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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 790000

Cone Part Number

 N/A EE790119D

Cup Part Number

 N/A 790221

Design Unit

 N/A Inch

Cage Material

 N/A Pin-Type

Dimensions

d - Bore

 N/A 12 in304.8 mm

D - Cup Outer Diameter

 N/A 22.0000 in558.800 mm

B - Double Cone Width

 N/A 11.2500 in285.750 mm

C - Cup Width

 N/A 3.8750 in98.425 mm

T - Bearing Width across Cups

 N/A 11.2500 in285.750 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.13 in3.300 mm
r - Cup Backface "To Clear" Radius2 N/A 0.250 in6.35 mm

da - Cone Frontface Backing Diameter

 N/A 13.35 in339 mm

Db - Cup Backface Backing Diameter

 N/A 19.72 in500.89 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.34 in8.6 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 180000 lbf802000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 1210000 lbf5390000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 314000 lbf1400000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 122000 lbf542000 N

Factors

K - Factor7 N/A 1.48
e - ISO Factor8 N/A 0.4
Y1 - ISO Factor9 N/A 1.71
Y2 - ISO Factor10 N/A 2.54
Cg - Geometry Factor11 N/A 0.19

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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