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

Cone Part Number

 N/A LM377449H

Cup Part Number

 N/A LM377410

Design Unit

 N/A Metric

Related Assembly Number(s)

 N/A LM377449H-902C5 LM377449H-902D7 LM377449H-90WD5 LM377449H-90WD6

Dimensions

d - Bore

 N/A 558.8 mm22 in

D - Cup Outer Diameter

 N/A 736.600 mm29.0000 in

B - Cone Width

 N/A 93 mm3.6614 in

C - Cup Width

 N/A 80.963 mm3.1875 in

T - Bearing Width

 N/A 104.775 mm4.125 in

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 6.4 mm0.25 in
r - Cup Backface "To Clear" Radius2 N/A 6.35 mm0.250 in

db - Cone Backface Backing Diameter

 N/A 594 mm23.39 in

Da - Cup Frontface Backing Diameter

 N/A 710.20 mm27.96 in

Db - Cup Backface Backing Diameter

 N/A 695.96 mm27.40 in

Ab - Cage-Cone Frontface Clearance

 N/A 10.16 mm0.4 in

Aa - Cage-Cone Backface Clearance

 N/A 6.9 mm0.27 in
a - Effective Center Location3 N/A 15.8 mm0.62 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 741000 N167000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)5 N/A 439000 N98800 lbf

Factors

K - Factor6 N/A 1.69
e - ISO Factor7 N/A 0.35
Y - ISO Factor8 N/A 1.73
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 2 These maximum fillet radii will be cleared by the bearing corners.
  • 3 Negative value indicates effective center inside cone backface.
  • 4 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 5 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.
  • 6 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 7 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 8 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
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.