Slewing Rings

NPB stocks slewing rings from the The Silverthin™ Bearing Group, an ISO 9001: 2008 registered company that specializes in thin section ball and slewing ring bearings. Silverthin's flexible manufacturing systems and long term agreements with NPB allow us to provide a wide variety of custom bearing configurations across a broad range of sizes.
SilverThin Slewing Ring Turntable Bearings

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

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

THE SILVERTHIN™ ADVANTAGE:

  • 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

Flanged

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  • Four-point Contact Ball
  • Flanged cross-section on non-geared rings
  • Internal, external and non-gear
  • Clearance and preload

*Dimensions up to 60" OD

Available Capacities up to:
Moment - 141,000 ft-lbs to
180,000 ft-lb
Thrust - 175,000 ft-lbs to
223,000 ft-lbs
Radial - 35,000 lbs to
45,000 lbs
APPLICATIONS:
Small cranes
Industrial positioners
Rotary tables
Rotating displays
Bottling machines
Conveyors

Rectangular

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  • Four-point Contact Ball
  • Rectangular cross-section
  • External and non-gear
  • Clearance and preload

*Dimensions up to 72" OD

Available Capacities up to:
Moment - 900,000 ft-lbs to
980,000 ft-lbs
Thrust - 1,150,000 ft-lbs to
1,380,000 ft-lbs
Radial - 250,000 lbs to
250,000 lbs
APPLICATIONS:
Cranes & Manipulators
Aerial lifts
Wind turbines
Position/Index tables
Radar & Satellite antennas
Robots
Medical equipment

Rectangular High Capacity

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  • Four-point Contact Ball
  • Wide range of diameters and various cross-sections
  • Internal, external and non-gear
  • Clearance and preload

*Dimensions up to 240" OD

Available Capacities up to:
Moment - 10,000,000 ft-lbs
Thrust - 6,000,000 lbs
Radial - 1,300,000 lbs
APPLICATIONS:
Cranes
Aerial lifts
Excavators
Wind turbines
Utility derricks
Log loaders & Fellers
Feller Heads

Rectangular Cross Roller

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  • Single row of rollers having alternating orientation
  • Greater stiffness and dynamic capacity than a four-point contact bearing
  • Internal, external and non-gear
  • Clearance and preload

*Dimensions up to 240" OD

Available Capacities up to:
Moment - 7,000,000 ft-lbs
Thrust - 3,000,000 lbs
Radial - 1,400,000 lbs
APPLICATIONS:
Radar & Satellite antennas
Turrets
Machine tools
Excavators

* For larger diameters and alternate bearing designs please contact Silverthin™ sales.

Contact the Thin Section Bearings Product Group

For additional information, go to www.silverthin.com