AT Series Air Bearing Rotary Motion Tables
AT Series Air Bearing Rotary Motion Tables
“the air table is working flawlessly” (at the South Pole!)
Marc Smiciklas
Post Doctoral Research Associate
Princeton University
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AT200 (8″ Ø)

Rotary Motion Air Bearing Table

(Max Part Swing: 16″, Max Part and Fixture Weight: 500 lbs)

Our air bearing rotary tables provide ultra-smooth motion, sub-micron accuracy and absolute repeatability for the most demanding applications. Designed and built in-house to extremely tight geometric tolerances, air bearings have no mechanical contacting parts to wear or create drag. The benefit is they are ready to deliver decades of reliable maintenance-free motion.

The AT Series is commonly used as the core axis in equipment checking runout (TIR), roundness, squareness, concentricity and parallelism measurements. They are ideal as stand-alone units for checking runout of turned parts, optical lens alignment, assembly applications, precision indexing, and light machining or grinding. Industries such as aviation, aerospace, automotive, energy, optics and medical devices have deployed our air bearings to meet their ultra-precision measurement demands.

We understand that often your metrology needs require operating in harsher environments. That’s why we use the most durable hardened stainless steel air bearing components that afford forgiveness from minor accidental touch downs as a result of low air pressure, excessive loading, or operator error.

Meeting your specific needs by providing configuration flexibility is integral to our design philosophy. You can choose our standard manual spin tables or opt for a motor-driven table.

All our AT Series tables come standard with adjustable tilt and center (tip/tilt) worktables and dual element filter/regulators. They can be customized with a variety of options and accessories including vacuum worktables, motor drives, high-resolution optical encoders, digital readout (DRO) displays, inspection-grade granite surface plates and gage stands. (See options and accessories for a complete list.)

If our standard tables don’t fit your application, our precision motion experts can work closely with you to configure a rotary motion solution that will meet your exact needs, including developing custom solutions for the most unique applications.

Features & Benefits

 

Accurate, Repeatable, Smooth Motion

Manufactured with tight geometric tolerances, our standard air bearings deliver radial and axial error motion of <2.0 µ” (50.0 nanometers) and angular errors (coning) of 1.0 µ” per inch (25.0 nanometers/25mm). And custom configurations can deliver the ultimate in accuracy with radial and axial error motion of as little as 1.0 µ” (25.0 nanometers) and angular errors (coning) of 0.5 µ” per inch (12.5 nanometers/25mm).

Air bearings provide significant advantages over mechanical bearings or other approaches to precision worktables. Because they have no mechanical contacting parts to wear, or create drag, air bearings are close to frictionless, providing ultra-smooth, repeatable and maintenance-free motion.

Superior Durability

Metrology is no longer relegated to the quality control lab. To maximize productivity, we know that many of your applications require integrating measurement devices within the production and assembly processes. That means being exposed to harsher environments. That’s why we use hardened 440C stainless steel components – so you’ll experience many years of service and investment longevity. As important, the durability of our tables affords forgiveness for minor accidental touch downs resulting from low air pressure or excessive loading. And if an accident does occur, often the air bearing will only need to be repaired rather than completely replaced.

Configuration Flexibility to Meet Your Specific Needs

Part of our “Pride in Precision” philosophy means providing you with precisely the solution you need. We don’t believe in selling our customers more, or less, than what their application calls for. With almost two decades of listening to our customers we’ve been able to develop a broad range of options and accessories to address the majority of ultra-precision measurement applications. (See options and accessories for a complete list.)

But no matter how broad our product options may be, we realize that they can’t address every possible application. And that’s what separates ABTech from most other metrology suppliers. We won’t say sorry, best of luck. Rather, we’ll connect you with one of our precision motion experts and work closely with you to configure a rotary motion solution that will meet your exact needs, including developing custom solutions for the most unique applications.

Specifications:

 

Working envelope:

  • Max part diameter: 16” (406 mm)
  • Axial load capacity (max centered and balanced): 500 lbs (226 Kg)*

Certified accuracy:

  • Radial & Axial accuracy: <2.0 µ” (0.05 µm)
  • Tilt accuracy: <0.206 arc sec or 1.0µ”/in (0.025 µm/25mm)

Specifications:

  • 440C hardened stainless steel air bearing components
  • Spherical seat type tilt and center worktable assembly (Model TC8)
    • 8” (203 mm) diameter worktable
    • Concentric ″V” grooves in worktable equally spaced for rough centering
    • 1/4 -28 UNF tapped holes in worktable
    • Spherical seat type design
    • Eight fine pitch screw type opposing knobs (4 centering, 4 leveling at 90⁰) for precise tilt and center adjustments
  • Air consumption: 2.0 cfm @ 60 psi
  • Standard portable base with base adapter plate and three jig feet
  • Filter Regulator Assembly (Model 00787A)
    • 5.0 micron pre-filter w/ regulator (0 – 150 PSI)
    • 0.5 micron second stage filter, oil/water removing (coalescing)

All specifications based on vertical axis orientation at 60 psi and are subject to change without notice.

Options

  • Motor drives and controls
  • Encoders and digital readouts (DRO)
  • Vacuum worktable and controller to hold sensitive lightweight parts safely and securely
  • Custom bolt circle patterns
  • Standard and custom sized clear apertures

Accessories

  • ABTech Precision Centering Fixtures
  • Custom fixturing and work holder tooling
  • Gage stands
  • MicroTIR electronic gage packages
    • µTIR-10: display with single lever-type electronic indicator
    • µTIR-11: display with single lever-type electronic indicator and encoder interface
    • µTIR-20: display with dual lever-type electronic indicators
    • µTIR-21: display with dual lever-type electronic indicators and encoder interface
  • Granite surface plates
  • Structural steel frames with passive vibration isolation leveling feet
  • Certified 2µ” round master test ball and cover

Applications

  • Aerospace
  • Aviation
  • Automotive
  • Energy (gas, oil, wind)
  • Precision optics
  • Medical
  • Bearings
  • Semiconductor

Similar Products:

    AT150 (6″ Ø)
    AT300 (12″ Ø)
    AT400 (16″ Ø)

GET A QUOTE TODAY

Thank you for your interest in ABTech’s ultra-precision measurement tools and services.
Please tell us a little about what you need to accomplish and we will be in touch to discuss any of the additional details that will help you choose your best option.

I just got back from the South Pole last week. Everything there went well. The experiment is now up and running, and the air table is working flawlessly! Marc SmiciklasPost Doctoral Research Associate
Princeton University
Made in the U.S.A.

Every product we sell exemplifies our company-wide commitment to "Pride in Precision" craftsmanship. To that end, all of our products are designed, manufactured, and tested exclusively by ABTech at our New Hampshire facility.

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