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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.

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Unit of Measure

Specifications

Series

N/A 475

Cone Part Number

N/A 487TD

Cup Part Number

N/A 474

Design Units

N/A Imperial

Bearing Weight

N/A 8.7 lb3.90 Kg

Cage Type

N/A Stamped Steel

Aa - Cage-Cone Backface Clearance

N/A 0 in0 mm

Dimensions

d - Bore

N/A 2.8375 in72.073 mm

D - Cup Outer Diameter

N/A 5.1181 in130.000 mm

B - Double Cone Width

N/A 2.6590 in67.539 mm

C - Cup Width

N/A 1.2205 in31.001 mm

T - Bearing Width across Cups

N/A 2.8756 in73.040 mm

Abutment and Fillet Dimensions

R - Cone Frontface "To Clear" Radius1 N/A 0.030 in0.80 mm
r - Cup Backface "To Clear" Radius2 N/A 0.08 in2 mm

Db - Cup Backface Backing Diameter

N/A 4.37 in111.00 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 for a single-row, C90(2) is the two-row radial value.
  • 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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