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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.
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Unit of Measure

Other Dimensions

Weight

 N/A 15.400 Kg33.90 lb

C - Cup Width

 N/A 51 mm2.0079 in
Max Housing Fillet Radius1 N/A 2.54 mm0.1 in

Housing Backing Shoulder Diameter - Frontface (Da)

 N/A 290.07 mm11.42 in

Housing Backing Shoulder Diameter - Backface (Db)

 N/A 273.05 mm10.75 in

Key Dimensions

Series

 N/A HM840400

Cup Part Number

 N/A JHM840410

O.D. (D)

 N/A 300 mm11.811 in
K Factor 2 N/A 1.12
e Factor 3 N/A 0.52
Y Factor 4 N/A 1.15

Factors

G1 Factor

 N/A 853.6

G2 Factor

 N/A 126.4
Geometry Factor (Cg)5 N/A 0.143
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 5 Geometry constant for Lubrication Life Adjustment Factor a3l.