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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 67700

Cone Part Number

 N/A 67790D

Design Units

 N/A Imperial

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 91100 lbf405000 N

C0 - Static Radial Rating

 N/A 175000 lbf779000 N

Dimensions

d - Cone Bore

 N/A 7 in177.800 mm

B - Double Cone Width

 N/A 3.5625 in90.488 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 7.52 in191 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.11 in2.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 23600 lbf105000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 159000 lbf705000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 41100 lbf183000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 17800 lbf79000 N

Factors

K - Factor7 N/A 1.33

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 622

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 122
Cg - Geometry Factor8 N/A 0.121
  • 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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