Aurora Bearing Company
Aurora Bearing Company
901 Aucutt Rd.
Montgomery, IL 60538
Phone: 630.859.2030 • Fax: 630.859.0971
Email: customersupport@aurorabearing.com • Website: www.aurorabearing.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 L289400

Cup Part Number

 N/A L289410

Design Units

 N/A Imperial

Dimensions

D - Cup Outer Diameter

 N/A 75.3887 in1914.873 mm

C - Cup Width

 N/A 9.2520 in235.001 mm

Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1 N/A 0.510 in13.00 mm

Db - Cup Backface Backing Diameter

 N/A 71.46 in1815.10 mm

Factors

K - Factor2 N/A 1.76
e - ISO Factor3 N/A 0.7
  • 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.