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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 375

Cone Part Number

 N/A 376DE

Cup Part Number

 N/A 372

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 1 7/8 in47.625 mm

D - Cup Outer Diameter

 N/A 3.937 in100 mm

B - Double Cone Width

 N/A 2.0940 in53.188 mm

C - Cup Width

 N/A 0.8592 in21.824 mm

T - Bearing Width across Cups

 N/A 2.3123 in58.732 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.03 in0.800 mm
r - Cup Backface "To Clear" Radius2 N/A 0.08 in2.03 mm

da - Cone Frontface Backing Diameter

 N/A 2.17 in55 mm

Db - Cup Backface Backing Diameter

 N/A 3.39 in86.11 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.09 in2.3 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 5120 lbf22800 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 34400 lbf153000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 8920 lbf39700 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 2970 lbf13200 N

Factors

K - Factor7 N/A 1.73
e - ISO Factor8 N/A 0.34
Y1 - ISO Factor9 N/A 1.99
Y2 - ISO Factor10 N/A 2.97
Cg - Geometry Factor11 N/A 0.0816

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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