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 L44643

Cup Part Number

 N/A L44610

Seal Part Number

 N/A L44600LA

Bore (d)

 N/A 1.0000 in25.400 mm

O.D. (D)

 N/A 1.9800 in50.292 mm

Width (T)

 N/A 0.56 in14.224 mm
Dynamic Radial Load Rating - 90M Revs (C90) 1 N/A 2080 lbf9230 N
Dynamic Radial Load Rating - 1M Revs (C1) 2 N/A 8010 lbf35600 N
e Factor 3 N/A 0.37
Y Factor 4 N/A 1.6
K Factor 5 N/A 1.56

Other Dimensions

Weight

 N/A 0.28 lb0.13 Kg

Inner Ring Width (B)

 N/A 0.5800 in14.732 mm

Outer Ring Width (C)

 N/A 0.4200 in10.668 mm

Total Width (T1)

 N/A 0.635 in16.13 mm
Effective Center Location6 N/A -0.13 in-3.3 mm
Max Shaft Fillet Radius7 N/A 0.050 in1.270 mm
Max Housing Fillet Radius8 N/A 0.050 in1.27 mm

Shaft Backing Shoulder Dia. - Frontface (da)

 N/A 1.18 in30 mm

Shaft Backing Shoulder Dia. - Backface (db)

 N/A 1.26 in32 mm

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 1.87 in47.50 mm

Housing Backing Shoulder Dia. - Backface (Db)

 N/A 1.75 in44.45 mm

Cage Location rel. to BF (Aa)

 N/A 0.05 in1.3 mm

Cage Location rel. to FF (Ab)

 N/A 0.02 in0.5 mm

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)9 N/A 1330 lbf5910 N

Static Radial Load Rating (C0)

 N/A 7400 lbf32900 N

Factors

Y1 Factor 10 N/A 1.8
Y2 Factor 11 N/A 2.69

G1 Factor

 N/A 8.9

G2 Factor

 N/A 8.93
Geometry Factor (Cg)12 N/A 0.0526
  • 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 factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 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 These maximum fillet radii will be cleared by the bearing corners.
  • 8 These maximum fillet radii will be cleared by the bearing corners.
  • 9 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.
  • 10 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 11 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 12 Geometry constant for Lubrication Life Adjustment Factor a3l.