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 230000

Cone Part Number

 N/A EE231400

Cup Part Number

 N/A 231975

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 14 in355.6 mm

D - Cup Outer Diameter

 N/A 19.7500 in501.650 mm

B - Cone Width

 N/A 2.6250 in66.675 mm

C - Cup Width

 N/A 2.0000 in50.800 mm

T - Bearing Width

 N/A 2.9375 in74.613 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.25 in6.4 mm
r - Cup Backface "To Clear" Radius2 N/A 0.130 in3.30 mm

da - Cone Frontface Backing Diameter

 N/A 14.92 in379 mm

db - Cone Backface Backing Diameter

 N/A 15.28 in388.0 mm

Da - Cup Frontface Backing Diameter

 N/A 18.98 in481.10 mm

Db - Cup Backface Backing Diameter

 N/A 18.58 in471.93 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.3 in7.6 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.71 in18 mm
a - Effective Center Location3 N/A 0.77 in19.6 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 61300 lbf273000 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 236000 lbf1050000 N

C0 - Static Radial Rating

 N/A 420000 lbf1870000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 46200 lbf206000 N

Factors

K - Factor7 N/A 1.33
e - ISO Factor8 N/A 0.44
Y - ISO Factor9 N/A 1.36

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 2386

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 366.8
Cg - Geometry Factor10 N/A 0.187
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 2 These maximum fillet radii will be cleared by the bearing corners.
  • 3 Negative value indicates effective center inside cone backface.
  • 4 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 5 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 6 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.
  • 7 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 8 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 9 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 10 Geometry constant for Lubrication Life Adjustment Factor a3l.