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.

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Unit of Measure

Key Dimensions

Cup Part Number

 N/A 129174

O.D. (D)

 N/A 17.3208 in439.948 mm

Outer Ring Width (C)

 N/A 2.1250 in53.975 mm
e Factor 1 N/A 0.42
K Factor 2 N/A 1.4
Y Factor 3 N/A 1.44

Other Dimensions

Weight

 N/A 33.600 Kg74.10 lb
Max Housing Fillet Radius4 N/A 0.190 in4.83 mm

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 16.30 in411.50 mm

Housing Backing Shoulder Dia. - Backface (Db)

 N/A 16.02 in406.91 mm

Factors

G1 Factor

 N/A 1882.6

G2 Factor

 N/A 272.9
Geometry Factor (Cg)5 N/A 0.171
  • 1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 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 maximum fillet radii will be cleared by the bearing corners.
  • 5 Geometry constant for Lubrication Life Adjustment Factor a3l.