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 320 mm12.5984 in

Cup Part Number

 N/A JF24010
e Factor 1 N/A 0.34
K Factor 2 N/A 1.7
Y Factor 3 N/A 1.74

Other Dimensions

Weight

 N/A 12.5 Kg27.60 lb

C - Cup Width

 N/A 46 mm1.811 in
Max Housing Fillet Radius4 N/A 4.06 mm0.16 in

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 311.40 mm12.26 in

Housing Backing Shoulder Dia. - Backface (Db)

 N/A 300.99 mm11.85 in

Factors

G1 Factor

 N/A 1143.5

G2 Factor

 N/A 240.4
Geometry Factor (Cg)5 N/A 0.137
  • 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.
  • 5 Geometry constant for Lubrication Life Adjustment Factor a3l.