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 23000

Cone Part Number

 N/A 23092

Cup Part Number

 N/A 23256

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 15/16 in23.813 mm

D - Cup Outer Diameter

 N/A 2.5625 in65.088 mm

B - Cone Width

 N/A 0.8450 in21.463 mm

C - Cup Width

 N/A 0.6250 in15.875 mm

T - Bearing Width

 N/A 0.8750 in22.225 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.06 in1.5 mm
r - Cup Backface "To Clear" Radius2 N/A 0.06 in1.52 mm

da - Cone Frontface Backing Diameter

 N/A 1.36 in34.5 mm

db - Cone Backface Backing Diameter

 N/A 1.52 in38.5 mm

Da - Cup Frontface Backing Diameter

 N/A 2.52 in63.00 mm

Db - Cup Backface Backing Diameter

 N/A 2.09 in53.09 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.1 in2.5 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.12 in3 mm
a - Effective Center Location3 N/A -0.09 in-2.3 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 3180 lbf14200 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 12300 lbf54600 N

C0 - Static Radial Rating

 N/A 12500 lbf55800 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 3990 lbf17700 N

Factors

K - Factor7 N/A 0.8
e - ISO Factor8 N/A 0.73
Y - ISO Factor9 N/A 0.82
Cg - Geometry Factor10 N/A 0.070
  • 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.