All Product Types > ENGINEERED BEARINGS > Tapered Roller Bearings > Tapered Roller Bearings - Double Cups > Tapered Roller Bearings - Double Tapered Cup - Imperial > Part Number 15251D  

Part Number 15251D, Tapered Roller Bearings - Double Tapered Cup - Imperial

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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.




Specifications  · Dimensions  · Abutment and Fillet Dimensions  · Factors

Specifications

Series
15000

Cup Part Number
15251D

Design Units
Imperial


Dimensions

D - Cup Outer Diameter
2.5000 in
63.500 mm

C - Double Cup Width
1.4375 in
36.513 mm


Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1
0.030 in
0.8 mm

Da - Cup Frontface Backing Diameter
2.34 in
58.93 mm
1 These maximum fillet radii will be cleared by the bearing corners.


Factors

K - Factor1
1.67

e - ISO Factor2
0.35

Y1 - ISO Factor3
1.93

Y2 - ISO Factor4
2.87

G1 - Heat Generation Factor (Roller-Raceway)
14.6

G2 - Heat Generation Factor (Rib-Roller End)
7.58

Cg - Geometry Factor5
0.0606
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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