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

O.D. (D)

 N/A 180 mm7.0866 in

Cup Part Number

 N/A NP977759
e Factor 1 N/A 0.42
K Factor 2 N/A 1.39
Y Factor 3 N/A 1.43

Other Dimensions

Weight

 N/A 2 Kg4.4 lb

C - Cup Width

 N/A 39 mm1.5354 in
Max Housing Fillet Radius4 N/A 2.5 mm0.1 in

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 170 mm6.69 in

Housing Backing Shoulder Dia. - Backface (Db)

 N/A 163 mm6.42 in
  • 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 maximum fillet radii will be cleared by the bearing corners.