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.

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Unit of Measure

Key Dimensions

Cup Part Number

 N/A 78551DF

O.D. (D)

 N/A 5.5100 in139.954 mm
e Factor 1 N/A 0.87
K Factor 2 N/A 0.67

Other Dimensions

Weight

 N/A 280.386 Kg618.15 lb

Outer Ring Width (C)

 N/A 2.0395 in51.803 mm
Max Housing Fillet Radius3 N/A 0.06 in1.5 mm

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 5.19 in131.83 mm

Factors

Y1 Factor 4 N/A 0.78
Y2 Factor 5 N/A 1.16
Geometry Factor (Cg)6 N/A 0.0884
  • 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 maximum fillet radii will be cleared by the bearing corners.
  • 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.