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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

Cone Part Number

 N/A HM88630

Bore (d)

 N/A 1 in25.400 mm

Inner Ring Width (B)

 N/A 1.0000 in25.400 mm
Dynamic Radial Load Rating - 1M Revs (C1) 1 N/A 17300 lbf76800 N
Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 4480 lbf19900 N
K Factor 3 N/A 1.07

Other Dimensions

Weight

 N/A 1.400 lb0.6 Kg
Effective Center Location4 N/A -0.18 in-4.6 mm
Max Shaft Fillet Radius5 N/A 0.030 in0.760 mm

Shaft Backing Shoulder Diameter - Frontface (da)

 N/A 1.56 in39.5 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 1.56 in39.5 mm

Cage Location rel. to BF (Aa)

 N/A 0.04 in1 mm

Cage Location rel. to FF (Ab)

 N/A 0.1 in2.5 mm

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)6 N/A 4180 lbf18600 N

Static Radial Load Rating (CO)

 N/A 21200 lbf94200 N

Factors

G1 Factor

 N/A 23.4

G2 Factor

 N/A 9.4
Geometry Factor (Cg)7 N/A 0.0822
  • 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.