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

Specifications

Cone Part Number

 N/A JLM104948

Cup Part Number

 N/A JLM104910

Inner Spacer Part Number

 N/A LM104948XS

Outer Spacer Part Number

 N/A LM104910ES

Snap Ring Part Number

 N/A K444653R

Design Unit

 N/A Metric

Dimensions

d - Bore

 N/A 50 mm1.9685 in

D - Cup Outer Diameter

 N/A 82.000 mm3.2283 in

T - Width

 N/A 49 mm1.9291 in

C - Width

 N/A 39.425 mm1.5522 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 0.40 mm0.020 in

db - Cone Backface Backing Diameter

 N/A 61 mm2.4 in

Da - Cup Frontface Backing Diameter

 N/A 78.00 mm3.11 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)3 N/A 25000 N5610 lbf
C1 - Dynamic Radial Rating (1 million revolutions)4 N/A 168000 N37700 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)5 N/A 13000 N2930 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)6 N/A 43500 N9770 lbf

Factors

K - Factor7 N/A 1.91
e - ISO Factor8 N/A 0.31
Y1 - ISO Factor9 N/A 2.21
Y2 - ISO Factor10 N/A 3.29
  • 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.