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Tapered Roller Bearings - 2TS-DM (Matched Bearing Assembly, Direct Mount)
Unit of Measure

Specifications

Cone Part Number

 N/A JHM720249

Cup Part Number

 N/A JHM720210

Outer Spacer Part Number

 N/A JY16018R

Design Unit

 N/A Metric

Dimensions

d - Bore

 N/A 3.937 in100 mm

D - Cup Outer Diameter

 N/A 6.2992 in160 mm

T - Width

 N/A 3.2284 in82 mm

B - Width

 N/A 3.1496 in80 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.010 in0.3 mm
r - Cup Backface "To Clear" Radius2 N/A 0.1 in2.54 mm

db - Cone Backface Backing Diameter

 N/A 4.61 in117 mm

Da - Cup Frontface Backing Diameter

 N/A 6.08 in154.43 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 19300 lbf85800 N
C1 - Dynamic Radial Rating (1 million revolutions)4 N/A 130000 lbf576000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)5 N/A 15500 lbf69100 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 N/A 33600 lbf149000 N

Factors

K - Factor7 N/A 1.24
e - ISO Factor8 N/A 0.47
Y1 - ISO Factor9 N/A 1.43
Y2 - ISO Factor10 N/A 2.14
  • 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.
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