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Part Number 42690H, Tapered Roller Bearings - Single Cones - Imperial

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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.




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

Specifications

Series
42600

Cone Part Number
42690H

Design Units
Imperial

Cage Type
Stamped Steel

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1
63100 lbf
280000 N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2
16300 lbf
72700 N
1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
2 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.


Dimensions

d - Cone Bore
3.0625 in
77.788 mm

B - Cone Width
1.2205 in
31.001 mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1
0.14 in
3.600 mm

da - Cone Frontface Backing Diameter
3.35 in
85 mm

db - Cone Backface Backing Diameter
3.58 in
91 mm

Ab - Cage-Cone Frontface Clearance
0.06 in
1.5 mm

Aa - Cage-Cone Backface Clearance
0.12 in
3 mm

a - Effective Center Location2
-0.11 in
-2.8 mm
1 These maximum fillet radii will be cleared by the bearing corners.
2 Negative value indicates effective center inside cone backface.


Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)1
9390 lbf
41800 N

C1 - Dynamic Radial Rating (1 million revolutions)2
36200 lbf
161000 N

C0 - Static Radial Rating
49800 lbf
222000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
6730 lbf
29900 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
1.39

Cg - Geometry Factor2
0.120
1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
2 Geometry constant for Lubrication Life Adjustment Factor a3l.



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Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances