COMPANY HEADER
CAD (0) ▾
  • Cart is empty
  1. Request CAD files
Terms
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

Series

 N/A 920000

Cone Part Number

 N/A EE921124

Design Units

 N/A Imperial

Cage Type

 N/A Pin-Type
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 N/A 591000 lbf2630000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 N/A 153000 lbf681000 N

Dimensions

d - Cone Bore

 N/A 11.2500 in285.750 mm

B - Cone Width

 N/A 3.1720 in80.569 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius3 N/A 0.380 in9.700 mm

da - Cone Frontface Backing Diameter

 N/A 12.17 in309 mm

db - Cone Backface Backing Diameter

 N/A 12.8 in325 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.29 in7.4 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.58 in14.7 mm
a - Effective Center Location4 N/A -0.53 in-13.5 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)5 N/A 88000 lbf391000 N
C1 - Dynamic Radial Rating (1 million revolutions)6 N/A 339000 lbf1510000 N

C0 - Static Radial Rating

 N/A 447000 lbf1990000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 44000 lbf196000 N

Factors

K - Factor8 N/A 2

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 1732.1

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 200
Cg - Geometry Factor9 N/A 0.148
  • 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 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 7 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.
  • 8 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 9 Geometry constant for Lubrication Life Adjustment Factor a3l.