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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

298000

Cup Part Number

298216

Design Units

Imperial

Dimensions

D - Cup Outer Diameter

21.5000 in546.1 mm

C - Cup Width

3.625 in92.075 mm

Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1 0.250 in6.35 mm

Da - Cup Frontface Backing Diameter

19.84 in503.90 mm

Db - Cup Backface Backing Diameter

19.49 in495.05 mm

Factors

e - ISO Factor2 0.35
Cg - Geometry Factor3 0.189
  • 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 Geometry constant for Lubrication Life Adjustment Factor a3l.