COMPANY HEADER
CAD (0) ▾
  • Cart is empty
  1. Request CAD files
Terms
Request Information Add to CAD Cart
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 30207

Cup Part Number

 N/A Y30207

Design Units

 N/A METRIC

Full Timken Part Number

 N/A 30207

Dimensions

D - Cup Outer Diameter

 N/A 72 mm2.8346 in

C - Cup Width

 N/A 15 mm0.5906 in

Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1 N/A 1.52 mm0.06 in

Da - Cup Frontface Backing Diameter

 N/A 67.10 mm2.68 in

Db - Cup Backface Backing Diameter

 N/A 64.01 mm2.52 in

Factors

K - Factor2 N/A 1.56
e - ISO Factor3 N/A 0.37
Y - ISO Factor4 N/A 1.6

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 18

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 13.3
Cg - Geometry Factor5 N/A 0.0662
  • 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.