Montage of Timken Bearing Products
Batch CAD Cart (0) ▾
  • Cart is empty
  1. Click Here for Batch Download
Request Information Add to CAD Cart
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

Specifications

Design Units

 N/A Imperial
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 N/A 16900 lbf75300 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 N/A 4390 lbf19500 N

Dimensions

d - Cone Bore

 N/A 0.9835 in24.981 mm

B - Cone Width

 N/A 0.78125 in19.844 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius3 N/A 0.06 in1.5 mm

db - Cone Backface Backing Diameter

 N/A 1.30 in33.0 mm

Ab - Cage-Cone Frontface Clearance

 N/A -0.0390625 in-0.9922 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.078125 in1.9844 mm
a - Effective Center Location4 N/A -0.14 in-3.6 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)5 N/A 2520 lbf11200 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 1650 lbf7340 N

Factors

K - Factor7 N/A 1.53
  • 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 for a single-row, C90(2) is the two-row radial value.
  • 3 These maximum fillet radii will be cleared by the bearing corners.
  • 4 Negative value indicates effective center inside cone backface.
  • 5 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.