The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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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 LM348900

Cup Part Number

 N/A LM348915X

Design Units

 N/A Imperial

Note

 N/A This part has a non-standard shoulder design. Please email customer CAD for shoulder details to ensure the proper design of mating components.

Dimensions

D - Cup Outer Diameter

 N/A 13.7460 in349.148 mm

C - Cup Width

 N/A 1.9291 in48.999 mm

Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1 N/A 0.1 in2.5 mm

Db - Cup Backface Backing Diameter

 N/A 12.76 in324.10 mm

Factors

K - Factor2 N/A 1.64
e - ISO Factor3 N/A 0.76
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 2 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.