Rotary Air Bearings & Air Bearing Tables

PI Nelson Air has developed an extensive catalog of rotary air bearings and air bearing tables for diverse applications such as optical grinding, roundness checking, disk drive inspection, semiconductor processing, torque testing, and many others. In addition to offering a line of standard air bearing tables, we can provide individually customized bearings for each application. When you call us with your rotary bearing application, we will quickly adapt one of our many existing designs to fit the exact requirements.

Standard Rotary Air Bearing Product Lines


  • TIR ±1 millionths of an inch
  • Flatness of Rotation ±5 millionths (±2 available)
  • Inherently Frictionless/Stictionless
  • Stiffness from 50,000 lbs/in to 4,000,000 lbs/in
  • Load capacity from 1 lb to 1100 lbs
  • Operating pressure from 15 psi to 90 psi
  • Can be balanced for high speed operation
  • Material: Hardcoat Aluminum, Stainless Steel and others available


  • Clear Apertures
  • Mounting Hardware
  • Tip/Tilt/Centration Tables
  • Custom Fixturing
  • Air Tubing and Fittings
  • Air Handling Assemblies (filter, dryer, regulator)
  • Granite Bases
  • and Many More...


  • Positioning
  • Scanning
  • Metrology
  • Force Measurement
  • Inspection
  • Calibration
  • Clean Rooms