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

Cone Part Number

 N/A EE710806

Design Units

 N/A Imperial

Cage Type

 N/A Pin-Type
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 N/A 374000 lbf1660000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 N/A 96900 lbf431000 N

Dimensions

d - Cone Bore

 N/A 8 in203.2 mm

B - Cone Width

 N/A 2.4375 in61.913 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius3 N/A 0.280 in7.110 mm

da - Cone Frontface Backing Diameter

 N/A 9.09 in230.9 mm

db - Cone Backface Backing Diameter

 N/A 9.65 in245.1 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.33 in8.4 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.32 in8.1 mm
a - Effective Center Location4 N/A 0.48 in12.2 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)5 N/A 55600 lbf248000 N
C1 - Dynamic Radial Rating (1 million revolutions)6 N/A 215000 lbf955000 N

C0 - Static Radial Rating

 N/A 287000 lbf1280000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 45000 lbf200000 N

Factors

K - Factor8 N/A 1.24

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 914.9

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 114.2
Cg - Geometry Factor9 N/A 0.14
  • 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.