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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 M667900

Cone Part Number

 N/A M667947DW

Design Units

 N/A Imperial

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 380000 lbf1690000 N

C0 - Static Radial Rating

 N/A 768000 lbf3420000 N

Dimensions

d - Cone Bore

 N/A 16.1250 in409.575 mm

B - Double Cone Width

 N/A 6.3750 in161.925 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 16.97 in431 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.19 in4.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 98500 lbf438000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 661000 lbf2940000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 171000 lbf763000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 70400 lbf313000 N

Factors

K - Factor7 N/A 1.4

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 4200
Cg - Geometry Factor8 N/A 0.223
  • 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.