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

Key Dimensions

Cup Part Number

 N/A 243250W

O.D. (D)

 N/A 24.9950 in634.873 mm

Outer Ring Width (C)

 N/A 2.5000 in63.500 mm
e Factor 1 N/A 0.34

Other Dimensions

Weight

 N/A 58.500 Kg129.00 lb
Max Housing Fillet Radius2 N/A 0.130 in3.30 mm

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 24.09 in611.89 mm

Housing Backing Shoulder Dia. - Backface (Db)

 N/A 23.74 in603.00 mm

Factors

Geometry Factor (Cg)3 N/A 0.235
  • 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.