Ball Bearings from National Precision Bearing, Inc.

No Gear Slewing Ring -- STO Series

No Gear Slewing Ring -- STO Series -- View Larger Image
No Gear Slewing Ring -- STO Series-Image

The Silverthin™ Bearing Group is an ISO 9001: 2008 registeredcompany that specializes in thin section ball and slewing ring bearings.

Our flexible manufacturing systems allow us to provide a wide varietyof custom bearing configurations across a broad range of sizes.


  • Experienced customer service representatives that provide fast, reliable, and friendly customer service
  • Flexible manufacturing and inventory management systems that offer industry best lead times
  • Products including modified standards or custom designs to meet specific application needs
No Gear Slewing Ring

  • Four-point contact ball
  • Rectangular cross-section
  • Non-gear
  • Clearance
  • Dimensions up to 72” OD