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

Specifications

Cone Part Number

 N/A JM205149

Cup Part Number

 N/A JM205110

Inner Spacer Part Number

 N/A M205149XS

Outer Spacer Part Number

 N/A M205110ES

Snap Ring Part Number

 N/A K516778R

Design Unit

 N/A Metric

Dimensions

d - Bore

 N/A 50 mm1.9685 in

D - Cup Outer Diameter

 N/A 90 mm3.5433 in

T - Width

 N/A 62 mm2.4409 in

C - Width

 N/A 51.438 mm2.0251 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 0.5 mm0.020 in

db - Cone Backface Backing Diameter

 N/A 63 mm2.48 in

Da - Cup Frontface Backing Diameter

 N/A 85.10 mm3.39 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 38000 N8540 lbf
C1 - Dynamic Radial Rating (1 million revolutions)4 N/A 255000 N57400 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)5 N/A 21400 N4810 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 N/A 66200 N14900 lbf

Factors

K - Factor7 N/A 1.78
e - ISO Factor8 N/A 0.33
Y1 - ISO Factor9 N/A 2.05
Y2 - ISO Factor10 N/A 3.06
  • 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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