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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.
Unit of Measure

Specifications

Cone Part Number

 N/A X32205-B

Design Units

 N/A METRIC
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 N/A 81800 N18400 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 N/A 21200 N4770 lbf

Dimensions

d - Cone Bore

 N/A 25 mm0.9843 in

B - Cone Width

 N/A 18 mm0.7087 in

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius3 N/A 0.3 mm0.010 in

db - Cone Backface Backing Diameter

 N/A 31 mm1.22 in

Ab - Cage-Cone Frontface Clearance

 N/A 1.3 mm0.05 in

Aa - Cage-Cone Backface Clearance

 N/A 2 mm0.08 in
a - Effective Center Location4 N/A -3 mm-0.12 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)5 N/A 12200 N2740 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 12200 N2740 lbf

Factors

K - Factor7 N/A 1
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 2 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.
  • 3 These maximum fillet radii will be cleared by the bearing corners.
  • 4 Negative value indicates effective center inside cone backface.
  • 5 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
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