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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

Cup Part Number

 N/A 67720

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Related Assembly Number(s)

 N/A 67790D-90123 67790D-90212 67790D-902B1 67790D-902C6

Dimensions

d - Bore

 N/A 7 in177.800 mm

D - Cup Outer Diameter

 N/A 9 3/4 in247.650 mm

B - Double Cone Width

 N/A 3.5625 in90.488 mm

C - Cup Width

 N/A 1.5000 in38.100 mm

T - Bearing Width across Cups

 N/A 3.5624 in90.485 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.06 in1.5 mm
r - Cup Backface "To Clear" Radius2 N/A 0.130 in3.30 mm

da - Cone Frontface Backing Diameter

 N/A 7.52 in191 mm

Db - Cup Backface Backing Diameter

 N/A 9.02 in229.11 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.11 in2.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 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
e - ISO Factor8 N/A 0.44
Y1 - ISO Factor9 N/A 1.54
Y2 - ISO Factor10 N/A 2.29

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 622

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 122
Cg - Geometry Factor11 N/A 0.121

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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