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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - TS (Tapered Single) > Tapered Roller Bearings - TS (Tapered Single) Imperial > Part Number LM565949 - LM565910  
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Part Number LM565949 - LM565910, Tapered Roller Bearings - TS (Tapered Single) Imperial


This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft.



Unit of Measure: Imperial Metric Both

Specifications  · Dimensions  · Abutment and Fillet Dimensions  · Basic Load Ratings  · Factors

Specifications

Series
LM565900

Cone Part Number
LM565949

Cup Part Number
LM565910

Design Unit
Inch

Cage Material
Stamped Steel

Related Assembly Number(s)
LM565949-90021
LM565949-90025
LM565949-90027


Dimensions

d - Bore
15.0000 in
381.000 mm

D - Cup Outer Diameter
20.5625 in
522.288 mm

B - Cone Width
3.3125 in
84.138 mm

C - Cup Width
2.4375 in
61.913 mm

T - Bearing Width
3.3750 in
85.725 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.25 in
6.4 mm

r - Cup Backface "To Clear" Radius2
0.130 in
3.30 mm

da - Cone Frontface Backing Diameter
15.83 in
402 mm

db - Cone Backface Backing Diameter
16.18 in
411 mm

Da - Cup Frontface Backing Diameter
19.72 in
500.89 mm

Db - Cup Backface Backing Diameter
19.41 in
493.01 mm

Ab - Cage-Cone Frontface Clearance
0.19 in
4.8 mm

Aa - Cage-Cone Backface Clearance
0.44 in
11.2 mm

a - Effective Center Location3
0.35 in
8.9 mm
1 These maximum fillet radii will be cleared by the bearing corners.
2 These maximum fillet radii will be cleared by the bearing corners.
3 Negative value indicates effective center inside cone backface.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
81000 lbf
360000 N

C1 - Dynamic Radial Rating (1 million revolutions)2
313000 lbf
1390000 N

C0 - Static Radial Rating
663000 lbf
2950000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
53500 lbf
238000 N
1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
2 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
3 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.


Factors

K - Factor1
1.51

e - ISO Factor2
0.39

Y - ISO Factor3
1.56

G1 - Heat Generation Factor (Roller-Raceway)
3380

G2 - Heat Generation Factor (Rib-Roller End)
378

Cg - Geometry Factor4
0.203
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
2 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
4 Geometry constant for Lubrication Life Adjustment Factor a3l.



 DOWNLOADS 

Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances


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