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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 HM81649 - HM81610  
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Part Number HM81649 - HM81610, 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

HM81600

Cone Part Number

HM81649

Cup Part Number

HM81610

Design Unit

Inch

Cage Material

Stamped Steel


Dimensions

d - Bore

0.6294 in
15.987
mm

D - Cup Outer Diameter

1.8494 in
46.975
mm

B - Cone Width

0.8268 in
21.001
mm

C - Cup Width

0.6299 in
15.999
mm

T - Bearing Width

0.8268 in
21.001
mm


Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1

0.04 in
1.020
mm

r - Cup Backface "To Clear" Radius2

0.08 in
2.03
mm

da - Cone Frontface Backing Diameter

0.9 in
23
mm

db - Cone Backface Backing Diameter

1.08 in
27.5
mm

Da - Cup Frontface Backing Diameter

1.71 in
43.43
mm

Db - Cup Backface Backing Diameter

1.48 in
37.59
mm

Ab - Cage-Cone Frontface Clearance

0.08 in
2
mm

Aa - Cage-Cone Backface Clearance

0.03 in
0.8
mm

a - Effective Center Location3

-0.24 in
-6.1
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

2340 lbf
10400
N

C1 - Dynamic Radial Rating (1 million revolutions)2

9020 lbf
40100
N

C0 - Static Radial Rating

8840 lbf
39300
N

Ca90 - Dynamic Thrust Rating (90 million revolutions)3

2190 lbf
9720
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

1.07

e - ISO Factor2

0.55

Y - ISO Factor3

1.1

G1 - Heat Generation Factor (Roller-Raceway)

6.1

G2 - Heat Generation Factor (Rib-Roller End)

4.57

Cg - Geometry Factor4

0.0526
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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