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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.
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Unit of Measure

Specifications

Series

 N/A HM129800

Cup Part Number

 N/A HM129815YD

Design Units

 N/A Imperial

Note

 N/A This part has a non-standard shoulder design. Please email customer CAD for shoulder details to ensure the proper design of mating components.

Dimensions

D - Cup Outer Diameter

 N/A 8.6875 in220.663 mm

C - Double Cup Width

 N/A 6.4374 in163.510 mm

Abutment and Fillet Dimensions

Da - Cup Frontface Backing Diameter

 N/A 8.31 in211.10 mm

Factors

K - Factor1 N/A 2.21
e - ISO Factor2 N/A 0.55
Y1 - ISO Factor3 N/A 1.24 1.84
Y2 - ISO Factor4 N/A 1.84

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 494
Cg - Geometry Factor5 N/A 0.122
  • 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.