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Timken Part Number LM11949 - LM11910, 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

LM11900

Cone Part Number

LM11949

Cup Part Number

LM11910

Design Units

Imperial

Bearing Weight

0.100 Kg
0.30
lb

Cage Type

Stamped Steel


Dimensions

d - Bore

19.050 mm
0.7500
in

D - Cup Outer Diameter

45.237 mm
1.7810
in

B - Cone Width

16.637 mm
0.6550
in

C - Cup Width

12.065 mm
0.4750
in

T - Bearing Width

15.494 mm
0.6100
in


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1

1.270 mm
0.050
in

r - Cup Backface "To Clear" Radius2

1.27 mm
0.050
in

da - Cone Frontface Backing Diameter

23.62 mm
0.93
in

db - Cone Backface Backing Diameter

24.89 mm
0.98
in

Da - Cup Frontface Backing Diameter

41.90 mm
1.65
in

Db - Cup Backface Backing Diameter

39.62 mm
1.56
in

Ab - Cage-Cone Frontface Clearance

1.3 mm
0.05
in

Aa - Cage-Cone Backface Clearance

-0.3 mm
-0.01
in

a - Effective Center Location3

-5.6 mm
-0.22
in
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

10100 N
2280
lbf

C1 - Dynamic Radial Rating (1 million revolutions)2

39100 N
8800
lbf

C0 - Static Radial Rating

32000 N
7200
lbf

Ca90 - Dynamic Thrust Rating (90 million revolutions)3

5220 N
1170
lbf
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

1.94

e - ISO Factor2

0.3

Y - ISO Factor3

2

G1 - Heat Generation Factor (Roller-Raceway)

6.6

G2 - Heat Generation Factor (Rib-Roller End)

5.49

Cg - Geometry Factor

0.0441
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.



 DOWNLOADS 

Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances

Tools and Guides for Engineers


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