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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

Series

 N/A 08000

Cup Part Number

 N/A 08231

Design Units

 N/A Imperial

Dimensions

D - Cup Outer Diameter

 N/A 2.3125 in58.738 mm

C - Cup Width

 N/A 0.4219 in10.716 mm

Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1 N/A 0.04 in1.02 mm

Da - Cup Frontface Backing Diameter

 N/A 2.20 in55.88 mm

Db - Cup Backface Backing Diameter

 N/A 2.05 in52.07 mm

Factors

K - Factor2 N/A 1.23
e - ISO Factor3 N/A 0.47
Y - ISO Factor4 N/A 1.27

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 10.7

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 10.6
Cg - Geometry Factor5 N/A 0.0601
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 5 Geometry constant for Lubrication Life Adjustment Factor a3l.
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