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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.
Unit of Measure

Specifications

Series

 N/A HM127400

Cup Part Number

 N/A HM127419XD

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 8.6564 in219.873 mm

C - Double Cup Width

 N/A 5.315 in135.001 mm

Abutment and Fillet Dimensions

Da - Cup Frontface Backing Diameter

 N/A 7.80 in198.10 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 423

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 85.4
Cg - Geometry Factor5 N/A 0.116
  • 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.