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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 HH258200

Cone Part Number

 N/A HH258249D

Cup Part Number

 N/A HH258210

Design Unit

 N/A Inch

Cage Material

 N/A Pin-Type

Related Assembly Number(s)

 N/A HH258249D-90016 HH258249D-90018 HH258249D-90019 HH258249D-90021 HH258249D-90022 HH258249D-90023

Dimensions

d - Bore

 N/A 11.9375 in303.213 mm

D - Cup Outer Diameter

 N/A 19.5000 in495.300 mm

B - Double Cone Width

 N/A 10.3750 in263.525 mm

C - Cup Width

 N/A 4.5000 in114.300 mm

T - Bearing Width across Cups

 N/A 10.3749 in263.522 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.13 in3.300 mm
r - Cup Backface "To Clear" Radius2 N/A 0.250 in6.35 mm

da - Cone Frontface Backing Diameter

 N/A 13.35 in339 mm

Db - Cup Backface Backing Diameter

 N/A 17.64 in448.06 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.36 in9.1 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 167000 lbf744000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 1120000 lbf5000000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 291000 lbf1300000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 95200 lbf423000 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
Cg - Geometry Factor11 N/A 0.205

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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