RT Series Rotary Air Bearings

These rotary air bearings are designed for accuracy, precision and ease of use. They can be used in any orientation and are easy in integrate with motors and encoders for complete positioning solutions. We use them with simple o-ring belt drives for ultra-precision grinding and inspection in house. Please download a datasheet for more information.


  • Table Diameters from 50mm to 300mm
  • 490kg Max Payload
  • Radial/Axial Error Motion < 200nm
  • Can be Mounted Vertically or Horizontally
  • Optional Encoder Available for Position Feedback
  • Optional Tip/Tilt Tabletops
  • Mounting Bases and Flanges Available

Key Specifications

Note: Capacities listed assume supply pressure of 80 psi. Please contact PI if alternate pressures are required.

Rotary Air Bearings Overview