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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 L910349 - L910310  
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Part Number L910349 - L910310, 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
L910300

Cone Part Number
L910349

Cup Part Number
L910310

Design Unit
Inch

Cage Material
Stamped Steel

Related Assembly Number(s)
L910349-90402


Dimensions

d - Bore
2.4995 in
63.487 mm

D - Cup Outer Diameter
3.7392 in
94.976 mm

B - Cone Width
0.6102 in
15.499 mm

C - Cup Width
0.4724 in
11.999 mm

T - Bearing Width
0.6693 in
17.000 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.04 in
1.020 mm

r - Cup Backface "To Clear" Radius2
0.04 in
1.02 mm

da - Cone Frontface Backing Diameter
2.72 in
69 mm

db - Cone Backface Backing Diameter
2.76 in
70 mm

Da - Cup Frontface Backing Diameter
3.66 in
92.96 mm

Db - Cup Backface Backing Diameter
3.35 in
85.09 mm

Ab - Cage-Cone Frontface Clearance
0.08 in
2 mm

Aa - Cage-Cone Backface Clearance
0.05 in
1.3 mm

a - Effective Center Location3
0.45 in
11.4 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
2550 lbf
11400 N

C1 - Dynamic Radial Rating (1 million revolutions)2
9850 lbf
43800 N

C0 - Static Radial Rating
14000 lbf
62300 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
3410 lbf
15200 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
0.75

e - ISO Factor2
0.78

Y - ISO Factor3
0.77

G1 - Heat Generation Factor (Roller-Raceway)
33.5

G2 - Heat Generation Factor (Rib-Roller End)
38.2

Cg - Geometry Factor4
0.101
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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