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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

0.30 lb
0.100 Kg

Cage Type

Stamped Steel


Dimensions

d - Cone Bore

0.7500 in
19.050 mm

D - Cup Outer Diameter

1.7810 in
45.237 mm

B - Cone Width

0.6550 in
16.637 mm

C - Cup Width

0.4750 in
12.065 mm

T - Bearing Width

0.6100 in
15.494 mm

Z - Number of Rollers Per Row

14


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1

0.050 in
1.270 mm

r - Cup Backface "To Clear" Radius2

0.050 in
1.27 mm

da - Cone Frontface Backing Diameter

0.93 in
23.62 mm

db - Cone Backface Backing Diameter

0.98 in
24.89 mm

Da - Cup Frontface Backing Diameter

1.65 in
41.90 mm

Db - Cup Backface Backing Diameter

1.56 in
39.62 mm

Ab - Cage-Cone Frontface Clearance

0.05 in
1.3 mm

Aa - Cage-Cone Backface Clearance

-0.01 in
-0.3 mm

a - Effective Center Location3

-0.22 in
-5.60 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

2280 lbf
10100 N

C1 - Dynamic Radial Rating (1 million revolutions)2

8800 lbf
39100 N

C0 - Static Radial Rating

7200 lbf
32000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3

1170 lbf
5220 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

1.94

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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