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TDI bearings have a one-piece double inner race and two single outer races and are typically supplied complete with an outer race spacer as a pre-set assembly. The bearing can be used at fixed positions on rotation shaft applications. For rotating housing application it can be used to float on the stationary shaft.
Unit of Measure

Specifications

Series

 N/A 220000

Cone Part Number

 N/A EE221025D

Cup Part Number

 N/A 221575

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Related Assembly Number(s)

 N/A EE221025D-90088 EE221025D-90090

Dimensions

d - Bore

 N/A 10.2500 in260.350 mm

D - Cup Outer Diameter

 N/A 15.7500 in400.050 mm

B - Double Cone Width

 N/A 4.5000 in114.300 mm

C - Cup Width

 N/A 1.8125 in46.038 mm

T - Bearing Width across Cups

 N/A 4.6873 in119.057 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 0.250 in6.35 mm

da - Cone Frontface Backing Diameter

 N/A 11.42 in290 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

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 48200 lbf215000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 324000 lbf1440000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 84000 lbf374000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 32600 lbf145000 N

Factors

K - Factor7 N/A 1.48
e - ISO Factor8 N/A 0.39
Y1 - ISO Factor9 N/A 1.71
Y2 - ISO Factor10 N/A 2.55
Cg - Geometry Factor11 N/A 0.15

Spacer

Note

 N/A Spacer shows standard nominal .01 radii, actual bearing may vary
  • 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 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 4 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 5 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.
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 11 Geometry constant for Lubrication Life Adjustment Factor a3l.
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