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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

Design Units

 N/A Imperial

Cage Type

 N/A Pin-Type
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 695000 lbf3090000 N

C0 - Static Radial Rating

 N/A 923000 lbf4100000 N

Dimensions

d - Cone Bore

 N/A 12 in304.8 mm

B - Double Cone Width

 N/A 11.2500 in285.750 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius2 N/A 0.13 in3.300 mm

da - Cone Frontface Backing Diameter

 N/A 13.35 in339 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.34 in8.6 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (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
Cg - Geometry Factor8 N/A 0.19
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 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 Geometry constant for Lubrication Life Adjustment Factor a3l.
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