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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 475

Cone Part Number

 N/A 487TD

Cup Part Number

 N/A 473

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 2.8375 in72.073 mm

D - Cup Outer Diameter

 N/A 4.7244 in120 mm

B - Double Cone Width

 N/A 2.6590 in67.539 mm

C - Cup Width

 N/A 1.1417 in28.999 mm

T - Bearing Width across Cups

 N/A 2.7180 in69.037 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 3.15 in80 mm

Db - Cup Backface Backing Diameter

 N/A 4.21 in106.93 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.12 in3 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 7890 lbf35100 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 53000 lbf236000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 13700 lbf61100 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 5200 lbf23100 N

Factors

K - Factor7 N/A 1.52
e - ISO Factor8 N/A 0.38
Y1 - ISO Factor9 N/A 1.75
Y2 - ISO Factor10 N/A 2.61
Cg - Geometry Factor11 N/A 0.108

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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