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 220000

Cone Part Number

 N/A EE221018

Cup Part Number

 N/A 221575

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 10.1875 in258.763 mm

D - Cup Outer Diameter

 N/A 15.7500 in400.050 mm

B - Cone Width

 N/A 2.6563 in67.470 mm

C - Cup Width

 N/A 1.8125 in46.038 mm

T - Bearing Width

 N/A 2.7500 in69.850 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.380 in9.700 mm
r - Cup Backface "To Clear" Radius2 N/A 0.250 in6.35 mm

da - Cone Frontface Backing Diameter

 N/A 10.98 in279 mm

db - Cone Backface Backing Diameter

 N/A 11.61 in295 mm

Da - Cup Frontface Backing Diameter

 N/A 14.65 in372.10 mm

Db - Cup Backface Backing Diameter

 N/A 14.41 in366.01 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.27 in6.9 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.53 in13.5 mm
a - Effective Center Location3 N/A 0.03 in0.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 55300 lbf246000 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 213000 lbf949000 N

C0 - Static Radial Rating

 N/A 326000 lbf1450000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 37400 lbf166000 N

Factors

K - Factor7 N/A 1.48
e - ISO Factor8 N/A 0.39
Y - ISO Factor9 N/A 1.52

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 1320.8

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 207.5
Cg - Geometry Factor10 N/A 0.150
  • 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.