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

Cone Part Number

 N/A LM769349X

Bore (d)

 N/A 17.0000 in431.800 mm

Inner Ring Width (B)

 N/A 3.5313 in89.695 mm
Dynamic Radial Load Rating - 1M Revs (C1) 1 N/A 429000 lbf1910000 N
Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 111000 lbf495000 N
K Factor 3 N/A 1.33

Note

 N/A This part has a non-standard shoulder design. Please email customer CAD for shoulder details to ensure the proper design of mating components.

Other Dimensions

Weight

 N/A 276.55 lb125.442 Kg
Effective Center Location4 N/A 0.87 in22.1 mm
Max Shaft Fillet Radius5 N/A 0.310 in7.900 mm

Shaft Backing Shoulder Diameter - Frontface (da)

 N/A 17.83 in453 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 18.35 in466 mm

Cage Location rel. to BF (Aa)

 N/A 0.31 in7.9 mm

Cage Location rel. to FF (Ab)

 N/A 0.23 in5.8 mm

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)6 N/A 83500 lbf371000 N

Static Radial Load Rating (CO)

 N/A 929000 lbf4130000 N

Factors

G1 Factor

 N/A 5114.6

G2 Factor

 N/A 614.2
Geometry Factor (Cg)7 N/A 0.243
  • 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.