Menu
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

Series

 N/A L724300

Cone Part Number

 N/A JL724348

Design Units

 N/A METRIC

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 N/A 252000 N56800 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 N/A 65500 N14700 lbf

Full Timken Part Number

 N/A L724300

Dimensions

d - Cone Bore

 N/A 120 mm4.7244 in

B - Cone Width

 N/A 25.400 mm1.0000 in

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius3 N/A 3.300 mm0.13 in

da - Cone Frontface Backing Diameter

 N/A 127 mm5 in

db - Cone Backface Backing Diameter

 N/A 132 mm5.2 in

Ab - Cage-Cone Frontface Clearance

 N/A 2 mm0.08 in

Aa - Cage-Cone Backface Clearance

 N/A 2 mm0.08 in
a - Effective Center Location4 N/A 7.9 mm0.31 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)5 N/A 37600 N8450 lbf
C1 - Dynamic Radial Rating (1 million revolutions)6 N/A 145000 N32600 lbf

C0 - Static Radial Rating

 N/A 231000 N52000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 29500 N6640 lbf

Factors

K - Factor8 N/A 1.27

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 170

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 70.6
Cg - Geometry Factor9 N/A 0.147
  • 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.
By clicking Submit, you consent to the personal information you provide being used in the manner as described in our Privacy Notice, including access to that information by Timken personnel who may be located outside your home country. In addition, you agree that the CAD drawings are for your personal, one-time use only, and that you will not modify or create any compilation or derivative work using the CAD drawings or distribute or display the CAD drawings on any website or other media.