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Part Number LM11949 - LM11910 (LM11900LA), Tapered Roller Bearings - TSL (DUO-FACE® Plus Seal) Imperial

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Tapered Roller Bearings - TSL (DUO-FACE® Plus Seal) Imperial




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

Specifications

Series
LM11900

Cone Part Number
LM11949

Cup Part Number
LM11910

Seal Part Number
LM11900LA

Design Unit
Inch

Cage Material
Stamped Steel


Dimensions

d - Bore
3/4 in
19.05 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
16.281 mm

T1 - Total Width
0.685 in
17.4 mm


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
23.5 mm

db - Cone Backface Backing Diameter
0.98 in
25 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
-5.6 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

Y1 - ISO Factor4
2.25

Y2 - ISO Factor5
3.34

G1 - Heat Generation Factor (Roller-Raceway)
6.6

G2 - Heat Generation Factor (Rib-Roller End)
5.49

Cg - Geometry Factor6
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.
4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
6 Geometry constant for Lubrication Life Adjustment Factor a3l.


 MORE IMAGES 

·  timken-TSL-cutaway-angle-view

·  timken-TSL-left-angle-view

·  Timken TRB TSL



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Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances