity like the HP cords, but

.....they are more flexible than the HP cords. They are suggested for high performance and multi-shaft

.....drives. Stainless steel .....Stainless steel cords have 25% less strength capacity than standard cords. They are recommended

.....for water applications.Fiberglass and .....They combine particular mechanical characteristics, such as high flexibility, with resistance to water,polyester cord .....wet and humid environments.

Special compound and cords have to be tested and homologated on application. Megadyne is not responsable forwrong functioning of special products.

COATING

Megapower belts can be manufactured with special coatings, in order to fit many application with different require-ments. For feasability see table at page 23 and for properties see page 24.

IDENTIFICATION CODE

Using the information in the table below, it is possible to identify the correct belt for every application. The code is composed of letters and numbers as the following example:

1) MPW Megapower timing belt.

2) 50 This number indicates the width of requested belt. The value is in mm for a belt with a pitch in mm,and in inches for a belt with a pitch in inches.

3) AT This code composed by letters indicates the selection of profile.

4) 10 This number indicates the standard pitch of the belt. It is expressed in mm.

5) 1500 The last number indicates the length of the belt always in mm regardless of pitch.

6) SPECIAL MANUFACTURES:• special cords as Kevlar or HP or HF or HPF or stainless steel or fiberglass or polyester• special compound as different hardness or different colours• extra coating

1 2 3 4 5 6

MPW + 50 + AT + 10 + 1500 + SPECIAL MANUFACTURES

8

POWER TRANSMISSION CALCULATION PROCEDURE

DETERMINATION OF BELT PITCHThe belt pitch can be determined with the belt selection chart at page 10 (for new applications we suggest ATprofiles), referring to the speed of the small pulley.

DETERMINATION OF SPEED RATIOThe speed ratio represents the ratio of pulley speed n1 to n2, or pulley pitch diameter d2 to d1 or of number of teethz2 to z1.

i = n 1 = z 2 = z 1

SELECTION OF NEEDED TIMING PULLEYSFor the selection of the needed timing pulleys see belt data pages and pulleys catalogue.

CALCULATION OF BELT LENGTHThe belt length can be determined replacing your values in the following formula:

where

Symbol Unit Definition Symbol Unit Definitiont mm pitch FU N transmittable force

b mm belt width FP N pretension

Lw mm belt length i – speed ratio

c mm center distance n1, n2 RPM speed of driver/driven pulley

ß arc of contact d1, d2 mm pitch diameter of driver/driven pulley

c1, c2, c3, c4 safety factors z1, z2 no. of teeth of driver/driven pulley

P kW power zs, zI no. of teeth of small/large pulley

PR kW/cm transmittable power each cm of tooth in mesh

Zm no. of teeth in mesh

Lw[mm]= 2·c·sin · ·+ 1-z1+z2+ ß2

ß180

t2

(z2-z1)

n1

n2

ß= 2·arccost·(z2-z1)

2· ·c�

d2

d1

z2

z1

Fp

d2

z1

cr2

aVn2

n2

�

Mt

z2

Fu

9

The actual belt length is to be taken from those available in the table (see belt page), the closest to the calculated Lw.

CALCULATION OF CENTER DISTANCEThe approximate center distance can be determined replacing your values in the following formula:

CHOICE OF SAFETY FACTORThe total safety factor CTOT is the correction coefficient for the power (to be transmitted) to obtain the design power.

CTOT=C1+C2+C3

C1 is the Acceleration Factor, used when the inverse of speed ratio i is > 1,24

C2 is the Service Factor depending on the number of the operational hours per day (operation time)

1/i 1,00÷1,24 1,25÷1,74 1,75÷2,49 2,50÷3,49 >3,50

C1 0 0,1 0,2 0,3 0,4

h/day 8÷10 10÷16 16÷24 Intermittent Seasonal

C2 0 +0,1 +0,2 -0,1 -0,1

9

C3 is the Load Factor depending on the type of driver used by internal transmission of the driven machine.For C3 values see the table 1 at page 10.

DETERMINATION OF NUMBER OF TEETH IN MESHThe number of the teeth in mesh can be determined replacing your values in the following formula:

If calculated zm is above 15, consider zm=15 (maximum number of teeth in mesh)

DETERMINATION OF BELT WIDTHThe belt width is calculated using the transmittable power PR per tooth in mesh and per cm belt width (see table atbelt page).

c= Lw- ( z 1+ z 2) + 21

4t2

Lw- (z1+z2) -2 t2

2

( z 1- z 2) t�

zm= z1·ß 360

b[mm]= P·cTOT·10

PR·zm

MEGAPOWER

10

CALCULATION PARAMETERS

Office machineryTypewritersComputers, printersTeleprinters, photocopiersMotion-picture projectors and camerasDomestic machineryCentrifugesKitchen appliances, universal slicersSewing machinesDomestic sewing machinesIndustrial sewing machinesLaundry machineryDriersWashing machinesBakery machinery and dough mixersConveyorsLight-duty belt conveyorsBelt conveyor for ore, coal, sandHeavy duty conveyorsElevators, screw conveyorsBucket elevatorsAgitatorsMixers for liquidsMixers for semi-liquidsMachine toolsLathesDrills and grindersMillers and planersWoodworking machineryLathes and band sawsPlaners and disk saws

Type A: electric motors with low starting torque (up to 1,5 times the rated torque).Type B: electric motors with normal starting torque (1,5 to 2,5 times the rated torque).Type C: electric motors with high starting and breaking torque (over 2,5 times the related torque).

Sawmill machineryBrick machineryMixersPug millsTextile machinerySpoolers and warping machinesSpinning and twisting machinesPaper machineryAgitators, calenders, driersPumps, beaters, pulpersPrinting machineryLinotype machines, cutters, foldersRotary pressesScreensDrum screensVibrating screensFans, BlowersExhauster, radial blowersMine ventilators, axial blowersCompressorsHelical compressorsPiston compressorsPumpsCentrifugal and gear pumpsReciprocating pumpsGenerators and excitersElevators and hoistsCentrifugesRubber machineryMillsHammer millsBall, roller and gravel mills

11,11,11

11,1

1,11,2

1,21,41,2

1,11,21,41,41,4

1,21,3

1,21,31,3

1,21,2

1,21,31,31,2

1,21,3

1,31,4

1,61,81,6

1,31,61,81,81,8

1,61,7

1,61,71,7

1,51,6

1,4

1,41,6

1,21,3

1,21,4

1,21,3

1,21,3

1,41,6

1,41,6

1,21,71,41,41,51,5

1,51,7

1,8

1,82

1,61,7

1,61,8

1,61,7

1,61,7

1,82

1,62

1,62,11,81,81,91,9

1,92,1

DriverType A Type B Type C Type A Type B Type C

DriverDriven Machine Driven Machine

1,11,21,21,2

1,11,2

1,21,3

1,41,61,4

1,21,41,61,61,6

1,41,5

1,41,51,5

1,31,4

1,6

1,61,8

1,41,5

1,41,6

1,41,5

1,41,5

1,61,8

1,51,8

1,41,91,61,61,71,7

1,71,9

BELT SELECTION CHART

Table 1 - Load Factor C3

11

BELT CALCULATION EXAMPLE

DRIVER DATAelectric motor P=2kWn=3000RPMLow starting torque

MACHINE DATAWood working machineN=900RPM Max diameter driven pulley 110mmc=300mm

DETERMINATION OF BELT PITCHAccording Belt selection chart at page 10, considering values of P=2kW and n=3000RPM, it is possible to chooseT5 AT5 L T10 or AT10. We choose T10.

DETERMINATION OF SPEED RATIO

i=n1/n2= 3000/900= 3.33

SELECTION OF NEEDED TIMING PULLEYSAccording page 20 we choose z2=36 d2=108.36mm

and from page 20 we choose pulley diameter is for z1=12

Actual speed ratio

CALCULATION OF BELT LENGTHß=166° and L=845mmFrom page 20, closest length to calculates is LW= 850mm.

CALCULATION OF CENTER DISTANCEThe approximate center distance: c=302.6mm

CHOICE OF SAFETY FACTORFrom table page 9, we select c1=0.3 c2=0From Table page 10, we select c3=1.2So cTOT= 1.5

DETERMINATION OF NUMBER OF TEETH IN MESHThe number of the teeth in mesh can be determined replacing your values in the following formula:

zm=z*ß/360=5

DETERMINATION OF BELT WIDTHFrom page 20, for z=12 and n=3000 PR=0.127N so From page 20, closest width is 50mm

The choice for transmission is belt 50 T10 850, driver pulley 56T10 12 and driven pulley 56 T10 36

Fp

d2

z1

cr2

aVn2

n2

�

Mt

z2

i = n1

n2= 3.33=

3000900

= 3= 3612

i = Z2

Z1

Fu

= 5zm = z*ß360

= 47.24mmb = P*cTOT*10

(PR*Zm)

= 32.54mmd1 = d2

i=

108.363.33

MEGAPOWER

The pretension force is the load which has to be applied to the center of one of the driving system's pulleys in staticconditions to avoid the derailing of the belt.

For:

FP= ß2·Fv• sen

2

Fv= • Fu13

MEASURING PROCEDURE

CALCULATION OF PRETENSION FORCE FP

For a correct system functioning and to increase belt life, it is necessary a correct pulley installation: pulleys have tobe parallel and aligned as shown in drawing 1 (correct configuration).If pulleys are not parallel belt could fall during functioning and this can cause damages to the complete equipment.

Maximum accettable disalignment is �max= as shown in drawing 2.

To guarantee a correct belt running, configuration as the drawing 3 has to be avoided.

MEGAPO-WER

m = belt mass per unit length (kg/m) t = free belt span length in meters (m)

Ts = static tension (N) f = frequency of vibration (Hz)

The procedure to measure the tension of the belt is to use a Belt Tensioning GaugingEquipment. This device consists of a small sensing head which is held across the belt to be mea-sured. The belt is then tapped to induce the belt to vibrate at its natural frequency. The vibra-tions are detected and the frequency of vibration is than displayed on the measuring unit.The relation between belt static tension (Ts) and frequency of vibration (f) may be calculatedusing the following formula:

or

BELT INSTALLATION

12

• z<60

Fv= • Fu12

• 60<z<150

Fv= • Fu23

• z>150

where FU= 60 • 106 • P • sin

t • n1• z1

ß2

f= • 12t

Ts

m Ts= 4 • m • t 2• f 2

Drawing 2

�db

Fp

d2

z1

cr2

aVn2

n2

�

Mt

z2

Fu

CAUSES OF BELT FAILURE

13

To ensure that the performance and durability of a toothed belt drive will fully meet requirements of a particularapplication, it is necessary firstly ti accurately select the drive and then to make sure the drive is correctly installed.If this procedure is not followed, the drive life and efficiency may be considerably reduced. The most frequent problems encountered and their probable causes are listed in the table below.

Problems Causes Corrective actions

Abnormal wear of the belt:a) on the side of the tooth

Belt excessively taut Reduce centre distance

Excessive overloading Use a wider belt

Incorrect contour or diameter of pulleyReplace pulley after checking contour ordiameter

b) on the bottom of the tooth Excessive installation tension Reduce centre distance

c) at the tooth root Incorrect diameter of pulleyReplace pulley after checkingdiameter

d) on the side of the belt

Incorrect contour or diameter of pulleyReplace pulley after checkingcontour or diameter

Misalignment or wrong setting of pulleys

Replace pulley after checkingcontour or diameter

Oscillation of the axes and/or of the bearings

Correct the positioning of the pulleys and reinforce the bearings

Flanges bent Straighten flanges

Failure through traction or throughlaceration of the teeth, indicatingcorrosion of the tension member

Diameter of small pulleyi.e. below the minimum

Increase the diameter of the pulleys oruse belts and pulleys of smaller pitch

Excessive moisture Eliminate the moisture

Laceration of belt teethNumber of teeth in mesh less than six

Increase the number of teeth in mesh oruse belts and pulleys of smaller pitch

Excessive load Use a wider belt

Rupture of tension memberExcessive load Use a wider belt

Diameter of pulley below minimum Increase the diameter of the pulleys

Breaks or cracks in the top surface of the belt

Exposure to excessively low temperatures (below -25° C)

Eliminate the low temperature

Softening of the top surface of the belt

Exposure to excessively high temperatures (below +85° C) or operation with excessive amount of oil present

Eliminate the high temperature orreduce the amount of oil present

Apparent elongation of the beltReduction of centre distance due to bearings not being firmly fixed

Restore the initial centre distance and strengthen the bearings

Belt overriding the flangesFaulty installation of the flanges Reinstall the flanges correctly

Misalignment of pulleys Align pulleys

Excessive wear of pulley teeth

Excessive overloading Use a wider belt

Belt excessively taut Reduce the centre distance

Pulley material insufficiently hard Harden the pulley surface

Drive excessively noisy

Pulleys out of line Align pulleys

Excessive installation tension Reduce the centre distance

Excessive load Use a wider belt

Diameter of pulley below minimum Increase the diameter of the pulleys

MEGAPOWER

BELT CHARACTERISTICS

Standard compound: Thermoset PU 88 ShA grey/greenStandard cords: Twisted Zinked SteelStandard width tolerance: + 0,50 / - 0,80 mmStandard thickness tolerance: +/- 0,20 mmSpecial version belts on request, see page 23

BELT WIDTH (mm) 3,2 (012”) 4,8 (019”) 6,4 (025”)PULLEY WIDTH B2 (mm) 5,6 7,1 8,9BELT WEIGHT (gr/cm) 0,035 0,053 0,073

TRANSMITTABLE POWER (kW/cm of tooth in mesh)

PULLEYS (for more details see our pulleys catalogue)

BELT LENGTHS AND TOLERANCES (according ISO 5296-1)

No. teeth10121314151617181920212224

Dp6,477,768,419,069,70

10,3511,0011,6412,2912,9413,5814,2315,52

De5,967,257,908,559,199,84

10,4911,1311,7812,4313,0713,7215,01

No. teeth26283032343640424448606572

Dp16,8118,1119,4020,7021,9923,2925,8727,1728,4631,0538,8142,0446,57

De16,3017,6018,8920,1921,4822,7825,3626,6627,9530,5438,3041,5346,06

n\z60080010001400180020003000400050008000

100,001370,001720,002040,002650,003200,003460,004650,005680,006590,00886

120,001640,002060,002450,003180,003840,004160,005580,006810,007910,01063

140,001910,002400,002860,003710,004480,004850,006510,007950,009230,01240

160,002180,002750,003270,004240,005130,005540,007440,009080,010550,01417

180,002460,003090,003680,004770,005770,006240,008370,010220,011870,01594

200,002730,003430,004090,005300,006410,006930,009300,011360,013190,01771

240,003280,004120,004910,006360,007690,008310,011150,013630,015830,02125

260,003550,004460,005320,006890,008330,009010,012080,014760,017150,02302

280,003820,004810,005730,007420,008970,009700,013010,015900,018460,02480

300,004100,005150,006130,007950,009610,010390,013940,017030,019780,02657

320,004370,005490,006540,008480,010250,011090,014870,018170,021100,02834

360,004910,006180,007360,009540,011530,012470,016730,020440,023740,03188

400,005460,006860,008180,010600,012810,013860,018590,022710,026380,03542

CodeLength (mm)No. of teethLength tolerance (mm)

80055111,7

55

80057115,8

57

80060121,9

60

80070142,2

70

80072146,3

72

80075152,4

75

80076154,4

76

80079160,5

79

80080162,5

80

80082166,6

82

80088178,8

88

80091184,9

91

80092186,9

92

80096195,1

96

80101205,2101

+/- 0,28


80102207,2102

80103209,2103

80105213,4105

80110223,5110

80114231,6114

80118239,8118

80120243,8120

80130264,1130

80132268,2132

80135274,3135

80140284,4140

80145294,6145

80150304,8150

80155314,9155

80175355,6175

80190386,1190


80200406,4200

80221449,1221

80256520,1256

80280568,9280

80285579,1285

80308625,8308

80332674,6332

80352715,2352

80360731,5360

80395802,6395

80405822,9405

80412837,1412

80432877,8432

80454922,5454

80485985,5485

+/- 0,28 +/- 0,32

+/- 0,36 +/- 0,42 +/- 0,48 +/- 0,56

MEGAPOWER MXL

14

B1B2

L

Dp De d Dm Df

MEGAPOWER XL


Standard compound: Thermoset PU 88 ShA grey/greenStandard cords: Twisted Zinked SteelStandard width tolerance: + 0,50 / - 0.80 mmStandard thickness tolerance: +/- 0,25 mmSpecial version belts on request, see page 23

BELT WIDTH (mm) 6,4 (025”) 7,9 (031”) 9,4 (037”)PULLEY WIDTH B2 (mm) 8,9 10,4 12,2BELT WEIGHT (gr/cm) 0,121 0,153 0,182




No. teeth101112131415161718202224

Dp16,1717,7919,4021,0222,6424,2625,8727,4929,1132,3435,5738,81

De15,6617,2818,8920,5122,1323,7525,3626,9828,6031,8335,0738,30

No. teeth262830323640424448566072

Dp42,0445,2848,5151,7458,2164,6867,9171,1577,6290,5597,02

116,43

De41,5344,7748,0051,2357,7064,1767,4070,6477,1190,0496,51

115,92

n\z1002006001000150020003000400050008000

100,00160,00290,00750,01160,01620,02060,02860,03590,04270,0612

120,00190,00350,00910,01390,01950,02470,03430,04310,05130,0735

140,00220,00410,01060,01620,02270,02880,04000,05020,05980,0857

160,00260,00470,01210,01860,02600,03290,04570,05740,06840,0980

180,00290,00530,01360,02090,02920,03700,05140,06460,07690,1102

200,00320,00590,01510,02320,03250,04110,05710,07180,08550,1225

240,00380,00700,01810,02780,03900,04940,06850,08610,10260,1470

280,00450,00820,02110,03250,04550,05760,07990,10050,11970,1715

320,00510,00940,02410,03710,05200,06580,09140,11480,13680,1960

400,00640,01170,03020,04640,06500,08230,11420,14350,17100,2450

480,00770,01410,03620,05570,07800,09880,13700,17220,20510,2940

600,00960,01760,04530,06960,09750,12340,17130,21530,25640,3675

720,01150,02110,05430,08350,11700,14810,20560,25840,30770,4410


60152,4

30

70177,8

35

7619338

80230,2

40

90228,6

45

10025450

110279,4

55

120304,8

60

130330,2

65

134340,3

67

140355,6

70

15038175

160406,4

80+/- 0,28 +/- 0,32 +/- 0,36


170431,8

85

180457,2

90

190482,6

95

194492,8

97

200508100

210533,4105

220558,8110

230584,2115

240609,6120

250635125

260660,4130

270685,8135

288731,5144

290736,6145

300762150

356904,2178

4141051,5

207


4501143225

5661437,6

283

+/- 0,36 +/- 0,42 +/- 0,48 +/- 0,56 +/- 0,64

+/- 0,64 +/- 0,76

15

MEGAPOWER

B1B2

L

Dp De d Dm Df


Standard compound: Thermoset PU 88 ShA grey/greenStandard cords: Twisted Zinked SteelStandard width tolerance: +/- 0,80 mmStandard thickness tolerance: +/- 0,30 mmSpecial version belts on request, see page 23

BELT WIDTH (mm) 12,7 (050”) 19,1 (075”) 25,4 (100”)PULLEY WIDTH B2 (mm) 19 25,4 29,7BELT WEIGHT (gr/cm) 0,437 0,661 0,878




No. teeth101112131416182022242628

Dp30,3233,3536,3839,4142,4548,5154,5760,6466,7072,7778,8384,89

De29,5632,5935,6238,6541,6947,7553,8159,8865,9472,0178,0784,13

No. teeth303234364042444852566072

Dp90,9697,02

103,08109,15121,28127,34133,40145,53157,66169,79181,91218,30

De90,2096,26

102,32108,39120,52126,58132,64144,76156,90169,03181,15217,54

n\z1002006001000150020003000400050008000

100,00500,00890,02190,03280,04470,05530,07410,09030,10470,1399

120,00600,01070,02630,03930,05360,06640,08890,10840,12560,1679

140,00700,01250,03070,04590,06250,07750,10370,12640,14660,1958

160,00790,01430,03510,05240,07150,08850,11850,14450,16750,2238

180,00890,01610,03940,05900,08040,09960,13330,16260,18850,2518

200,00990,01780,04380,06550,08940,11070,14820,18060,20940,2798

220,01090,01960,04540,07210,09830,12180,16300,19870,23030,3078

240,01190,02140,04820,07860,10720,13280,17780,21680,25130,3357

280,01390,02500,05300,09170,12510,15500,20740,25290,29320,3917

300,01490,02680,05680,09830,13400,16600,22220,27090,31410,4197

320,01590,02850,06060,10480,14300,17710,23700,28900,33500,4477

360,01790,03210,06810,11790,16080,19920,26670,32510,37690,5036

400,01990,03570,07570,13110,17870,22140,29630,36130,41880,5596


86218,6

23+/- 0,28

124314,3

33

15038140

173438,2

46

187476,2

50+/- 0,36

202514,4

54

210533,4

56

225571,5

60+/- 0,42

240609,6

64

255647,7

68

270685,8

72

285723,9

76

30076286

322817,9

92

345876,3

98+/- 0,56

367933,4104

+/- 0,32 +/- 0,48


390990,6104

4201066,8

112

4501143120

4801219,2

128

5101295,4

136

5401371,6

144

5701447,8

152

6001524160

+/- 0,64 +/- 0,76

MEGAPOWER L

16

B1B2

L

Dp De d Dm Df

MEGAPOWER H



BELT WIDTH (mm) 19,1 (075”) 25,4 (100”) 38,1 (150”) 50,8 (200”) 76,2 (300”)PULLEY WIDTH B2 (mm) 25,4 29,7 46 59 85BELT WEIGHT (gr/cm) 0,745 1,059 1,594 2,121 3,194




No. teeth141516182021222324252628

Dp56.6060.6464.6872.7780.8584.8988.9492.9897.02

101.06105.11113.19

De55.2359.2763.3171.4079.4883.5287.5791.6195.6599.69

103.74111.82

No. teeth303234363840444852586072

Dp121.28129.36137.45145.53153.62161.70177.87194.04210.21234.47242.55291.06

De119.91127.99136.08144.16152.25160.33176.50192.67208.84233.10241.18289.69

n\z1002006001000150020003000400050008000

140,01280,02290,05630,08420,11490,14230,19050,23220,26920,3597

160,01420,02550,06260,09360,12760,15810,21160,25800,29910,3997

180,01630,02930,07200,10770,14680,18180,24340,29680,34400,4597

200,01850,03310,08140,12170,16590,20560,27510,33550,38890,5196

220,01990,03570,08760,13110,17870,22140,29630,36130,41880,5596

240,02130,03820,09390,14040,19150,23720,31750,38710,44870,5995

260,02340,04210,10330,15450,21070,26090,34930,42580,49360,6595

280,02550,04590,11270,16850,22980,28460,38100,46450,53840,7194

300,02770,04970,12210,18260,24900,30840,41280,50320,58330,7794

320,02930,05260,12910,19310,26330,32620,43660,53220,6170

360,03410,06110,15020,22470,30640,37950,50800,61930,7179

400,03620,06500,15960,23870,32560,40320,53980,65800,7628

440,03940,07090,17410,26030,35500,43970,58860,71760,8319


230584,2

46

240609,6

48

270685,8

54

30076260

330838,2

66

360914,4

72

390990,6

78

4201066,8

84

450114390

4801219,2

96

5101295,4

102+/- 0,42 +/- 0,56 +/- 0,64 +/- 0,76 +/- 0,88

17

MEGAPOWER

B1B2

L

Dp De d Dm Df

18



DOUBLETOOTHED BELT LENGTHS



BELT LENGTHS AND TOLERANCES (according DIN 7721-1)

No. teeth101112131415161718192021

Dp7,968,759,55

10,3411,1411,9412,7313,5314,3215,1215,9216,71

De7,458,259,009,80

10,6011,4012,2013,0013,8014,6015,4016,20

No. teeth222426283032364044486072

Dp17,5119,1020,6922,2823,8725,4628,6531,8335,0138,2047,7557,30

De17,0018,5520,1521,7523,3524,4528,1031,3034,5037,7047,2555,20

n\z60080010001400160020003000400050008000

100,001950,002450,002920,003790,004190,004950,006640,008110,009420,01265

120,002340,002940,003510,004540,005030,005940,007970,009730,011300,01518

140,002730,003430,004090,005300,005860,006930,009300,011360,013190,01771

160,003120,003920,004670,006060,006700,007420,010620,012980,015070,02024

180,003510,004410,005260,006810,007540,008910,011950,014600,016960,02277

200,003900,004900,005800,007570,008380,009900,013280,016220,018840,02530

220,004290,005390,006420,008330,009220,010890,014610,017850,020730,02783

240,004680,005880,007000,009090,010050,011880,015940,019470,022610,03036

260,005070,006370,007590,009840,010890,012870,017260,021090,024490,03289

280,005460,006860,008170,010600,011730,013860,018590,022710,026380,03542

300,005850,007360,008770,011360,012570,014850,019920,024330,028260,03795

360,007020,008830,010520,013630,015080,017820,023900,029200,033910,04554

400,0078

0,009810,011690,015140,016760,019800,026560,032450,037680,05060

Length (mm)No. of teethLength tolerance

457,5183

+/- 0,36

(only with polyester cords)

Length (mm)No. of teethLength tolerance (mm)

12048

14558

16064

177,571

18072

182,573

20080

21084

23092

24598

265106

277,5111

285114

290116

305122

317,5127

330132

342,5137

380152

+/- 0,28 +/- 0,32


420168

480192

500200

540216

600240

620248

650260

680272

700280

780312

880352

915366

950380

1185474

+/- 0,36 +/- 0,42 +/- 0,48 +/- 0,56 +/- 0,64

MEGAPOWER T2,5 - T2,5DL

BELT WIDTH (mm) 4 6 8 10 12PULLEY WIDTH B2 (mm) 8 10 12 14 16BELT WEIGHT (gr/cm) 0,046 0,070 0,093 0,120 0,143

B1B2

L

Dp De d Dm Df

MEGAPOWER T5 - T5DL


1470294

1500300

1580316

1955391

19






* Available also without GAP


n\z1002006001000150020003000400050008000

100,00170,00310,00790,01220,01710,02170,03010,03780,04500,0645

120,00200,00370,00950,01470,02050,02600,03610,04530,05400,0774

140,00240,00430,01110,01710,02390,03030,04210,05290,06300,0903

160,00270,00490,01270,01950,02740,03460,04810,06040,07200,1032

180,00300,00560,01430,02200,03080,03900,05410,06800,08100,1160

200,00340,00620,01590,02440,03420,04330,06010,07550,09000,1289

240,00400,00740,01910,02930,04110,05200,07210,09070,10800,1547

280,00470,00860,02220,03420,04790,06280,08420,10580,12600,1805

360,00610,01110,02860,04400,06160,07800,10820,13600,16200,2321

420,00710,01300,03330,05130,07180,09100,12620,15860,18890,2708

480,00810,01480,03810,05860,08210,10390,14430,18130,21590,3095

540,00910,01670,04290,06590,09240,11690,16230,20400,24290,3481

600,01010,01850,04760,07330,10260,12990,18030,22660,26990,3868


41082

46092

590118

620124

685137

750150

815163

840168

860172

940188

1100220

+/- 0,36 +/- 0,42 +/- 0,48 +/- 0,56 +/- 0,64


12024

15030

16533

18036

18537

20040

21042

21543

22044

22545

24549

25050

25551

26052

27054

27555

28056

29559

30060

30561

+/- 0,28


33066

34068

35070

35571

36573

37575

39078

40080

41082

42084

42585

44088

44589

45090

45591

46092

47595

48096

500100

510102

515103

525105

+/- 0,32 +/- 0,36


545109

550110

560*112

575115

590118

600120

610122

620124

630126

640128

650130

660132

675135

690138

700140

720144

725145

750150

765153

780156

800160

815163


830166

840168

850170

860172

885177

900180

920184

940188

990198

1075215

1100220

1160232

1200240

1215243

1275255

1280256

1315263

1355271

1380276

1440288

+/- 0,42 +/- 0,48 +/- 0,56

+/- 0,56 +/- 0,64 +/- 0,76

+/- 0,76 +/- 0,88

BELT WIDTH (mm) 6 8 10 12 16 20 25PULLEY WIDTH B2 (mm) 12 13 15 17 21 25 30BELT WEIGHT (gr/cm) 0,116 0,152 0,194 0,237 0,249 0,390 0,497

No. teeth101214151618192022242526

Dp15,9219,1022,2823,8725,4628,6530,2431,8335,0138,2039,7941,38

De15,0918,2721,4523,0424,6427,8229,4131,0034,1937,3738,9640,55

No. teeth2728303236404244485460

Dp42,9744,5647,7550,9357,3063,6666,8570,0376,3985,9495,49

De42,1443,7346,9250,1056,4762,9366,0269,2075,5785,0994,67

MEGAPOWER

B1B2

L

Dp De d Dm Df

20



BELT WIDTH (mm) 10 12 16 20 25 32 50 75PULLEY WIDTH B2 (mm) 15 17 21 25 30 37 56 80BELT WEIGHT (gr/cm) 0,494 0,504 0,683 0,861 1,082 1,386 2,174 3,276




* Available also without GAP


No. teeth1214151618192022242526

Dp38,2044,5647,7550,9357,3060,4863,6670,0376,3979,5882,76

De36,2542,7145,9049,0855,4558,6361,8168,1874,5577,7380,91

No. teeth27283032364044485460

Dp85,9489,1395,49

101,86114,59127,32140,06152,79171,89190,99

De84,1087,2893,65

100,01112,74125,48138,21150,94170,03189,14

n\z1002006001000150020003000400050008000

120,00850,01530,03760,05620,07660,09490,12700,15480,17950,2398

140,00990,01780,04380,06550,08940,11070,14820,18060,20940,2798

160,01140,02040,05010,07490,10210,12650,16930,20640,23930,3198

180,01280,02290,05630,08420,11490,14230,19050,23220,26920,3597

200,01420,02550,06260,09360,12760,15810,21160,25800,29910,3997

220,01560,02800,06890,10300,14040,17390,23280,28380,32900,4397

240,01700,03060,07510,11230,15320,18970,25400,30970,35900,4796

260,01850,03310,08140,12170,16590,20560,27510,33550,38890,5196

280,01990,03570,08760,13110,17870,22140,29630,36130,41880,5596

300,02130,03820,09390,14040,19150,23720,31750,38710,44870,5995

360,02550,04590,11270,16850,22980,28460,38100,46450,53840,7194

480,03410,06110,15020,22470,30640,37950,50800,61930,7179

540,03830,06880,16900,25270,34470,42690,57150,69670,8077


26026

53053

63063

66066

72072

84084

92092

98098

1100110

1210121

1240124

1250125

1320132

1350135

1420142

1610161

1880188

+/- 0,28 +/- 0,42 +/- 0,48 +/- 0,56 +/- 0,64 +/- 0,76 +/- 0,88

MEGAPOWER T10 - T10DL


26026

32032

34034

37037

39039

40040

41041

44044

45045

48048

50050

53053

55055

56056

600*60

61061

630*63

65065

66066

68068

69069

+/- 0,32 +/- 0,36 +/- 0,42 +/- 0,48


70070

720*72

73073

75075

78078

800*80

81081

84084

85085

88088

89089

900*90

91091

920*92

95095

96096

97097

98098

1000100

1010101

1050105

+/- 0,48 +/- 0,56 +/- 0,64


1080108

1100110

1110111

1140114

1150115

1200120

1210121

1240124

1250125

1300130

1320132

1350135

1390139

1400140

1420142

1440144

1450145

1460146

1500150

1560156


1600160

1610161

1700170

1750175

1780178

1880188

1960196

2250225

+/- 0,64 +/- 0,76

+/- 0,88 +/- 1,04

B1B2

L

Dp De d Dm Df

MEGAPOWER AT5

21



BELT WIDTH (mm) 6 8 10 12 16 20 25PULLEY WIDTH B2 (mm) 12 13 15 17 21 25 30BELT WEIGHT (gr/cm) 0,185 0,253 0,316 0,378 0,508 0,640 0,800




No. teeth1214151618192022242526

Dp19,1

22,2823,8725,4628,6530,2431,8335,0138,2039,7941,38

De17,8721,0522,6424,2427,4229,0130,6033,7936,9738,5640,15

No. teeth2728303236404244486068

Dp42,9744,5647,7550,9357,3063,6666,8570,0376,3995,49

108,23

De41,7443,3346,5249,7056,0762,4365,6268,8075,1794,27

107,01

n\z1002006001000150020003000400050008000

120,00270,00490,01270,01950,02740,03470,04830,06090,07270,1046

140,00310,00570,01480,02280,03200,04050,05640,07100,08480,1220

160,00360,00650,01690,02600,03650,04630,06450,08120,09690,1395

180,00400,00740,01900,02930,04110,05210,07250,09130,10900,1569

200,00440,00820,02110,03250,04570,05790,08060,10150,12110,1743

220,00490,00900,02320,03580,05020,06370,08860,11160,13320,1918

240,00530,00980,02530,03900,05480,06950,09670,12180,14530,2092

260,00570,01060,02740,04220,05930,07530,10470,13190,15740,2266

280,00620,01140,02950,04550,06390,08110,11280,14210,16950,2441

320,00710,01310,03380,05200,07300,09260,12890,16240,19380,2790

440,00980,01800,04640,07160,10040,12740,17730,22330,26640,3836

600,01330,02450,06330,09760,13700,17370,24170,30450,36330,5230

680,01510,02780,07170,11060,15520,19690,27390,34510,41170,5928


22545

25551

27555

28056

30060

33066

34068

37575

39078

42084

45090

45591

48096

500100

525105

545109

600120

610122

620124

630126

+/- 0,28 +/- 0,32 +/- 0,36 +/- 0,42


660132

670134

710142

720144

750150

780156

825165

860172

975195

1050210

1125225

1500300

2000400

+/- 0,48 +/- 0,56 +/- 0,64 +/-0,76 +/-1,04

MEGAPOWER

B1B2

L

Dp De d Dm Df

22



BELT WIDTH (mm) 10 12 16 20 25 32 50 75PULLEY WIDTH B2 (mm) 15 17 21 25 30 37 56 80BELT WEIGHT (gr/cm) 0,578 0,707 0,952 1,184 1,469 1,905 3,005 4,344




No. teeth1516181920222425262728

Dp47,7550,9357,3060,4863,6670,0376,3979,5882,7685,9489,13

De45,9049,0855,4558,6361,8168,1874,5577,7380,9184,1087,28

No. teeth30323638404244485460

Dp95,49

101,86114,59120,96127,32133,69140,06152,79171,89190,99

De93,65

100,01112,74119,14125,48131,87138,21150,94170,07189,14

n\z1002006001000150020003000400050008000

150,01380,02510,06330,09610,13310,06690,22810,28310,33350,4648

180,01660,03010,07590,11540,15970,20030,27370,33970,40020,5578

200,01840,03350,08440,12820,17740,22250,30420,37750,44470,6198

220,02030,03680,09280,14100,19520,24480,33460,41520,48910,6818

240,02210,04020,10120,15380,21290,26700,36500,45300,53360,7438

260,02400,04350,10970,16660,23070,28930,39540,49070,57810,8057

280,02580,04690,11810,17940,24840,31160,42580,52850,62250,8677

300,02760,05020,12660,19230,26610,33380,45620,56620,66700,9297

380,03500,06360,16030,24350,33710,42280,57790,71720,8449

420,03870,07030,17720,26920,37260,46730,63870,79270,9338

480,04420,08040,20250,30760,42580,53410,73000,9060

540,04980,09040,22780,34610,47910,60090,82121,0192

600,05530,10040,25310,38450,53230,66760,91251,1325


37037

50050

56056

58058

60060

61061

66066

70067

73073

78078

80080

81081

84084

88088

89089

92092

96096

98098

1000100

1010101

+/- 0,32 +/-0,36 +/- 0,42 +/- 0,48 +/- 0,56 +/- 0,64


1050105

1080108

1100110

1150115

1190119

1200120

1210121

1220122

1230123

1240124

1250125

1280128

1300130

1320132

1350135

1360136

1400140

14201142

14801148

15001150

+/- 0,64 +/- 0,76


1600160

1630163

1700170

1720172

1800180

1860186

1940194

+/- 0,88

MEGAPOWER AT10

B1B2

L

Dp De d Dm Df

23

O = Ex stock M = On request with minimum quantityR = On request without minimum quantity X = Not available

MEGAPOWER FEASIBILITY TABLE

MXL XL L H T2,5T2 T5 T10 T2,5DL T5DL T10DL AT5 AT10

Steel cords

High Flexibility cords

High Performance cords

High Performance Flexibility

Kevlar cords

Fiberglass cords

Polyester cords

Stainless steel cords

Pu yellow coating 50 ShA cover

Porol mousse 10 ShA cover

Linatex 42 ShA cover

Tenax 40 / 45 ShA cover

White alimentary rubber 70 ShA cover

Neoprene rubber 70 ShA cover

Gummy correx 48 ShA cover

NBR 70 ShA cover

Hypalon 60 ShA cover

Honey comb 45 ShA cover

O

X

X

X

R

X

M

X

O

X

X

X

R

R

M

M

O

X

X

X

R

M

M

M

O

X

X

X

M

M

M

M

O

X

M

X

M

X

M

X

O

M

M

M

M

M

M

M

O

M

M

M

M

M

M

M

O

X

X

X

X

X

M

X

O

M

X

X

M

X

X

M

O

M

X

X

M

X

X

M

O

M

M

M

M

X

X

M

O

M

M

M

M

X

X

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

10

18

20

-

-

-

-

-

-

-

-

-

10

30

30

-

-

-

-

-

-

-

-

-

15

60

60

-

-

-

-

-

-

-

-

-

14

80

60

-

-

-

-

-

-

-

-

-

10

18

20

-

-

-

15

30

30

-

-

-

10

30

30

10

30

30

15

40

60

12

30

30

12

60

60

12

50

50

15

100

100

14

80

80

10

18

20

-

-

-

-

-

-

-

-

-

10

30

30

10

30

30

-

-

-

-

-

-

12

60

60

12

50

50

-

-

-

-

-

-

15

60

25

12

40

25

25

60

40

20

40

40

15

120

50

15

80

50

25

150

80

16

100

60

Min no. teeth pulley st. cords

Min outside idler dia

Min inside idler dia

Min no. teeth pulley HF cords



Min no. teeth pulley HP cords



Min no. teeth pulley HPF cords



12

20

20

-

-

-

12

20

20

-

-

-

10

30

20

13

35

35

10

30

20

13

35

35

15

60

60

18

65

65

15

60

60

18

65

65

14

80

60

18

90

65

14

80

60

18

80

65

12

20

20

-

-

-

12

20

20

-

-

-

12

30

30

15

40

40

12

30

30

15

40

40

15

60

60

15

70

70

15

60

60

15

70

70

--

-

-

-

-

-

12

20

20

-

-

-

12

30

30

-

-

-

-

-

-

15

40

40

15

60

60

-

-

-

-

-

-

15

70

70

15

60

25

-

-

-

-

-

-

15

65

60

15

120

50

-

-

-

-

-

-

19

110

110

Min no. teeth pulley kevlar cords



Min no. teeth pulley fiberglass cords



Min no. teeth pulley polyester cords



Min no. teeth pulley stainless steel cords



10

18

20

-

-

-

-

-

-

-

-

-

12

20

20

-

-

-

-

-

-

-

-

-

O

X

X

X

M

X

M

X

M

M

M

M

M

M

M

M

M

M

MEGAPOWER

24

COATINGS AND COVER PROPERTIES

Megapower timing belts can be coated with several materials on the backside to obtain specific properties required (higher friction coefficient, higherabrasion reistance, higher oil resistance, etc.).

(1) Staticaveragevaluesfor steelguides.

Cover type

Porolmousse

Linatex Tenax 40Tenax

Standard

White Rubberfor foodindustry

NeopreneGummy

Correx ambraparablond

NBR Hypalon HoneycombFoamed

polyurethane

Rawmaterial

open cellneoprene

rubber

naturalrubber

naturalrubber

naturalrubber

syntheticrubber

syntheticrubber

naturalrubber

nitrilicrubber rubber natural

rubberfoamed

polyurethane

Hardness(ShA) 10 42 40 45 70 70 48 70 60 45 50

Colour black red red red white gray/black light brown white white red yellow/gray

Coating andbelt cohesionmethod

by gluing by gluing by vulcanization

by vulcanization

by vulcanization

by vulcanization

by vulcanization

by vulcanization

by vulcanization by gluing by spray

Thicknessrange (mm) 2 till 15 0,8 till 15 0,8 till 15 0,8 till 15 0,8 till 15 0,8 till 15 0,8 till 15 0,8 till 15 0,8 till 15 4,5 0,5 till 8

Tolerance oncoatingthickness

+/- 0,3 +/- 0,3 +/- 0,3 +/- 0,3 +/- 0,3 +/- 0,3 +/- 0,3 +/- 0,3 +/- 0,3 +/- 0,5 +/- 0,3

Workingtemperaturerange (°C)

-10 +60 -20 +50 -20 +60 -20 +60 0 +120 -10 +100 -20 +60 0 +120 0 +160 -20 +60 -20 +60

Frictioncoefficient (1) 0,7 0,75 0,75 0,7 0,65 0,6 0,6 0,6 0,6 0,6 0,4

Waterresistance good very good very good very good good very good very good good good very good good

Abrasionresistance intermediate very good very good very good intermediate good very good intermediate intermediate very good very good

Oilresistance intermediate low low low good good low good good low very good

FDAapproved no no no no no no no no no no no

Min. pulleydia = coatingthickness

x 25 x 30 x 30 x 30 x 35 x 35 x 30 x 35 x 35 x 30 x 25

On customer request and with a minimum quantity is possibile to produce Megapower with several colours.Different colour doesn’t influence belt technical properties so mechanical features are same as standard grey/greenbelt.

COLOUR

Megadyne have been producing specialized belting for many years. Our in-house facilities enable us to producebelts with special holes for vacuum applications, belts with special backings/grounds finishes for high toleranceapplications. We can remove individual teeth and perforate the timing belt as required.

MECHANICAL REWORK

A belt back can be ground to achieve a precise belt thickness as an adjunct to precision drives. When belt back grind-ing to a tolerance is required, the total thickness, including the tooth, must be specified. A grinding tolerance of +/- 0,2 mm is achievable with a level finish (i.e. thickness will not vary greatly around the belt).

BACK GRINDING

Longitudinal rework along the belt back is possibile on covered and uncovered belts. The profile can be machinedprecisely for required function. The measurement is given as the depth on the belt back. Most widths and lengthsare available.

LONGITUDINAL REWORK

The rework of the tooth profile can be very useful, i.e. improving the steering effect with guide rails. The reworkdimension is given from the top of the tooth.

REWORK ON BELT TEETH

Holes in timing belts can be for vacuum or air film conveying or as clearance for assembly mechanisms. Stops andcams can be attached through the holes. Customized tooling may be required depending on the layout and dimen-sions of holes required.

HOLES IN TIMING BELTS

Single and multiple tooth removal is available to your requirement, for applications in handling and conveying technology.

SINGLE TOOTH REMOVAL

SPECIAL EXECUTIONS

25

26

Belts and sleevesCustomer can choose the right Megapowerdepending on his business features:belts are finished and ready to use, whilesleeves can be stored and cut at requested widthby end-users

Special profilesMegapower belts can be manufactured on customer request also with pitch T2, RPP3, RPP8, STD3, MTD5

AT20 for high powerMegapower belts are available also in AT20 pitch,with standard or special cords, to work in veryhigh power transmission applications

Directly moulded special cleatsSpecial cleats and flat profiles can be directlymoulded with the belt, being a part of it and giving higher mechanical characteristics

Tracking belts for liftsCustom design moulded belt, with high strengthcapacity and helical special teeth, high coefficient of friction and very low noiselevel, used as tracking belts in lift applications

SPECIAL EXECUTIONS PHOTOS

Vacuum applicationsMegapower belts for vacuum applications, coatedwith Tenax or other coatings, with grinded teeth,holes and slots (perpendicular or sloping) for vacuum transmission

27

Packing industryParticular Megapower with directly moulded carriers and pushers, engineered to meet very special customer requests

Special carriersMegapower customised belt with directly mouldedcouriers, developed following customer design

Office automationMegapower belt with special moulded cleats, typically used used in office automation and printing machines

Carding machinesSpecial moulded belt with cylindrical cleats, used in textile industry

Textile industrySpecial moulded belt used in textile industry, manufactured in red or in blue polyurethane

MEGAPOWER

PULLEYS AND TIMING BARS

28

Imperial

HTD

METRIC

RPP

MXL XL L H XH XXH HG

3M 5M 8M 14M

T2.5 T5 T10 T20 AT3 AT5 AT10AT20 TG5 TG10 TG20 ATG10

RPP5 RPP8 RPP14

Pulleys can be provided both in standard design, according to ISO specifications, and engineered on customerrequests.

Manufactured in aluminium, steel and cast iron, Megadyne pulleys are available with or without steel flanges andsurface treatment.

29

USEFUL FORMULAS AND CONVERSION TABLE

30

To convert from to multiply by

CV HP 0,9863201

CV kcal/h 63,24151

CV W 735,4988

CV kW 0,7354988

CV kgf � m/s 75

CV lbf � ft/s 542,476

HP CV 1,01387

HP kcal/h 641,1865

HP W 745,6999

HP kW 0,7456999

HP kgf � m/s 76,04022

HP lbf � ft/s 550

in m 0,0254

in cm 2,54

in mm 25,4

in ft 0,083

in2 m2 0,00064516

in2 cm2 6,4516

in2 mm2 645,16

in2 ft2 0,006944444

in3 m3 1,63871·10-5

in3 cm3 16,38706

in3 mm3 16387,06

in3 ft3 0,000578704

To convert from to multiply by

J CV � h 3,77673·10-7

J HP � h 3,72506·10-7

J kWh 2,77778·10-7

kg lb 2,204623

kgf N 9,80665

kgf lbf 2,204623

kgf � m/s CV 0,01333333

kgf � m/s W 9,80665

kgf � m/s kW 0,00980665

kW CV 1,359622

kW kcal/h 859,8452

kW W 1000

kW kgf � m/s 101,9716

kW lbf � ft/s 737,5621

lb kg 0,4535924

lb kgf 0,4535924

lb N 4,448222

N kgf 0,1019716

N lbf 0,2248089

W CV 0,001359622

W HP 0,001341022

W kcal/h 0,8598452

W kW 0,001

W kgf � m/s 0,1019716

W lbf � ft/s 0,7375621

SPEED

V: peripheral speed [m/s]n1: rotation speed [RPM]d1: pulley diameter [mm]

POWER

P: power [kW]Fu: peripheral force [N]Mt: drive torque [Nm]n1: rotation speed [RPM]d1: pulley diameter [mm]

FORCES AND TORQUE

Fu: peripheral force [N]Mt: drive torque [Nm]P: power [kW]n1: rotation speed [RPM]d1: pulley diameter [mm]V: peripheral speed [m/s]

V= d1·n1

19100n1=

V·19100 d1

Fu= 19,1·106·Pd1·n1

Mt= P·9550

n1

P= Fu·d1·n1

19,1·106P=

Mt·n1

9550P=

Fu·V1000

Mt= Fu·d1

2000Mt=

P·d1

2·V

Fu= 2000·Mt

d1Fu= P·103

d1

d1= V·19100

n1

NOTES

31

The data given in this catalogue are updated at theday of printing and are not intended as a guarantee:Megadyne S.p.A. reserve the right to modify the characteristics of the belts described herein withoutany prior notice.

Printed by

Camedda & C. - Turin

Edition July 2008

pu timing belts - caldic techniek

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