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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 795

Cone Part Number

N/A 795

Cup Part Number

N/A 792CD

Design Unit

N/A Inch

Cage Material

N/A Stamped Steel

Related Assembly Number(s)

N/A 795-90126 795-90127 795-90128 795-90129 795-90131 795-90132 795-90139 795-902A3

Dimensions

d - Bore

N/A 4.7500 in120.650 mm

D - Cup Outer Diameter

N/A 8.1250 in206.375 mm

B - Cone Width

N/A 1.875 in47.625 mm

C - Double Cup Width

N/A 3.25 in82.55 mm

T - Bearing Width across Cones

N/A 4.2500 in107.950 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 0.030 in0.8 mm

db - Cone Backface Backing Diameter

N/A 5.59 in142 mm

Da - Cup Frontface Backing Diameter

N/A 7.83 in198.12 mm

Aa - Cage-Cone Backface Clearance

N/A 0.18 in4.6 mm
a - Effective Center Location3 N/A -0.07 in-1.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)4 N/A 22000 lbf98000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)5 N/A 148000 lbf658000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 N/A 38400 lbf171000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)7 N/A 17300 lbf77000 N

Factors

K - Factor8 N/A 1.27
e - ISO Factor9 N/A 0.46
Y1 - ISO Factor10 N/A 1.47
Y2 - ISO Factor11 N/A 2.19
Cg - Geometry Factor12 N/A 0.127
  • 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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