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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.

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Unit of Measure

Key Dimensions

UPC

 N/A 0053893609423

Cone Part Number

 N/A H414236

Bore (d)

 N/A 2 1/2 in63.500 mm

Inner Ring Width (B)

 N/A 1.6250 in41.275 mm
Dynamic Radial Load Rating - 1M Revs (C1) 1 N/A 61200 lbf272000 N
Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 15900 lbf70600 N
K Factor 3 N/A 1.62

Other Dimensions

Weight

 N/A 6.4 lb2.90 Kg
Effective Center Location4 N/A -0.43 in-10.9 mm
Max Shaft Fillet Radius5 N/A 0.280 in7.100 mm

Shaft Backing Shoulder Diameter - Frontface (da)

 N/A 3.07 in78 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 3.5 in89 mm

Cage Location rel. to BF (Aa)

 N/A 0.13 in3.3 mm

Cage Location rel. to FF (Ab)

 N/A 0.14 in3.6 mm

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)6 N/A 9790 lbf43500 N

Static Radial Load Rating (CO)

 N/A 75400 lbf335000 N

Factors

Geometry Factor (Cg)7 N/A 0.0827
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 2 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 4 Negative value indicates effective center inside cone backface.
  • 5 These maximum fillet radii will be cleared by the bearing corners.
  • 6 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
  • 7 Geometry constant for Lubrication Life Adjustment Factor a3l.