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

Bore (d)

 N/A 10.2500 in260.350 mm

Inner Ring Width (B)

 N/A 2.8750 in73.025 mm
Dynamic Radial Load Rating - 90M Revs (C90) 1 N/A 48200 lbf215000 N
e Factor 2 N/A 0.39
K Factor 3 N/A 1.48

Other Dimensions

Effective Center Location4 N/A 0.22 in5.588 mm
Max Shaft Fillet Radius5 N/A 0.25 in6.4 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 11.42 in290 mm

Cage Location rel. to BF (Aa)

 N/A -0.13 in-3.302 mm

Cage Location rel. to FF (Ab)

 N/A -0.35 in-8.89 mm

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)6 N/A 32600 lbf145000 N
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 4 Negative value indicates effective center inside cone backface.
  • 5 These maximum fillet radii will be cleared by the bearing corners.
  • 6 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.