Mechanical-Bearing Rotary Table

Mechanical-Bearing Rotary Tables

ABTech’s line of precision mechanical rotary tables address the motion needs for a full range of part sizes and weights. High precision angular contact bearings are incorporated into stages that are designed and manufactured in-house to extremely tight geometric tolerances. The result is superior performance in radial, axial, and angular (tilt/coning) error motions.

Mechanical rotary tables are used in a wide range of applications and are ideal as stand-alone units and/or multi-axis assemblies, cylindrical part staging, TIR Inspection, for assembly and alignment tools, position measurements, optical scanning, light machining and grinding, and more.


Precision motion comes in many forms and applications, each with its own set of pertinent specifications. Diversity in today’s applications creates unique requirements, we provide configuration flexibility as an integral part of our design philosophy. All rotary tables can be customized with a variety of options and accessories. This includes motor drives, vacuum worktables, high-resolution optical encoders, digital readout (DRO) displays, inspection-grade granite surface plates, and more.

In addition to the options and accessories, material selection is a key focus of our applications engineers. For harsher environments, best accuracy, precision, and stability we use 440 hardened stainless-steel components. Focused on cost, ABTech will utilize the efficiencies of hard-coated aluminum construction. Our precision motion experts will work closely with you to configure a rotary motion solution that will meet your exact needs.

Features & Benefits

  • Superior Mechanical Motion

    ABTech mechanical stages are superior in performance and quality. The key to high-performance rotary tables is in the geometry and quality of the mating components. By leveraging our knowledge and experience gained in producing the extreme tolerances required for air bearings, ABTech mechanical bearings achieve radial and axial error motion of < +/-25.0 µ” (+/-.63 micron).

  • Configuration Flexibility to Meet Your Specific Needs

    Part of our “Pride in Precision” philosophy means providing you with the precise solution needed. We don’t believe in selling our customers more, or less than what their application calls for. No matter how broad our product options are, we realize they don’t address every possible application. Our precision motion experts will work closely with you to configure a rotary motion solution that will meet your exact needs.

  • Specifications:

    Standard portable base with base adapter plate and three jig feet

    Tilt & Center Options
      • 4-knob spherical seat = Four fine pitch screw type spring-loaded knobs (2 centering, 2 leveling at 90⁰) for precise tilt and center adjustments
      • 8 knob spherical seat = Eight fine pitch screw type spring-loaded knobs (4 centering, 4 leveling at 90⁰) for precise tilt and center adjustments
    Drive Options
       • Manual turn (standard)
       • Direct drive – High torque brushless DC servo motor with variable speed control
    Mounting Options
       • Base (standard)
       • Foot
       • Flange

Land & Marine


  • 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 size clear apertures


  • 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

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.


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.

Thanks a lot for your help. 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. (following remote technical support provided for system installed at the South Pole) Morgan HedgesPost-doctoral Research Associate
Princeton University
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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