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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.

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Unit of Measure

Specifications

Series

N/A 15000

Cone Part Number

N/A 15100-S

Cup Part Number

N/A 15251D

Design Units

N/A Imperial

Bearing Weight

N/A 1.54 lb0.699 Kg

Cage Type

N/A Stamped Steel

Ab - Cage-Cone Frontface Clearance

N/A 0.07 in1.8 mm

Alternate Part Name

N/A 15100-S-15251D

Dimensions

d - Bore

N/A 1.0000 in25.400 mm

D - Cup Outer Diameter

N/A 2.5000 in63.500 mm

B - Cone Width

N/A 0.8125 in20.638 mm

C - Double Cup Width

N/A 1.4375 in36.513 mm

T - Bearing Width across Cones

N/A 1.8124 in46.035 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.050 in1.300 mm
r - Cup Frontface "To Clear" Radius2 N/A 0.03 in0.8 mm

db - Cone Backface Backing Diameter

N/A 1.32 in33.5 mm

Da - Cup Frontface Backing Diameter

N/A 2.34 in58.93 mm

Aa - Cage-Cone Backface Clearance

N/A 0.03 in0.8 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 3490 lbf15500 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 23400 lbf104000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 6080 lbf27000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 2090 lbf9310 N

Factors

K - Factor7 N/A 1.67
e - ISO Factor8 N/A 0.35
Y1 - ISO Factor9 N/A 1.93
Y2 - ISO Factor10 N/A 2.87
G1 - Heat Generation Factor (Roller-Raceway)11 N/A 14.6

G2 - Heat Generation Factor (Rib-Roller End)

N/A 7.58
Cg - Geometry Factor12 N/A 0.0606
  • 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 for a single-row, C90(2) is the two-row radial value.
  • 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 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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