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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 480000

Cone Part Number

 N/A EE480181D

Design Units

 N/A Imperial

Cage Type

 N/A Pin-Type
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 1390000 lbf6190000 N

C0 - Static Radial Rating

 N/A 1980000 lbf8790000 N

Dimensions

d - Cone Bore

 N/A 18.0000 in457.200 mm

B - Double Cone Width

 N/A 14.5000 in368.300 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius2 N/A 0.25 in6.4 mm

da - Cone Frontface Backing Diameter

 N/A 20.31 in516 mm

Ab - Cage-Cone Frontface Clearance

 N/A -0.18 in-4.57 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 361000 lbf1600000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 2420000 lbf10800000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 628000 lbf2790000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 222000 lbf989000 N

Factors

K - Factor7 N/A 1.62

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 7380

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 343
Cg - Geometry Factor8 N/A 0.257
  • 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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