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

Key Dimensions

Cup Part Number

 N/A HM258910

O.D. (D)

 N/A 19.7500 in501.650 mm

Outer Ring Width (C)

 N/A 2.4062 in61.117 mm
e Factor 1 N/A 0.7
K Factor 2 N/A 1.76

Other Dimensions

Weight

 N/A 122.800 Kg270.60 lb
Max Housing Fillet Radius3 N/A 0.250 in6.40 mm

Housing Backing Shoulder Dia. - Backface (Db)

 N/A 18.27 in464.10 mm
  • 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.