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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 EE514050

Bore (d)

 N/A 5 in127 mm
Dynamic Radial Load Rating - 90M Revs (C90) 1 N/A 46700 lbf208000 N
Dynamic Radial Load Rating - 1M Revs (C1) 2 N/A 180000 lbf802000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)3 N/A 314000 lbf1400000 N
Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row) 4 N/A 81300 lbf362000 N
K Factor 5 N/A 0.9

Other Dimensions

Inner Ring Width (B)

 N/A 3.25 in82.55 mm
Max Shaft Fillet Radius6 N/A 0.25 in6.35 mm

Shaft Backing Shoulder Diameter - Frontface (da)

 N/A 6.05 in153.7 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 6.69 in170 mm

Cage Location Relative to Frontface (Ab) 

 N/A 0.07 in1.8 mm

Cage Location Relative to Backface (Aa)

 N/A 0.73 in18.5 mm
Effective Center Location7 N/A -0.23 in-5.8 mm

Weight

 N/A 47.7 lb21.600 Kg

Ratings

Static Radial Load Rating (C0)

 N/A 227000 lbf1010000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)8 N/A 52200 lbf232000 N

Factors

G1 Factor

 N/A 392.9

G2 Factor

 N/A 44.4
Geometry Factor (Cg)9 N/A 0.15
  • 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 These maximum fillet radii will be cleared by the bearing corners.
  • 7 Negative value indicates effective center inside cone backface.
  • 8 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.
  • 9 Geometry constant for Lubrication Life Adjustment Factor a3l.