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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 275000

Cone Part Number

 N/A EE275109D

Design Units

 N/A Imperial

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 198000 lbf883000 N

C0 - Static Radial Rating

 N/A 359000 lbf1600000 N

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 - Cone Bore

 N/A 10.875 in276.225 mm

B - Double Cone Width

 N/A 5.1250 in130.175 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius2 N/A 0.06 in1.5 mm

da - Cone Frontface Backing Diameter

 N/A 11.56 in293.62 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.03 in0.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 51400 lbf229000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 345000 lbf1540000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 89600 lbf398000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 35400 lbf157000 N

Factors

K - Factor7 N/A 1.45

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 1450

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 201
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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