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Timken Part Number 17580 - 17520, 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

17500

Cone Part Number

17580

Cup Part Number

17520

Design Units

Imperial

Bearing Weight

0.30 lb
0.100 Kg

Cage Type

Stamped Steel


Dimensions

d - Cone Bore

0.6250 in
15.875 mm

D - Cup Outer Diameter

1.6875 in
42.863 mm

B - Cone Width

0.6563 in
16.670 mm

C - Cup Width

0.5313 in
13.495 mm

T - Bearing Width

0.6563 in
16.670 mm

Z - Number of Rollers Per Row

12


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1

0.060 in
1.520 mm

r - Cup Backface "To Clear" Radius2

0.060 in
1.52 mm

da - Cone Frontface Backing Diameter

0.83 in
21.08 mm

db - Cone Backface Backing Diameter

0.91 in
23.11 mm

Da - Cup Frontface Backing Diameter

1.56 in
39.62 mm

Db - Cup Backface Backing Diameter

1.44 in
36.58 mm

Ab - Cage-Cone Frontface Clearance

0.11 in
2.8 mm

Aa - Cage-Cone Backface Clearance

-0.01 in
-0.3 mm

a - Effective Center Location3

-0.23 in
-5.80 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

1830 lbf
8150 N

C1 - Dynamic Radial Rating (1 million revolutions)2

7070 lbf
31400 N

C0 - Static Radial Rating

6560 lbf
29200 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3

1040 lbf
4620 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

1.76

e - ISO Factor2

0.33

Y - ISO Factor3

1.81

G1 - Heat Generation Factor (Roller-Raceway)

5.3

G2 - Heat Generation Factor (Rib-Roller End)

4.53

Cg - Geometry Factor

0.0423
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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