Self-Lubricating PRT Slewing Rings

March 12, 2008
Slewing ring bearings from igus use two self-lubricating, low-friction polymer sliding elements for low-noise, maintenance-free operation.

Slewing ring bearings use two self-lubricating, low-friction polymer sliding elements in place of ball bearings. The low-noise PRT modules are highly wear-resistant, easy to install, and completely maintenance-free.


The slewing rings have a very high load capacity, aluminum housings, and use stainless steel screws. The polymer sliding elements are made from iglide J, which contains a solid lubricant so it doesn't require additional lubrication. This material also has a low coefficient of friction, chemical resistance, low moisture absorption, and vibration-dampening properties.


iglide PRT slewing ring bearings are suitable for all environments; in particular, semiconductor and cleanroom applications, assembly lines, production facilities, and robotics. Units are available with outside diameters of 1.2, 2.4, 4, and 8 in. (30, 60, 100, and 200 mm).

  • Self-lubricating
  • Maintenance-free
  • Low friction
  • Low cost
  • Sturdy
  • High rigidity
  • Easy installation
  • High wear resistance
  • High load capacity
  • Very slim design and hygienic