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 724000

Cone Part Number

 N/A EE724119

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 lbf682000 N

Dimensions

d - Cone Bore

 N/A 12 in304.8 mm

B - Cone Width

 N/A 3.6250 in92.075 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius3 N/A 0.630 in16.000 mm

da - Cone Frontface Backing Diameter

 N/A 12.99 in330 mm

db - Cone Backface Backing Diameter

 N/A 14.13 in359 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.26 in6.6 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.51 in12.95 mm
a - Effective Center Location4 N/A -0.06 in-1.5 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)5 N/A 88000 lbf392000 N
C1 - Dynamic Radial Rating (1 million revolutions)6 N/A 339000 lbf1510000 N

C0 - Static Radial Rating

 N/A 595000 lbf2650000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 60600 lbf269000 N

Factors

K - Factor8 N/A 1.45

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 2242.3

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 170
Cg - Geometry Factor9 N/A 0.180
  • 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.