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SR bearings are made to a standard setting range, based on Timken’s Set-Right™ automated setting technique, and are suitable for most industrial applications. They have two spacers and an optional snap-ring for axial location. Because both types are made from popular sizes of single-row bearings, they provide a low-cost choice for many applications.

Design Attributes:
  • Two TS bearings mounted indirectly with cone and cup spacers.
  • Cup spacer features lubrication slots to allow commercial snap rings to locate bearings axially.
  • Two J-Line™ Class N bearings with metric envelop and non-metric internal geometry.
Unit of Measure

Key Dimensions

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

Bore (d)

 N/A 50 mm1.9685 in

O.D. (D)

 N/A 90 mm3.5433 in

Width (T)

 N/A 62 mm2.4409 in
Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 255000 N57400 lbf
Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 38000 N8540 lbf
Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)3 N/A 66200 N14900 lbf
e Factor 4 N/A 0.33
K Factor 5 N/A 1.78

Other Dimensions

Weight

 N/A 1.56 Kg3.44 lb

Outer Ring Width (C)

 N/A 51.438 mm2.0251 in
Max Shaft Fillet Radius6 N/A 3.050 mm0.120 in
Max Housing Fillet Radius7 N/A 0.5 mm0.02 in

Shaft Backing Shoulder Dia. - Backface (db)

 N/A 63 mm2.48 in

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 85.10 mm3.39 in

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)8 N/A 21400 N4810 lbf

Factors

Y1 Factor 9 N/A 2.05
Y2 Factor 10 N/A 3.06
  • 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 2 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 5 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 6 These maximum fillet radii will be cleared by the bearing corners.
  • 7 These maximum fillet radii will be cleared by the bearing corners.
  • 8 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.
  • 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.