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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 HH258200

Cone Part Number

 N/A HH258249D

Design Units

 N/A Imperial

Cage Type

 N/A Pin-Type
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 645000 lbf2870000 N

C0 - Static Radial Rating

 N/A 1270000 lbf5650000 N

Dimensions

d - Cone Bore

 N/A 11.9375 in303.213 mm

B - Double Cone Width

 N/A 10.3750 in263.525 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 0.36 in9.1 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 167000 lbf744000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 1120000 lbf5000000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 291000 lbf1300000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 95200 lbf423000 N

Factors

K - Factor7 N/A 1.76
Cg - Geometry Factor8 N/A 0.205
  • 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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