The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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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

Other Dimensions

Weight

 N/A 5.458 Kg12.03 lb

C - Double Cup Width

 N/A 2.0395 in51.803 mm
Max Housing Fillet Radius1 N/A 0.06 in1.5 mm

Housing Backing Shoulder Diameter - Frontface (Da)

 N/A 5.19 in131.83 mm

Key Dimensions

Series

 N/A 78000

Cup Part Number

 N/A 78549DC

O.D. (D)

 N/A 5.5 in139.7 mm
K Factor 2 N/A 0.67
e Factor 3 N/A 2.6

Factors

Y1 Factor 4 N/A 0.26 0.39
Y2 Factor 5 N/A 0.39
Geometry Factor (Cg)6 N/A 0.0884
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 6 Geometry constant for Lubrication Life Adjustment Factor a3l.