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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 395

Cone Part Number

 N/A 392DW

Cup Part Number

 N/A 393A

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 2 7/16 in61.913 mm

D - Cup Outer Diameter

 N/A 4.4375 in112.713 mm

B - Double Cone Width

 N/A 2.875 in73.025 mm

C - Cup Width

 N/A 0.6250 in15.875 mm

T - Bearing Width across Cups

 N/A 2.2047 in55.999 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 0.130 in3.30 mm

da - Cone Frontface Backing Diameter

 N/A 2.76 in70 mm

Db - Cup Backface Backing Diameter

 N/A 3.94 in100.08 mm

Ab - Cage-Cone Frontface Clearance

 N/A -0.23 in-5.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 5440 lbf24200 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 36600 lbf163000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 9480 lbf42200 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 3750 lbf16700 N

Factors

K - Factor7 N/A 1.45
e - ISO Factor8 N/A 0.4
Y1 - ISO Factor9 N/A 1.68
Y2 - ISO Factor10 N/A 2.5
Cg - Geometry Factor11 N/A 0.0984

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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