ABTech’s precision air-bearing rotary tables address the metrology needs for different weights and part sizes. Built for the most demanding applications, every table provides ultra-smooth motion, sub-micron accuracy, and absolute repeatability. They are designed and manufactured in-house to extremely tight geometric tolerances and have no mechanical contacting parts to wear or create drag. This allows for decades of reliable maintenance-free motion.

ABTech’s AT models come standard with dual-element filters/regulators and are commonly used as the core axis in equipment checking total indicator reading (TIR), roundness, flatness, squareness, perpendicularity, concentricity, and parallelism measurements. To speed up part setup and increase productivity, the AT model tables also come standard with our industry-best adjustable tilt and center (tip/tilt) worktables. 

Overall, the AT models are ideal as stand-alone units for checking runout of turned parts, optical lens alignment, assembly applications, precision indexing, and light machining or grinding.

The heavy-duty HDRT tables complete the product family. The tilt and center are optionally available for these models. And these HRT tables are a perfect solution for large part applications.

    • Features & Benefits

    Accurate, Repeatable, Smooth Motion

    Manufactured with tight geometric tolerances, our air bearings 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 have no mechanical contacting parts to wear, or create drag. They are close to frictionless, providing ultra-smooth, repeatable and maintenance-free motion.

    Superior Durability
    Configuration Flexibility to Meet Your Specific Needs

    Technical Details

    Air-Bearing Rotary Tables We Offer

    All AT Series HDRT Series Custom
    AT Series – Rotary Air Bearing Table
    AT300 Rotary Air Bearing
    HDRT Series – Rotary Air Bearing Table
    HDRT 3000
    Custom Large Clear Aperture
    Custom Grind Table
    Custom 17" Clear Aperture Air Bearing
    AT100
    AT 200 Direct Drive 1.25arcsec accuracy
    AT 100 Foot Mount
    AT 200 with variable speed motor, friction clutch and onboard DRO
    AT 200 Direct Drive with/ TC8
    AT 200 Wet Grind Tableaccuracy

    Air-Bearing Rotary Table Specifications

      AT150 AT200 AT300 AT400 HDRT500 HDRT600
    Certified Accuracy
    Radial & Axial <2.0 µ” (0.05 µm) <10.0 µ” (0.250 µm)
    Tilt (Coning) <0.206 arc sec or 1.0µ”/in (0.025 µm/25mm)
    Working Envelope
    Maximum Part Diameter
    (swing)    		 12”
    305 mm    		 16"
    406 mm    		 24"
    610 mm    		 32"
    813 mm    		 40"
    1.0 m    		 48"
    1.2 m
    Axial Load Capacity 300 lbs
    136 Kg    		 500 lbs
    226 Kg    		 1,200 lbs
    544 Kg    		 2,000 lbs
    907 Kg    		 3,000 lbs
    1,361 Kg    		 5,000 lbs
    2,268 Kg
    Worktable Diameter 6"
    152 mm    		 8”
    203 mm    		 12″
    305 mm    		 16″
    406 mm    		 20”
    508 mm    		 24”
    610 mm
    Tapped holes 1/4 -28 UNF
    Worktable Configuration
    Tilt and Center 4-knob spherical seat 8-knob spherical seat n/a
    Knob Configuration 2 centering, 2 leveling at 90⁰ 4 centering , 4 leveling at 90⁰ n/a
    Air Consumption 2.0 cfm @ 60 psi with dual stage filter/regulator 4.0 cfm @ 60 psi with dual stage filter/regulator
    Product Dimension 9.25" OD x 5.50" T
    235 x 140 mm    		 12.63" OD x 7.25" T
    321 x 184 mm    		 17.25" OD x 8.50" T
    438 x 216 mm    		 19.00" OD x 8.00" T
    483 x 203 mm    		 22.00" OD x 3.40" T
    560 x 86 mm    		 26.00" OD x 3.50" T
    660 x 89 mm
    Product Weight 50 lbs
    23 kg    		 100 lbs
    45 kg    		 240 lbs
    110 kg    		 450 lbs
    200 kg    		 220 lbs
    100 kg    		 300 lbs
    140 kg

    Motor Drive Options

    With proper selection and integration of high-performance brushless DC servo motors ABTech’s air bearing rotary tables provide ultra-smooth and precise rotary motion. With high torque, high performance motor drives, our motion experts will gather your specific requirements and work closely with our motor suppliers to create/select a motor drive that suits your specific application. Whether you need sub-micron position accuracy with minimal settle time and stringent following error specifications, high-speed constant motion, or a combination of both there is an ABTech rotary table that will meet your needs.

    The motor drives are designed to accommodate a wide range of precision motion applications such as optical metrology; circular geometry gages; and micro machining with ultra-precision scanning, velocity control, speed regulation and precision indexing.

    ABTech’s modular design approach facilitates multiple system configurations to optimize the price-for-performance required in your application. This approach allows the user to define the level of control desired for the most cost-effective solution. Our complete engineering services allow us to respond quickly to provide a solution to your O.E.M. requirements for ultra-precision rotary motion.

      See What Our Customers are Saying

      “Thanks a lot for your help [with remote technical support provided for the system installed at the South Pole]. Your rapid, informative correspondence was invaluable. Hopefully I won't be bothering you with any further questions, but it's good to know you're willing.” 

      Morgan Hedges

      Post-Doctoral Research Associate, Princeton University

      See What Our Customers are Saying

      "We use 2 ABTech air-bearing spindles with tip/tilt and centering capability in our facility. These units are used for precision assembly and final metrology. We have never had an issue with either one, and the ABTech team is a great partner for us. We will be adding more systems as our young organization continues to grow".

      Jayson Tierson

      President, Vertex Optics

      See What Our Customers are Saying

      “Thanks a lot for your help [with remote technical support provided for the system installed at the South Pole]. Your rapid, informative correspondence was invaluable. Hopefully I won't be bothering you with any further questions, but it's good to know you're willing.” 

      Morgan Hedges

      Post-Doctoral Research Associate, Princeton University

      See What Our Customers are Saying

      "We use 2 ABTech air-bearing spindles with tip/tilt and centering capability in our facility. These units are used for precision assembly and final metrology. We have never had an issue with either one, and the ABTech team is a great partner for us. We will be adding more systems as our young organization continues to grow".

      Jayson Tierson

      President, Vertex Optics

    Benefits and Advantages

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    Made in the U.S.A of U.S. and imported parts

    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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    made in the USA

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    126 Route 12 North
    Fitzwilliam, New Hampshire 03447
    (603) 585-7106
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