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 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

Bore (d)

 N/A 50 mm1.9685 in

O.D. (D)

 N/A 82.000 mm3.2283 in

Width (T)

 N/A 49 mm1.9291 in
Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 168000 N37700 lbf
Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 25000 N5610 lbf
Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)3 N/A 43500 N9770 lbf
e Factor 4 N/A 0.31
K Factor 5 N/A 1.91

Other Dimensions

Weight

 N/A 0.91 Kg2.01 lb

Outer Ring Width (C)

 N/A 39.425 mm1.5522 in
Max Shaft Fillet Radius6 N/A 3.050 mm0.12 in
Max Housing Fillet Radius7 N/A 0.4 mm0.02 in

Shaft Backing Shoulder Dia. - Backface (db)

 N/A 61 mm2.4 in

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 78.00 mm3.11 in

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)8 N/A 13000 N2930 lbf

Factors

Y1 Factor 9 N/A 2.21
Y2 Factor 10 N/A 3.29
  • 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.