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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Key Features

  • Available in single, double and multi-row configurations, as well as proprietary sizes
  • Designed in collaboration with OE engineers to design, engineer and test bearings for premium performance in many applications
  • Power dense designs allow for heavier loads and can help extend bearing life
  • Optimized internal geometry lower torque and operating temperatures to extend lubrication system life
  • Can be designed to withstand high-corrosive, high-temperature and vacuum or low-lubrication environments with proprietary enhancements
Unit of Measure

Key Dimensions

Cone Part Number

 N/A NA8575SW

Cup Part Number

 N/A 8520CD

Bore (d)

 N/A 9.25 in234.95 mm

O.D. (D)

 N/A 12.875 in327.025 mm

Width (T)

 N/A 4.625 in117.475 mm
Dynamic Radial Load Rating - 90M Revs (C90) 1 N/A 30700 lbf137000 N
e Factor 2 N/A 0.41
K Factor 3 N/A 1.44

Series

 N/A 8500

Other Dimensions

Outer Ring Width (C)

 N/A 3.25 in82.55 mm
Max Shaft Fillet Radius4 N/A 0.25 in6.35 mm
Max Housing Fillet Radius5 N/A 0.06 in1.5 mm

Shaft Backing Shoulder Diameter - Backface (db)

 N/A 10.2 in259 mm

Housing Backing Shoulder Diameter - Frontface (Da)

 N/A 12.29 in311.91 mm

Cage Location Relative to Backface (Aa)

 N/A 0.31 in7.9 mm
Effective Center Location6 N/A 0.24 in6.1 mm

Inner Ring Width (B)

 N/A 2.3125 in58.738 mm

Weight

 N/A 58.37 lb

Ratings

Dynamic Axial Rating - 90M Revs (Ca90)7 N/A 21400 lbf95200 N

Factors

Y1 Factor 8 N/A 1.66
Y2 Factor 9 N/A 2.47
  • 1 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 2 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 4 These maximum fillet radii will be cleared by the bearing corners.
  • 5 These maximum fillet radii will be cleared by the bearing corners.
  • 6 Negative value indicates effective center inside cone backface.
  • 7 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.
  • 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.