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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 HH255100

Cone Part Number

 N/A HH255149D

Design Units

 N/A Imperial

Cage Type

 N/A Pin-Type
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 588000 lbf2620000 N

C0 - Static Radial Rating

 N/A 1080000 lbf4820000 N

Dimensions

d - Cone Bore

 N/A 11.0000 in279.4 mm

B - Double Cone Width

 N/A 9.6250 in244.475 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 12.17 in309 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.29 in7.4 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 153000 lbf679000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 1020000 lbf4560000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 266000 lbf1180000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 86800 lbf386000 N

Factors

K - Factor7 N/A 1.76
Cg - Geometry Factor8 N/A 0.192
  • 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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