ABRT0 pages
ABRT Series
Rotary Stages
Air-Bearing Rotary Stage
High torque output, direct-drive, slotless,
brushless servomotor
ABRT Series
Zero cogging motor for outstanding velocity
stability
Outstanding error motion and wobble
performance
Direct coupled, high-accuracy rotary encoder
Large diameter clear aperture
No mechanical contact
Aerotech’s ABRT series rotary air-bearing stages provide
superior angular positioning, velocity stability, and error
motion performance along with impressive payload
capacity and outstanding radial and axial stiffness. The
ABRT is designed to meet the exacting requirements of
DVD mastering, wafer inspection, high precision metrology
applications, X-ray diffraction systems, optical inspection
and fabrication, and MEMS/nanotechnology device
fabrication.
cogging and torque-ripple-free. This makes ABRT stages
ideal for applications requiring smooth scan velocities at
low or high speeds.
Accurate Positioning
An optical encoder is standard with the ABRT. When
coupled with Aerotech’s feedback multipliers and controls,
resolutions of <0.03 arc second are achievable.
Custom Designs
Superior Mechanical Design
The ABRT design features large air-bearing surfaces and
innovative preloading for high stiffness and load capacity,
producing not only excellent axial and radial error motions,
but outstanding tilt error motion, as well. The resultant
performance is significantly better than other rotary airbearing tables and spindles, greatly benefiting applications
requiring exceptional planar performance. Furthermore, this
stage family provides a clear aperture that can be used for
product feed-through, laser beam delivery, cable clearance,
or application-specific requirements.
Custom versions of the ABRT are available to satisfy rate
table and high precision inertial guidance test-stand
applications. Other features, such as slip rings and rotary
unions, are available.
Flexible Configurations
Aerotech manufactures a wide range of servo amplifiers
and advanced controllers to provide a complete, integrated
package.
Brushless Direct-Drive
To maximize positioning performance, the ABRT series
utilizes optimized versions of Aerotech’s S-series slotless,
brushless motor. The motor uses an advanced magnetic
circuit design to produce high torque output with minimal
heat generation. The slotless design is inherently zero-
www.aerotech.com
WORLD HEADQUARTERS: Aerotech, Inc., United States • Phone: +1-412-963-7470 • Email: sales@aerotech.com
Aerotech, Ltd., United Kingdom • Phone: +44-118-9409400 • Email: sales@aerotech.co.uk
Aerotech GmbH, Germany • Phone: +49-911-9679370 • Email: sales@aerotechgmbh.de
Aerotech KK, Japan • Phone: +81-47-489-1741 • Email: sales@aerotechkk.co.jp
Aerotech China • Phone: +852-3793-3488 • Email: saleschina@aerotech.com
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