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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 48600

Cone Part Number

 N/A NA48685SW

Bore (d)

 N/A 5.625 in142.875 mm
Dynamic Radial Load Rating - 90M Revs (C90) 1 N/A 16700 lbf74300 N
Dynamic Radial Load Rating - 1M Revs (C1) 2 N/A 64400 lbf286000 N
K Factor 3 N/A 1.74

Other Dimensions

Inner Ring Width (B)

 N/A 1.8438 in46.833 mm
Max Shaft Fillet Radius4 N/A 0.14 in3.556 mm

Shaft Backing Shoulder Diameter - Frontface (da)

 N/A 0 in0 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 6.22 in158 mm

Cage Location Relative to Frontface (Ab) 

 N/A -0.04 in-1 mm

Cage Location Relative to Backface (Aa)

 N/A 0.22 in5.6 mm
Effective Center Location5 N/A -0.24 in-6.1 mm

Weight

 N/A 9.1 lb

Ratings

Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 9610 lbf42800 N

Factors

G1 Factor

 N/A 439.6

G2 Factor

 N/A 130.5
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 4 These maximum fillet radii will be cleared by the bearing corners.
  • 5 Negative value indicates effective center inside cone backface.
  • 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.