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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Single Cones > Tapered Roller Bearings - Single Cones - Imperial > Part Number 15579A  
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Part Number 15579A, Tapered Roller Bearings - Single Cones - 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

15500

Cone Part Number

15579A

Design Units

Imperial

Cage Type

Stamped Steel

C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1

18000 lbf
80100
N

C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2

4670 lbf
20800
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

1.0300 in
26.162
mm

B - Cone Width

0.7344 in
18.654
mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1

0.03 in
0.800
mm

da - Cone Frontface Backing Diameter

1.22 in
31
mm

db - Cone Backface Backing Diameter

1.26 in
32
mm

Ab - Cage-Cone Frontface Clearance

0.1 in
2.5
mm

Aa - Cage-Cone Backface Clearance

0.04 in
1
mm

a - Effective Center Location2

-0.25 in
-6.4
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

2680 lbf
11900
N

C1 - Dynamic Radial Rating (1 million revolutions)2

10300 lbf
46000
N

C0 - Static Radial Rating

11300 lbf
50100
N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3

1590 lbf
7070
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

1.69

Cg - Geometry Factor2

0.0577
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.



 DOWNLOADS 

Tapered Roller Bearing Engineering Information
(PDF, 663KB)

Bearing Life Calculation Tool

Bearing Dimensional Tolerances


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