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

Series

 N/A LM501300

Cone Part Number

 N/A LM501349A

Cup Part Number

 N/A LM501311

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 1 5/8 in41.275 mm

D - Cup Outer Diameter

 N/A 2.8910 in73.431 mm

B - Cone Width

 N/A 0.7800 in19.812 mm

C - Cup Width

 N/A 0.7160 in18.186 mm

T - Bearing Width

 N/A 0.9061 in23.015 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.03 in0.760 mm
r - Cup Backface "To Clear" Radius2 N/A 0.090 in2.29 mm

da - Cone Frontface Backing Diameter

 N/A 1.83 in46.5 mm

db - Cone Backface Backing Diameter

 N/A 1.85 in47 mm

Da - Cup Frontface Backing Diameter

 N/A 2.80 in71.10 mm

Db - Cup Backface Backing Diameter

 N/A 2.52 in64.01 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.07 in1.8 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.01 in0.3 mm
a - Effective Center Location3 N/A -0.13 in-3.3 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 4360 lbf19400 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 16800 lbf74800 N

C0 - Static Radial Rating

 N/A 16700 lbf74200 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 2980 lbf13300 N

Factors

K - Factor7 N/A 1.46
e - ISO Factor8 N/A 0.4
Y - ISO Factor9 N/A 1.5

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 23.3

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 13.3
Cg - Geometry Factor10 N/A 0.0739
  • 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 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 6 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.
  • 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.
  • 9 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 10 Geometry constant for Lubrication Life Adjustment Factor a3l.