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This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft.
Unit of Measure

Specifications

Series

 N/A M325900

Cup Part Number

 N/A M325911

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 6.8125 in173.038 mm

C - Cup Width

 N/A 1.5625 in39.688 mm

Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1 N/A 0.130 in3.30 mm

Da - Cup Frontface Backing Diameter

 N/A 6.65 in167.90 mm

Db - Cup Backface Backing Diameter

 N/A 6.18 in156.97 mm

Factors

e - ISO Factor2 N/A 0.35
Cg - Geometry Factor3 N/A 0.144
  • 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 Geometry constant for Lubrication Life Adjustment Factor a3l.