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The configuration of the TDO provides a wide effective bearing spread, making it ideal for applications in which overturning moments are a significant load component. TDO bearings can be used in fixed positions or allowed to float in the housing bore.
Unit of Measure

Specifications

Series

 N/A 895

Cone Part Number

 N/A 898

Cup Part Number

 N/A 892CD

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Related Assembly Number(s)

 N/A 898-90055 898-90056 898-90058 898-90064 898-90065 898-90067 898-90073 898-902A2 898-902A3 898-9U2B4

Dimensions

d - Bore

 N/A 5 1/2 in139.700 mm

D - Cup Outer Diameter

 N/A 9.0000 in228.600 mm

B - Cone Width

 N/A 2.2500 in57.150 mm

C - Double Cup Width

 N/A 3.8750 in98.425 mm

T - Bearing Width across Cones

 N/A 4.8749 in123.822 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.14 in3.600 mm
r - Cup Backface "To Clear" Radius2 N/A 0.06 in1.5 mm

db - Cone Backface Backing Diameter

 N/A 6.38 in162 mm

Da - Cup Frontface Backing Diameter

 N/A 8.54 in216.90 mm

Aa - Cage-Cone Backface Clearance

 N/A 0.19 in4.8 mm
a - Effective Center Location3 N/A -0.24 in-6.1 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4 N/A 30300 lbf135000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5 N/A 204000 lbf906000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 N/A 52800 lbf235000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 21800 lbf97200 N

Factors

K - Factor8 N/A 1.39
e - ISO Factor9 N/A 0.42
Y1 - ISO Factor10 N/A 1.6
Y2 - ISO Factor11 N/A 2.39
Cg - Geometry Factor12 N/A 0.135
  • 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 Negative value indicates effective center inside cone backface.
  • 4 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 5 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 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 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.
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 12 Geometry constant for Lubrication Life Adjustment Factor a3l.
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