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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 L217800

Cone Part Number

 N/A L217845D

Design Units

 N/A Imperial

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 20800 lbf92600 N

C0 - Static Radial Rating

 N/A 35200 lbf156000 N

Note

 N/A This part has a non-standard shoulder design. Please email customer CAD for shoulder details to ensure the proper design of mating components.

Dimensions

d - Cone Bore

 N/A 3.3750 in85.725 mm

B - Double Cone Width

 N/A 1.75 in44.45 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius2 N/A 0.03 in0.800 mm

da - Cone Frontface Backing Diameter

 N/A 3.66 in93 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.04 in1 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 5400 lbf24000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 36300 lbf161000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 9400 lbf41800 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 3050 lbf13600 N

Factors

K - Factor7 N/A 1.77

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 111

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 74.7
Cg - Geometry Factor8 N/A 0.115
  • 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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