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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 99000

Cone Part Number

 N/A 99587D

Design Units

 N/A Imperial

Cage Type

 N/A Stamped Steel
C1 - Dynamic Radial Rating (1 million revolutions)1 N/A 148000 lbf660000 N

C0 - Static Radial Rating

 N/A 231000 lbf1030000 N

Dimensions

d - Cone Bore

 N/A 5.8750 in149.225 mm

B - Double Cone Width

 N/A 4.7500 in120.650 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius2 N/A 0.06 in1.5 mm

da - Cone Frontface Backing Diameter

 N/A 6.57 in167 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.19 in4.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 38500 lbf171000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 258000 lbf1150000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 67000 lbf298000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 26800 lbf119000 N

Factors

K - Factor7 N/A 1.43

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 556

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 73.5
Cg - Geometry Factor8 N/A 0.146
  • 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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