The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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2TS-IM assemblies are comprised of two single-row bearings with an inner and outer ring spacer. In some applications, a shoulder in the bearing housing replaces the outer ring spacer.

Design Attributes
  • Stainless steel ball bearing inserts with set screw
  • Steel spacers are used to create Bench End Play (BEP) or Preload (BPL) in the bearing assembly
  • Available with or without spacers
  • Spacers preset during manufacture
Unit of Measure

Key Dimensions

Cone Part Number

 N/A 8578

Cup Part Number

 N/A 8520

Inner Spacer Part Number

 N/A X1S-8578

Outer Spacer Part Number

 N/A Y7S-8520

Bore (d)

 N/A 9.5000 in241.300 mm

O.D. (D)

 N/A 12.875 in327.025 mm

Width (T)

 N/A 4.5000 in114.300 mm
Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 206000 lbf918000 N
Dynamic Radial Load Rating - 90M Revs (C90) 2 N/A 30700 lbf137000 N
Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row)3 N/A 53500 lbf238000 N
e Factor 4 N/A 0.41
K Factor 5 N/A 1.44

Other Dimensions

Weight

 N/A 23.66 Kg52.19 lb

Outer Ring Width (C)

 N/A 3.25 in82.55 mm
Max Shaft Fillet Radius6 N/A 0.25 in6.4 mm
Max Housing Fillet Radius7 N/A 0.030 in0.800 mm

Shaft Backing Shoulder Dia. - Backface (db)

 N/A 10.39 in264 mm

Housing Backing Shoulder Dia. - Frontface (Da)

 N/A 12.40 in314.96 mm

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)8 N/A 21400 lbf95200 N

Factors

Y1 Factor 9 N/A 1.66
Y2 Factor 10 N/A 2.47
  • 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.