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Aerotech’s APR mechanical bearing series is suitable for precise rotary positioning in applications such as precision component testing, optical calibration systems, laser micromachining, sub-micron metrology, slip ring assemblies, laser feeds and air supplies.

The units feature an accuracy of up to 1.5 arc-sec and an axial load capacity up to 450kg.

Within the range there are seven models in three frame sizes with nominal square footprint mounting dimensions of 150, 200 and 260mm, and a clear through-aperture of 50, 75, or 100mm respectively.

The series also features a cog-free, direct-drive, brushless servo motor that has rapid acceleration and a maximum speed of up to 800rpm at the smaller stage.

Key product features

  • Manufactured from anodised aluminium with a hardcoat finish
  • Can be used where centre of rotation is either parallel or perpendicular to gravity
  • Total tilt error motion of two arc-sec
  • Total axial and radial error motion of 1.5 microns
  • Resolution to 0.04 arc-sec
  • Bi-directional repeatability to 0.75 arc-sec in certain models
  • Standard and calibrated accuracy options
  • Incremental or absolute encoders
  • Direct-drive motor ratings are available to suit differing load, torque and speed requirements
  • APR units can be supplied for continuous rotation or fitted with limit switches for part rotation from 10–270°
  • Brakes and adjustable mechanical hard stops optional
  • Optional tabletop features a series of threaded holes for customer workpiece interfacing
  • Single- or multi-axis motion control options include PC based software-only or hardware-based rack- or desk-mount packages
  • Programming options include RS-274 G-code, Aerobasic, IEC61131-3, Microsoft .net framework and Labview


Aerotech — manufacturer of high-precision motion control components and systems

Aerotech — manufacturer of high-precision motion control components and systems

Aerotech manufactures the highest-performance motion control components and systems for our customers in industry, government, science and research institutions around the world. Our products include automated nanopositioners; planar and rotary air-bearing stages; high-speed gantries; mechanical-bearing linear, rotary and lift stages; brushless linear and rotary servomotors and drives; standalone and software-based motion controllers; goniometers; and gimbals/optical mounts. Custom, vacuum-prepped and cleanroom-ready positioning systems and components are available. Aerotech’s precision motion control products provide the critical performance for demanding applications in markets including medical devices and life sciences, semiconductors and flat panels, photonics, automotive, data storage, laser processing, military and aerospace, electronic manufacturing and test, assembly, research and development and others requiring high-precision, high-throughput motion solutions.

Motion controls, drives and motors

From our award-winning Automation 3200 32-axis machine controller to our Soloist series single-axis and Ensemble series multi-axis standalone motion controllers, Aerotech provides a controller solution to fit almost any need. Aerotech complements our controllers with our large selection of high-performance brushless linear and rotary servomotors and PWM and linear drives.

Linear and rotary stages, nanopositioners and gantries

Aerotech positioning stages range from economical ballscrew and gear-driven linear and rotary stages to the highest-performance direct-drive linear and rotary stages available, linear-motor-based Cartesian gantry systems, single- and multi-axis air-bearing systems and our complete range of ANT series long-travel nanopositioners.

Custom, vacuum and cleanroom-ready motion systems

If you don’t find a standard product suitable for your application, our expertise and ability to provide custom motion components and systems is unmatched. Our custom manufacturing capability is further augmented by our long history of providing systems for vacuum and cleanroom operation.

Since 1970, Aerotech has been committed to supporting our customers worldwide. We maintain a growing number of direct field sales and engineering offices throughout the US, as well as representatives across the globe. We also operate full sales and service facilities in the UK, Germany, Japan, Taiwan and China.

We’d be happy to assist you with your motion control application. Please use the contact information below to enquire about our services.

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