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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 HM959700

Cone Part Number

 N/A HM959741DW

Design Units

 N/A Imperial

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 305000 lbf1360000 N

C0 - Static Radial Rating

 N/A 571000 lbf2540000 N

Dimensions

d - Cone Bore

 N/A 12.0092 in305.034 mm

B - Double Cone Width

 N/A 7.8750 in200.025 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 13.62 in345.9 mm

Ab - Cage-Cone Frontface Clearance

 N/A -0.08 in-2 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 79200 lbf352000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 532000 lbf2370000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 138000 lbf613000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 117000 lbf522000 N

Factors

K - Factor7 N/A 0.67
Cg - Geometry Factor8 N/A 0.221
  • 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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