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 L44600

Cone Part Number

 N/A JL44642A

Design Units

 N/A METRIC

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 N/A 62000 N13900 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 N/A 16100 N3610 lbf

Full Timken Part Number

 N/A L44600

Dimensions

d - Cone Bore

 N/A 25 mm0.9843 in

B - Cone Width

 N/A 14.732 mm0.5800 in

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius3 N/A 1.270 mm0.050 in

da - Cone Frontface Backing Diameter

 N/A 30 mm1.18 in

db - Cone Backface Backing Diameter

 N/A 32 mm1.26 in

Ab - Cage-Cone Frontface Clearance

 N/A 1 mm0.04 in

Aa - Cage-Cone Backface Clearance

 N/A 0.5 mm0.02 in
a - Effective Center Location4 N/A -3.3 mm-0.13 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)5 N/A 9230 N2080 lbf
C1 - Dynamic Radial Rating (1 million revolutions)6 N/A 35600 N8010 lbf

C0 - Static Radial Rating

 N/A 32900 N7400 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 5910 N1330 lbf

Factors

K - Factor8 N/A 1.56

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 8.9

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 8.93
Cg - Geometry Factor9 N/A 0.0526
  • 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.