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

Cone Part Number

 N/A X31322M

Bore (d)

 N/A 110 mm4.3307 in
Dynamic Radial Load Rating - 90M Revs (C90) 1 N/A 143000 N32200 lbf
K Factor 2 N/A 0.71

Other Dimensions

Inner Ring Width (B)

 N/A 57 mm2.2441 in
Effective Center Location3 N/A 11.7 mm0.46 in
Max Shaft Fillet Radius4 N/A 1.8 mm0.07 in

Shaft Backing Shoulder Dia. - Backface (db)

 N/A 135 mm5.35 in

Cage Location rel. to BF (Aa)

 N/A 9.1 mm0.36 in

Cage Location rel. to FF (Ab)

 N/A 13.2 mm0.52 in

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)5 N/A 203000 N45500 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.