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 LM251600

Cone Part Number

 N/A LM251649NW

Design Units

 N/A Imperial

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 N/A 221000 lbf985000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 N/A 57400 lbf255000 N

Dimensions

d - Cone Bore

 N/A 10 1/2 in266.7 mm

B - Cone Width

 N/A 2.125 in53.975 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius3 N/A 0.25 in6.35 mm

da - Cone Frontface Backing Diameter

 N/A 11.22 in285 mm

db - Cone Backface Backing Diameter

 N/A 11.46 in291.0 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0 in0 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.18 in4.6 mm
a - Effective Center Location4 N/A 0.16 in4.1 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)5 N/A 33000 lbf147000 N
C1 - Dynamic Radial Rating (1 million revolutions)6 N/A 127000 lbf566000 N

C0 - Static Radial Rating

 N/A 269000 lbf1200000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 18000 lbf80100 N

Factors

K - Factor8 N/A 1.83
  • 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.