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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 52000

Cone Part Number

 N/A 52400D

Cup Part Number

 N/A 52639

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 4 in101.600 mm

D - Cup Outer Diameter

 N/A 6.3750 in161.925 mm

B - Double Cone Width

 N/A 3.1250 in79.375 mm

C - Cup Width

 N/A 1.5625 in39.688 mm

T - Bearing Width across Cups

 N/A 3.5311 in89.690 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 4.426 in112.42 mm

Db - Cup Backface Backing Diameter

 N/A 5.67 in144.02 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 13000 lbf57900 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 87500 lbf389000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 22700 lbf101000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 10600 lbf47100 N

Factors

K - Factor7 N/A 1.23
e - ISO Factor8 N/A 0.47
Y1 - ISO Factor9 N/A 1.42
Y2 - ISO Factor10 N/A 2.12

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 175

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 41.7
Cg - Geometry Factor11 N/A 0.152

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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