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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 HM259000

Cone Part Number

 N/A HM259047DW

Cup Part Number

 N/A HM259010

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

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.

Related Assembly Number(s)

 N/A HM259047DW-902A3 HM259047DW-902A4 HM259047DW-902A6

Dimensions

d - Bore

 N/A 12.5000 in317.500 mm

D - Cup Outer Diameter

 N/A 17.6250 in447.675 mm

B - Double Cone Width

 N/A 6.2500 in158.750 mm

C - Cup Width

 N/A 2.6875 in68.263 mm

T - Bearing Width across Cups

 N/A 6.2499 in158.747 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.13 in3.300 mm
r - Cup Backface "To Clear" Radius2 N/A 0.130 in3.30 mm

da - Cone Frontface Backing Diameter

 N/A 13.39 in340 mm

Db - Cup Backface Backing Diameter

 N/A 16.46 in418.08 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.2 in5.1 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 90000 lbf400000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 605000 lbf2690000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 157000 lbf697000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 51600 lbf230000 N

Factors

K - Factor7 N/A 1.74
e - ISO Factor8 N/A 0.33
Y1 - ISO Factor9 N/A 2.02
Y2 - ISO Factor10 N/A 3
Cg - Geometry Factor11 N/A 0.181

Spacer

Note

 N/A Spacer shows standard nominal .01 radii, actual bearing may vary
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 9 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 10 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 11 Geometry constant for Lubrication Life Adjustment Factor a3l.
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