instructions and maintenance - saehan system€¦ · · 2005-12-06124 bearing line features...
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Instructions and maintenance
124 B E A R I N G L I N E
FEATURES
S H O U L D E R E D S H A F T S
Series F supports have been designed:
1 To be adaptable to shaft deflections.1 To resist chemical agents.1 To support radial loads.
P L A I N S H A F T S
Supports for shafts with constant diameter(plain) have main characteristics:
1 Compensation for mistakes in alignment.1 Adaptability to shaft deflections.1 Resistance against chemical agents.1 Support of radial loads.1 Support of light axial loads.1 High load capacity.
F E A T U R E S
1 "Bearing Line" supports guarantee a highreliability.
1 Modern technology used in all phases ofworkmanship and first quality materialsensure a quality product.
1 "Bearing Line" supports can be used in mostapplications.The main advantages are theirlight weight, their resistance against chemicalagents and corrosion, their mechanicalstrength, their easy cleaning, and their safetyfeatures.
This picture shows the supportsurface of one of our supports(1) compared with the surfaceof cast iron supports (2 - 3) ofwell known brands.
1
23
clean up to 50 °C 1 - 2 years
clean 50 ÷ 70 °C 4 - 8 months
clean 70 ÷ 100 °C 1 - 3 months
dirty up to 70 °C 2 - 8 weeks
dirty 70 ÷ 100 °C 2 - 4 weeks
humid + wet – 1 - 2 weeks
F/FC 1/8” GAS
SFL/SFL-Z M6
UCF/UCF-R 1/8” GAS
UCFC/UCFC-Y 1/8” GAS
UCFH/UCFH-R M6
UCFL/UCFL-W 1/8” GAS
UCHA/UCHA-R M6
UCHE/UCHE-R M6
UCP/UCP-R M6
UCPA/UCPA-R M6
UCT/UCT-R M6
UFL/UFL-Z M6
US/US-R M6
UCFQ/UCFQ-R M6
CS/CS-R M6
CL/CL-R M6
UCFT M6
UCFA/UCFA-R M6
UCFG/UCFG-R M6
SQL M6
125B E A R I N G L I N E
All "Bearing Line" supports are normallysupplied with grease-nipple (picture 1). In thetable you find the grease-nipple correspondingto their support. If the support is uneasy toreach, or in case of centralized lubrication, arapid coupling joint (Cod. 50005) for tube inRilsan Ø4 mm is available (picture 2).
T Y P E O F L U B R I C A N T
The recommended lubricant is grease withlithium soap (consistency 21/2 or 3) which iswater resistant and can be used withtemperatures from -20° C to + 120° C.
P R E - L U B R I C A T I O N
Initial lubrication is only recommended forsupports series F1200 - FC 1200. Lips of sealsmust be lubricated during assembly, in order toavoid damage during the first revolutions of theshaft.
R E - L U B R I C A T I O N
Bearing supports must be lubricated whilemoving, so that grease can cover the wholesurface of balls.Grease must be introduced slowly, often and insmall quantities.
L U B R I C A T I O N I N T E R V A L
Lubrication periods depend on use conditions ofbearing supports. Dust, humidity, load,temperature significantly affect the length oftime between re-lubrication.The table shows indicative values for re-lubrication periods.
LUBRICATIONAND MAINTENANCE
Useconditions
temperaturere-lubrification
period
Supporttype
Grease-nippletype
25 35 ÷ 45
30 45 ÷ 55
35 50 ÷ 60
40 55 ÷ 70
126 B E A R I N G L I N E
MOUNTING INSTRUCTIONS
Dimension "X" must be maintained to obtaintightness of supports.
Dimensions shaft/bore
Dimension "X" must be maintained usingsupports with seals.
d mm X mm
d mm X mm
d mm D mm X mm
12 20 ÷ 35
15 20 ÷ 35
16 22 ÷ 35
17 22 ÷ 35
20 30 ÷ 42
25 30 35 ÷ 45
30 35 45 ÷ 55
35 40 50 ÷ 60
40 45 55 ÷ 70
F L A N G E D B E A R I N G S U P P O R T S F O R S H O U L D E R E D S H A F T S
F L A N G E D B E A R I N G S U P P O R T S F O R P L A I N S H A F T S
MOUNTING INSTRUCTIONS
127B E A R I N G L I N E
The drawing shows some values that must becarefully maintained.
Diameter “d” near the bearing must have atolerance between -0,02 mm and -0,05 mm.
With heavy radial loads the coupling must beslightly forced.
Couplingshaft/support
Coupling shaft/seals
Both ends of the shaft must be made round inorder to simplify assembly of supports.
Tolerance of shaft depends on diameter andnumber of revolutions.
The drawing shows chamfers and radii necessaryto mount supports with seals correctly.
The shaft surface must be smooth and withoutdefects.
Seal lips and shaft must be well lubricatedbefore assembly.
The drawing shows chamfers and radii necessaryto mount supports with seals correctly.
The shaft surface must be smooth and withoutdefects.
Seal lips and shaft must be well lubricatedbefore assembly.
F L A N G E D B E A R I N G S U P P O R T S F O R S H O U L D E R E D S H A F T S
F L A N G E D B E A R I N G S U P P O R T S F O R S H O U L D E R E D S H A F T S
F L A N G E D B E A R I N G S U P P O R T S F O R P L A I N S H A F T S
F L A N G E D B E A R I N G S U P P O R T S F O R P L A I N S H A F T S
Low speeds Average speed High speedsh 9 h 8 h 7
LOCKING WITH GRUB SCREWS
In case of low speed and normal load wesuggest grub screws should be tightenedaccording to the values shown in the table.A more effective tightening can be achievedfixing the grub screws to a hole in the shaftduring assembly.
128 B E A R I N G L I N E
MOUNTING INSTRUCTIONS
A. Unscrew the grub screws inorder to free the bearing hole.
B. Insert the bearing on the shaft.
C. Tighten bolts on both sides.
D. Tighten screws according torecommended driving torque.
LOCKING WITH ECCENTRIC RING
Locking may be achieved rotating the ring.The ring has a blind hole that simplifies thelocking between bearing and shaft.The grub screw prevents the ring from releasingthe shaft.Recommended maximum driving torque isshown in the table.
A B
C D
A B
C D
A. Insert bearing and housing onthe shaft.
B. Tighten bolts on both sides.
C. Insert and block the eccentricring.
D. Tighten the ring screwsaccording to recommendeddriving torque.
12-15-16-17-20-25
30
45
40
ø
M6x0.75
M6x0.75
M6x0.75
M8x1.00
G (mm)
Grub screwsize
5.7
5.7
5.7
12.4
M (Nm)
Recomendeddriving torque
2500
2500
2500
3500
F (N)
Set screwmaximum axial load
12-15-16-17-20-25
30
45
40
ø
M6x0.75
M8x1.00
M10x1.25
M10x1.25
G (mm)
Grub screwsize
5.7
12.4
23.1
23.1
M (Nm)
Recomendeddriving torque
2500
3500
5000
5000
F (N)
Set screwmaximum axial load
129B E A R I N G L I N E
CALCULATION OF LOAD CAPACITY AND BEARING LIFE
LOAD COEFFICIENTS
Dynamic load coefficient C is used forcalculating life of bearings under dynamic loads.Static load coefficient Co is used for bearingsrunning at very low speeds or remaining stillunder load.Load coefficients are shown in the supportstables.
BEARING LIFE UNDER DYNAMIC LOADS
Life of bearing is the number of revolutions, orthe number of hours, bearings can run withoutshowing any sign of damage or deterioration inany of their components.
Basic life can be calculated with the followingformula:
CL10 = ( — )
3
P
where: L10 = life in millions of revolutions.C = dynamic load coefficient in N.P = equivalent dynamic load in N.
When bearings run at constant speed, their lifecan be determined in working hours:
1.000.000 CL10h = ———— ( — )
3
60 n P
where: L10h = life in hours.n = speed in rpm.
STATIC LOAD CAPACITY
Bearings dimensions are based on static loadcoefficient Co, and not on their life, in thefollowing cases:- when bearings are not running and are
subject to shocks.- when bearings are subject to slow oscillation
under load.
Equivalent static load can be calculated with thefollowing formula:
Po = Xo Fr + Yo Fa
where: Po = equivalent static load.Xo = radial static factor.Yo = axial static factor.Fr = radial load in N.Fa = axial load in N.
(See calculation of equivalent load)
CoThen calculate fs = —Po
where: fs = static load safety factor.Co = static load coefficient in N.Po = equivalent static load in N.
If fs value is less than value shown in the table,an insert with a higher Co must be chosen.
Choice of bearingdimensions
Fs working conditions
1 Normal working conditions
1,5 Insert subject to vibrations or shocks
2 ÷ 2,5 Noiseless applications.
1205 0.28 2.4 2.3 3.5
1206 0.24 2.8 2.6 4.1
1207 0.23 2.9 2.7 4.2
1208 0.22 3.0 2.9 4.4
130 B E A R I N G L I N E
CALCULATION OF LOAD CAPACITY AND BEARING LIFE
S U P P O R T S S E R I E S F - F C
DYNAMIC LOAD (RADIAL)
P = Fr
where: P = equivalent dynamic load in N.Fr = radial load in N.
COMBINED DYNAMIC LOAD (RADIAL + AXIAL)
FaP = Fr + Y1 Fa with = — ≤ eFr
where: P = equivalent dynamic load in N.Fr = radial load in N.Fa = axial load in N.Y = axial load factor.
FaP = 0,65Fr + Y2 Fa with = — >eFr
(See table below)
COMBINED STATIC LOAD (RADIAL + AXIAL)
Po = Fr + Yo Fa
where: Po = equivalent static load in N.Fr = radial load in N.Fa = axial load in N.Y = axial load factor.
(See table below)
S U P P O R T S S E R I E S U C - U F
DYNAMIC LOAD (RADIAL)
P = Fr
where: P = equivalent dynamic load in N.Fr = radial load in N.
COMBINED DYNAMIC LOAD (RADIAL + AXIAL)
P = XFr + YFa
where: P = equivalent dynamic load in N.Fr = radial load in N.Fa = axial load in N.X = radial load factor.Y = axial load factor.
(See table below)
COMBINED STATIC LOAD (RADIAL + AXIAL)
Po = 0,6Fr + 0,5Fa
where: Po = equivalent static load in N.Fr = radial load in N.Fa = axial load in N.
If Po < Fr” then consider Po = Fr
IMPORTANT: Fa ≤ 20% C - Calculate Fa/Co ratio- Compare result with value e- Use X and Y factors in relation to Fa/Co ratio
and to value.
Calculation ofequivalent load
Bearing type e Yo Y1 Y2
Fa/Co e
Calculation factors
YXYX
Fa/Fr > eFa/Fr ≤ e
0.025 0.22 1 0 0.56 2
0.04 0.24 1 0 0.56 18
0.07 0.27 1 0 0.56 16
0.13 0.31 1 0 0.56 14
0.25 0.37 1 0 0.56 12
0.5 0.44 1 0 0.56 1
131B E A R I N G L I N E
Bearing life can be determined in relation to therevolutions per minute (rpm) and the C/P ratio, asshown in the graph below:
HOW TO USE THE GRAPH
data: n = 200 rpm P = 4000 NC = 22400 N Co = 17900 N
22400calculate C/P = ———— = 5,6
4000
results: L10 = 180 millions of revolutionsL10h = 15.000 hours
CALCULATION EXAMPLE
Using calculation formulae previously shown it ispossible to solve this calculation example with thehelp of the graph:
n = 200 rpm P = 4000 NC = 22400 N Co = 17900 N
C 22400L10 = ( — )
3
= ( ——— )3
=P 4000
= 175,6 millions of revolutions
1.000.000 C 1.000.000 22400L10h = ———— ( — )
3
= ———— ( ——— ) =60 n P 60 · 200 4000
= 14.635 hours
Graph for life calculation
CALCULATION OF LOAD CAPACITY AND BEARING LIFE
Shaftd
mm
Speeds for shaft tolerances
rpm
h6 h7 h8 h9 h11
L I M I T I N G S P E E D S - S H A F T T O L E R A N C E
12 9500 6000 4300 1500 950
15 9500 6000 4300 1500 950
16 9500 6000 4300 1500 950
17 9500 6000 4300 1500 950
20 8500 5300 3800 1300 850
25 7000 4500 3200 1000 700
30 6300 4000 2800 900 630
35 5300 3400 2200 750 530
40 4800 3000 1900 670 480
➠
Bearing life
Limiting speeds
~~
SeriesF
d 25 13000 (6200) 12000 (5800) 3500 (3100)
30 12000 (5600) 11200 (5300) 3500 (3100)
35 11500 (5300) 10000 (5000) 3200 (3000)
40 mm 11500 (5000) 10000 (4700) 3200 (3000)
SeriesFC
d 30 13000 (6000) 12000 (5800) 3500 (3000)
35 mm 12800 (6000) 11000 (5300) 3200 (3000)
SeriesSFL / SFL-Z
d 12-15-16-17 7000 3200 6500 3000 3000 2000
20 mm 6200 2900 6000 2800 2800 1800
SeriesUCFQ / UCFQ-R
d 12 - 15 - 16 - 17 12000 (-) 12000 (-) 3500 (-)
20 12500 (-) 11500 (-) 3200 (-)
25 12500 (-) 11500 (-) 3200 (-)
30 12800 (-) 11000 (-) 3200 (-)
35 12300 (-) 10500 (-) 3000 (-)
40 mm 12000 (-) 10000 (-) 3000 (-)
SeriesSQL
d 12-15-16-17 6500 (-) 6000 (-) 2800 (-)
20 mm 5800 (-) 5300 (-) 2500 (-)
SeriesUCF / UCF-R
d 20 - 25 13000 (6200) 12000 (5800) 3500 (3100)
30 13000 (6000) 12000 (5800) 3500 (3100)
35 12800 (6000) 11000 (5300) 3200 (3000)
40 mm 12500 (5800) 10800 (5100) 3200 (3000)
132 B E A R I N G L I N E
PRODUCTION PROGRAM
MAX. RADIAL LOADCAPACITY OF HOUSINGS
✑ Values indicated in thetable above, areobtained at 23° C.
✑ Values indicated in: N.
✑ Values of polyamideversion (values ofpolypropylene versionsin brackets).
✑ For further informationplease consult cataloguepages regarding bearingtype you are interested in.
d 25
30 13000 (6000) 12000 (5800) 3200 (3000)
35 mm 12800 (6000) 11000 (5300) 3200 (3000)
d 12-15-16-17 mm 7000 (-) 7300 (-) 3200 (-)
25 mm (-) (-) (-)
d 20 6900 (3200) 7500 (3500) 3800 (3200)
25 6750 (2950) 7200 (3000) 3500 (3100)
30 12000 (5800) 13000 (6000) 3200 (3000)
35 11000 (5300) 12800 (6000) 3200 (3000)
40 mm 10800 (5100) 12850 (5800) 3000 (2800)
SeriesUFL / UFL-Z
d 12-15-16-17 6200 (3200) 6500 (3000) 3000 (2000)
20 mm 5800 (2900) 6000 (2800) 2800 (1800)
SeriesUCFT
PRODUCTION PROGRAM
133B E A R I N G L I N E
MAX. RADIAL LOADCAPACITY OF HOUSINGS
✑ Values indicated in thetable above, areobtained at 23° C.
✑ Values indicated in: N.
✑ Values of polyamideversion (values ofpolypropylene versionsin brackets).
✑ For further informationplease consult cataloguepages regarding bearingtype you are interested in.
SeriesUCFC / UCFC-Y
SeriesUCFL / UCFL-W
SeriesUCFH / UCFH-R
d 12 - 15 - 16 - 17 6500 (-) 7000 (-) 3200 (-)
20 7000 (-) 7500 (-) 3000 (-)
25 7500 (-) 8000 (-) 2800 (-)
30 8000 (-) 8800 (-) 2600 (-)
35 mm 8500 (-) 9000 (-) 2600 (-)
SeriesUCP / UCP-R
d 12 -15-16-17 6500 (2000) 2000 (1000) 3500 (1500) 1000 (600)
20 8500 (3200) 2600 (1600) 4200 (2000) 1200 (800)
25 10000 (3600) 3100 (1600) 5000 (2100) 1500 (1000)
30 12000 (5500) 3500 (1800) 6000 (2400) 1700 (1200)
35 12500 (6000) 3700 (2000) 6500 (2600) 1800 (1300)
40 mm 13000 (5800) 4000 (2200) 7000 (3200) 1900 (1400)
d 20 12000 (–) 10000 (–) 2800 (–)
25 12500 (–) 11000 (–) 3200 (–)
30 mm 12800 (–) 11500 (–) 3200 (–)
PRODUCTION PROGRAM
134 B E A R I N G L I N E
MAX. RADIAL LOADCAPACITY OF HOUSINGS
✑ Values indicated in thetable above, areobtained at 23° C.
✑ Values indicated in: N.
✑ Values of polyamideversion (values ofpolypropylene versionsin brackets).
✑ For further informationplease consult cataloguepages regarding bearingtype you are interested in.
SeriesUCPA / UCPA-R
d 20 6500 (3000) 2000 (1000) 4000 (1600) 1000 (700)
25 7800 (3200) 2500 (1400) 4800 (1800) 1300 (900)
30 mm 11000 (4000) 2900 (1500) 5700 (2000) 1500 (1000)
SeriesUCT / UCT-R
d 20 7800 (3200) 2500 (1400) 4800 (1800) 1000 (700)
25 6500 (3000) 2000 (1000) 4000 (1600) 1300 (900)
30 12000 (5500) 3500 (1800) 6000 (2400) 1500 (1000)
35 mm 10000 (3600) 2900 (1500) 5500 (2000) 1700 (1200)
SeriesUCHA / UCHA-R
d 20 10000 (3600) 2500 (1400) 4800 (1800) 1000 (700)
25 8500 (3200) 2000 (1000) 4000 (1600) 1300 (900)
30 14000 (6500) 3500 (1800) 6000 (2400) 1500 (1000)
35 mm 12000 (5500) 2900 (1500) 5500 (2000) 1700 (1200)
SeriesUCFA / UCFA-R
d 20 8000 (–) 2000 (–) 2500 (–) 1000 (–)
25 8500 (–) 3000 (–) 3000 (–) 1300 (–)
30 mm 9000 (–) 3500 (–) 3500 (–) 1500 (–)
SeriesUCHE / UCHE-R
d 20 10000 (3600) 2500 (1400) 4800 (1800) 1000 (700)
25 8500 (3200) 2000 (1000) 4000 (1600) 1300 (900)
30 14000 (6500) 3500 (1800) 6000 (2400) 1500 (1000)
35 mm 12000 (5500) 2900 (1500) 5500 (2000) 1700 (1200)
SeriesUCFG / UCFG-R