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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 JW7000

Cup Part Number

 N/A JW7010A

Design Units

 N/A METRIC

Full Timken Part Number

 N/A JW7000

Dimensions

D - Cup Outer Diameter

 N/A 140 mm5.5118 in

C - Cup Width

 N/A 27 mm1.063 in

Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1 N/A 1.02 mm0.04 in

Da - Cup Frontface Backing Diameter

 N/A 133.60 mm5.26 in

Db - Cup Backface Backing Diameter

 N/A 119.13 mm4.69 in

Factors

K - Factor2 N/A 0.67
e - ISO Factor3 N/A 0.87
Y - ISO Factor4 N/A 0.69

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 85.2

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 23.4
Cg - Geometry Factor5 N/A 0.0984
  • 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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