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All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Double Cups > Tapered Roller Bearings - Double Tapered Cup - Imperial > Part Number 921851D  
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Part Number 921851D, Tapered Roller Bearings - Double Tapered Cup - Imperial



The configuration of the TDO provides a wide effective bearing spread, making it ideal for applications in which overturning moments are a significant load component. TDO bearings can be used in fixed positions or allowed to float in the housing bore.



Unit of Measure: Imperial Metric Both

Specifications  · Dimensions  · Abutment and Fillet Dimensions  · Factors

Specifications

Series

920000

Cup Part Number

921851D

Design Units

Imperial


Dimensions

D - Cup Outer Diameter

18.5000 in
469.900
mm

C - Double Cup Width

5 in
127
mm


Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1

0.06 in
1.5
mm

Da - Cup Frontface Backing Diameter

17.40 in
441.96
mm
1 These maximum fillet radii will be cleared by the bearing corners.


Factors

K - Factor1

2

e - ISO Factor2

0.29

Y1 - ISO Factor3

2.31

Y2 - ISO Factor4

3.44

Cg - Geometry Factor5

0.148
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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
5 Geometry constant for Lubrication Life Adjustment Factor a3l.



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