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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

Series

 N/A LM67000

Cone Part Number

 N/A LM67043

Bore (d)

 N/A 1.125 in28.575 mm
Dynamic Radial Load Rating - 90M Revs (C90) 1 N/A 2130 lbf9460 N
Dynamic Radial Load Rating - 1M Revs (C1) 2 N/A 8210 lbf36500 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)3 N/A 14300 lbf63500 N
Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row) 4 N/A 3700 lbf16500 N
K Factor 5 N/A 1.42

Other Dimensions

Inner Ring Width (B)

 N/A 0.66 in16.764 mm

Shaft Backing Shoulder Diameter - Frontface (da)

 N/A 1.38 in35 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 1.63 in41.5 mm

Cage Location Relative to Frontface (Ab) 

 N/A 0.05 in1.3 mm

Cage Location Relative to Backface (Aa)

 N/A 0.02 in0.5 mm
Effective Center Location6 N/A -0.12 in-3 mm

Weight

 N/A 0.6 lb0.30 Kg

Ratings

Static Radial Load Rating (C0)

 N/A 10000 lbf44600 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 1500 lbf6680 N

Factors

Geometry Factor (Cg)8 N/A 0.0612
  • 1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 2 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 3 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 4 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.
  • 5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 6 Negative value indicates effective center inside cone backface.
  • 7 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.
  • 8 Geometry constant for Lubrication Life Adjustment Factor a3l.