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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 LM665900

Cone Part Number

 N/A LM665949DW

Cup Part Number

 N/A LM665911

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Dimensions

d - Bore

 N/A 15.1875 in385.763 mm

D - Cup Outer Diameter

 N/A 20.2500 in514.350 mm

B - Double Cone Width

 N/A 6.0000 in152.400 mm

C - Cup Width

 N/A 2.5 in63.5 mm

T - Bearing Width across Cups

 N/A 5.9999 in152.397 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.13 in3.300 mm
r - Cup Backface "To Clear" Radius2 N/A 0.530 in13.46 mm

da - Cone Frontface Backing Diameter

 N/A 16.1 in409 mm

Db - Cup Backface Backing Diameter

 N/A 18.58 in471.93 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.18 in4.6 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 78900 lbf351000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 530000 lbf2360000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 137000 lbf611000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 56500 lbf251000 N

Factors

K - Factor7 N/A 1.4
e - ISO Factor8 N/A 0.42
Y1 - ISO Factor9 N/A 1.61
Y2 - ISO Factor10 N/A 2.4
Cg - Geometry Factor11 N/A 0.216

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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