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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 LM287600

Cone Part Number

 N/A LM287649D

Cup Part Number

 N/A LM287610

Design Unit

 N/A Inch

Cage Material

 N/A Pin-Type

Dimensions

d - Bore

 N/A 36.9375 in938.213 mm

D - Cup Outer Diameter

 N/A 50.0000 in1270.000 mm

B - Double Cone Width

 N/A 15.7500 in400.050 mm

C - Cup Width

 N/A 6.6875 in169.863 mm

T - Bearing Width across Cups

 N/A 15.7499 in400.047 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.190 in4.800 mm
r - Cup Backface "To Clear" Radius2 N/A 0.5 in12.70 mm

da - Cone Frontface Backing Diameter

 N/A 38.98 in990 mm

Db - Cup Backface Backing Diameter

 N/A 46.85 in1190.00 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.56 in14.2 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 532000 lbf2360000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 3570000 lbf15900000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 926000 lbf4120000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 303000 lbf1350000 N

Factors

K - Factor7 N/A 1.76
e - ISO Factor8 N/A 0.33
Y1 - ISO Factor9 N/A 2.03
Y2 - ISO Factor10 N/A 3.02

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 37200

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 1610
Cg - Geometry Factor11 N/A 0.428

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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