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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 920000

Cone Part Number

 N/A EE921150D

Cup Part Number

 N/A 921850

Design Unit

 N/A Inch

Cage Material

 N/A Pin-Type

Note

 N/A This part has a non-standard shoulder design. Please email customer CAD for shoulder details to ensure the proper design of mating components.

Dimensions

d - Bore

 N/A 11 1/2 in292.100 mm

D - Cup Outer Diameter

 N/A 18.5000 in469.900 mm

B - Double Cone Width

 N/A 5.6250 in142.875 mm

C - Cup Width

 N/A 2.2500 in57.150 mm

T - Bearing Width across Cups

 N/A 5.4695 in138.925 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 0.130 in3.30 mm

da - Cone Frontface Backing Diameter

 N/A 12.36 in314 mm

Db - Cup Backface Backing Diameter

 N/A 17.28 in438.91 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.16 in4.1 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 88000 lbf391000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 591000 lbf2630000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 153000 lbf681000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 44000 lbf196000 N

Factors

K - Factor7 N/A 2
e - ISO Factor8 N/A 0.29
Y1 - ISO Factor9 N/A 2.31
Y2 - ISO Factor10 N/A 3.44
Cg - Geometry Factor11 N/A 0.148

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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