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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 290000

Cone Part Number

 N/A EE291176D

Design Units

 N/A Imperial

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 199000 lbf887000 N

C0 - Static Radial Rating

 N/A 312000 lbf1390000 N

Dimensions

d - Cone Bore

 N/A 11.7500 in298.450 mm

B - Double Cone Width

 N/A 4.2500 in107.950 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius2 N/A 0.310 in7.900 mm

da - Cone Frontface Backing Diameter

 N/A 13.07 in332 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 51700 lbf230000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 347000 lbf1540000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 90000 lbf400000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 33400 lbf149000 N

Factors

K - Factor7 N/A 1.55
Cg - Geometry Factor8 N/A 0.156
  • 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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