Aerospace / Military
Aerospace Series General Aviation Rod Ends Spherical Bearings Mil Spec Series Rod Ends Spherical Bearings Bushings Approved Part Numbers
Commercial / Industrial
Rod End Bearings Inch Rod Ends Metric Rod Ends Spherical Bearings Inch Spherical Bearings Metric Spherical Bearings
Technical Resources
Terms and Definitions Articles Technical Data FAQs Key Term Translation Custom Engineered Products
Online Catalog
Engineers power search our entire catalog of bearing and bushings, with access to every attribute and technical specification possible. View our online catalog...
CAD (0) ▾
  • Cart is empty
  1. Request CAD files
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 02800

Cup Part Number

 N/A 02830

Design Units

 N/A Imperial

Dimensions

D - Cup Outer Diameter

 N/A 2.8750 in73.025 mm

C - Cup Width

 N/A 0.6875 in17.463 mm

Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1 N/A 0.030 in0.76 mm

Da - Cup Frontface Backing Diameter

 N/A 2.72 in68.10 mm

Db - Cup Backface Backing Diameter

 N/A 2.52 in64.01 mm

Factors

K - Factor2 N/A 1.29
e - ISO Factor3 N/A 0.45
Y - ISO Factor4 N/A 1.32

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 20.6

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 10.1
Cg - Geometry Factor5 N/A 0.074
  • 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.
  • 4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 5 Geometry constant for Lubrication Life Adjustment Factor a3l.