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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 HM261000

Cone Part Number

 N/A HM261049DW

Design Units

 N/A Imperial

Cage Type

 N/A Pin-Type
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 360000 lbf1600000 N

C0 - Static Radial Rating

 N/A 777000 lbf3460000 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 13.1250 in333.375 mm

B - Double Cone Width

 N/A 6.5625 in166.688 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 14.06 in357 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.25 in6.4 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 93200 lbf415000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 626000 lbf2780000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 162000 lbf722000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 53400 lbf238000 N

Factors

K - Factor7 N/A 1.74

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 3310

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 324
Cg - Geometry Factor8 N/A 0.194
  • 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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