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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

Key Dimensions

Cone Part Number

 N/A JM241538

Bore (d)

 N/A 189.949 mm7.4783 in
Dynamic Radial Load Rating - 90M Revs (C90) 1 N/A 299000 N67100 lbf
K Factor 2 N/A 1.76

Other Dimensions

Inner Ring Width (B)

 N/A 60.000 mm2.3622 in
Effective Center Location3 N/A -8.9 mm-0.35 in
Max Shaft Fillet Radius4 N/A 3 mm0.120 in

Shaft Backing Shoulder Dia. - Backface (db)

 N/A 211 mm8.31 in

Cage Location rel. to BF (Aa)

 N/A -2.3 mm-0.09 in

Cage Location rel. to FF (Ab)

 N/A 7.4 mm0.29 in

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)5 N/A 82600 N18600 lbf
  • 1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 2 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 3 Negative value indicates effective center inside cone backface.
  • 4 These maximum fillet radii will be cleared by the bearing corners.
  • 5 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.