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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 LM272200

Cone Part Number

 N/A LM272249DW

Design Units

 N/A Imperial

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 380000 lbf1690000 N

C0 - Static Radial Rating

 N/A 921000 lbf4100000 N

Dimensions

d - Cone Bore

 N/A 19.0000 in482.600 mm

B - Double Cone Width

 N/A 6.2500 in158.750 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius2 N/A 0.13 in3.300 mm

da - Cone Frontface Backing Diameter

 N/A 19.84 in504 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.23 in5.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 98600 lbf439000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 662000 lbf2950000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 172000 lbf764000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 56100 lbf250000 N

Factors

K - Factor7 N/A 1.76

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 6040

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 665
Cg - Geometry Factor8 N/A 0.233
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 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 Geometry constant for Lubrication Life Adjustment Factor a3l.
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