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 299711X

O.D. (D)

 N/A 71.1250 in1806.575 mm

Outer Ring Width (C)

 N/A 3.3750 in85.725 mm
e Factor 1 N/A 0.47

Other Dimensions

Weight

 N/A 486.900 Kg1073.50 lb
Max Housing Fillet Radius2 N/A 0.130 in3.30 mm

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 71.46 in1815.08 mm

Housing Backing Shoulder Dia. - Backface (Db)

 N/A 68.90 in1750.06 mm

Factors

Geometry Factor (Cg)3 N/A 0.575
  • 1 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 2 These maximum fillet radii will be cleared by the bearing corners.
  • 3 Geometry constant for Lubrication Life Adjustment Factor a3l.