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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 5.1 Kg11.20 lb

Inner Ring Width (B)

 N/A 55 mm2.1654 in
Max Shaft Fillet Radius1 N/A 3.050 mm0.12 in

Shaft Backing Shoulder Diameter - Frontface (da)

 N/A 93 mm3.66 in

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 97 mm3.82 in

Cage Location Relative to Frontface (Ab) 

 N/A 1.5 mm0.06 in

Cage Location Relative to Backface (Aa)

 N/A 6.6 mm0.26 in
Effective Center Location2 N/A -17.3 mm-0.68 in

Key Dimensions

Series

 N/A 32315M

Cone Part Number

 N/A X32315M

Bore (d)

 N/A 75 mm2.9528 in
Dynamic Radial Load Rating - 90M Revs (C90) 3 N/A 92600 N20800 lbf
Dynamic Radial Load Rating - 1M Revs (C1) 4 N/A 357000 N80300 lbf
K Factor 5 N/A 1.69

Ratings

Static Radial Load Rating (C0)

 N/A 421000 N94600 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 54700 N12300 lbf

Factors

G1 Factor

 N/A 145.2

G2 Factor

 N/A 26.7
Geometry Factor (Cg)7 N/A 0.0831
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 2 Negative value indicates effective center inside cone backface.
  • 3 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 4 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 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.
  • 7 Geometry constant for Lubrication Life Adjustment Factor a3l.