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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 39585P - 39521P  
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Part Number 39585P - 39521P, 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

Cone Part Number
39585P

Cup Part Number
39521P

Design Unit
Inch

Cage Material
Stamped Steel


Dimensions

d - Bore
2 1/2 in
63.500 mm

D - Cup Outer Diameter
4.4375 in
112.712 mm

B - Cone Width
1.1875 in
30.163 mm

C - Cup Width
0.8268 in
21.001 mm

T - Bearing Width
1.1875 in
30.165 mm


Abutment and Fillet Dimensions

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

r - Cup Backface "To Clear" Radius2
0.06 in
1.5 mm

da - Cone Frontface Backing Diameter
2.87 in
73 mm

db - Cone Backface Backing Diameter
3.11 in
79 mm

Da - Cup Frontface Backing Diameter
4.21 in
107 mm

Ab - Cage-Cone Frontface Clearance
0.13 in
3.3 mm

Aa - Cage-Cone Backface Clearance
0.05 in
1.3 mm

a - Effective Center Location3
-0.26 in
-6.6 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
11500 lbf
51300 N

C1 - Dynamic Radial Rating (1 million revolutions)2
44500 lbf
198000 N

C0 - Static Radial Rating
50300 lbf
224000 N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3
6700 lbf
29800 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
1.72

e - ISO Factor2
0.34

G1 - Heat Generation Factor (Roller-Raceway)
84.3

G2 - Heat Generation Factor (Rib-Roller End)
23.7

Cg - Geometry Factor3
0.107
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 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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