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 EE350750

Bore (d)

 N/A 7.5 in190.5 mm

Inner Ring Width (B)

 N/A 3.7500 in95.250 mm
Dynamic Radial Load Rating - 1M Revs (C1) 1 N/A 370000 lbf1640000 N
Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 95900 lbf426000 N
K Factor 3 N/A 0.77

Other Dimensions

Weight

 N/A 138.20 lb62.700 Kg
Effective Center Location4 N/A 0.51 in13 mm
Max Shaft Fillet Radius5 N/A 0.25 in6.35 mm

Shaft Backing Shoulder Diameter - Frontface (da)

 N/A 9.33 in237 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 9.45 in240 mm

Cage Location rel. to BF (Aa)

 N/A 0.84 in21.3 mm

Cage Location rel. to FF (Ab)

 N/A 0.64 in16.3 mm

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)6 N/A 124000 lbf554000 N

Static Radial Load Rating (CO)

 N/A 382000 lbf1700000 N

Factors

G1 Factor

 N/A 827.7

G2 Factor

 N/A 77.3
Geometry Factor (Cg)7 N/A 0.157
  • 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.