Manual Air Bearing Tables

Standard Rotary Air Bearing (AT) Series

ABTech's AT series rotary air bearings are manually driven "spin tables" (direct drive servo motors are available) and feature sub-micron accuracies with ultra-smooth motion; absolute repeatability; high load capacities and stiffness.

Constructed of precision machined, hardened stainless steel materials for years of maintenance-free durable service (lighter weight hard coated aluminum construction is also available). Each air bearing has a clear thru-hole for cable access, vacuum feed or directing laser light for lens axis alignment. 

Standard AT series rotary air bearing tables are available in 4", 6", 8", 10", 12" and 16" with optional worktables up to 24" in diameter. Custom sizes and configurations are available.

General Specifications:

Precision machined and assembled parallel plates for tight gaps support bearing on thin air film

High load capacity and stiffness

Ultra-smooth vibration free motion

Extremely durable design 

Hardened stainless steel construction

Maintenence free (no mechanical contact parts which would require lubircation)

Uses readily available clean and dry compressed "shop" air

Radial and axial accuracies to 1.0 µ" (0.025 µm)

Angular accuracy to 0.5 µ" (0.00127 µm)

Position accuracy to 1.0 arc second

Essentially absolute repeatability

Request information on AT Series
Download a printable datasheet

Options and Accessories:

• Adjustable tilt and center (tip-tilt) worktables
• Standard base mount, foot or flange mount options
• Vacuum part holding feed through center aperture
• 3-jaw chucks and collets
• DC servo direct motor drives
• High resolution encoders and amplifiers
• Large custom sized clear apertures
• Custom fixturing and work holder tooling
• Custom bolt hole patterns
• Dual element air supply filter/regulators
• Granite surface plates & support stands
• Inspection and tool-room style gage stands
• Combine with linear stages for multi-axis motion