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Tapered Roller Bearings - SR (Matched Bearing Assembly, SET-RIGHT™)
Unit of Measure

Specifications

Cone Part Number

 N/A JM612949

Cup Part Number

 N/A JM612910

Inner Spacer Part Number

 N/A M612949XS

Outer Spacer Part Number

 N/A M612910ES

Snap Ring Part Number

 N/A K524105R

Design Unit

 N/A Metric

Dimensions

d - Bore

 N/A 70 mm2.7559 in

D - Cup Outer Diameter

 N/A 115 mm4.5276 in

T - Width

 N/A 64 mm2.5197 in

C - Width

 N/A 51.507 mm2.0278 in

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 3.050 mm0.12 in
r - Cup Backface "To Clear" Radius2 N/A 0.6 mm0.030 in

db - Cone Backface Backing Diameter

 N/A 83 mm3.27 in

Da - Cup Frontface Backing Diameter

 N/A 110.00 mm4.35 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 46100 N10400 lbf
C1 - Dynamic Radial Rating (1 million revolutions)4 N/A 310000 N69600 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)5 N/A 33900 N7630 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 N/A 80300 N18000 lbf

Factors

K - Factor7 N/A 1.36
e - ISO Factor8 N/A 0.43
Y1 - ISO Factor9 N/A 1.57
Y2 - ISO Factor10 N/A 2.34
  • 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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