o High torque output, direct-drive
brushless servomotor
o Cog-free design for outstanding velocity stability
o Outstanding wobble and runout
o Direct coupled, high-accuracy rotary encoder
o Large diameter clear aperture
Aerotech's new ADRT Series Direct-Drive
Rotary Stage provides superior angular positioning and velocity
control. Applications range from indexing to high-speed laser
machining to precision wafer inspection.
Brushless Direct-Drive
The ADRT Series uses a slotless,
ironless design to give ultra-smooth performance and ease of tuning
when compared to competitive iron core and variable-reluctance
motor designs. This motor has all the advantages of a brushless
direct-drive motor - no brushes to wear, no gear trains to maintain,
and high acceleration and high speeds. The ADRT is capable of
speeds and accelerations that are significantly higher than other
competing products. Low inertia and zero backlash make the ADRT
the ideal solution for applications requiring frequent directional
changes. When coupled with Aerotech's MXH series resolution multipliers,
resolution can be as fine as 0.12 arc sec. The motor and high-performance
rotary encoder are directly coupled to a common shaft. The absence
of gear trains and mechanical couplings means no position errors
caused by hysteresis, windup, or backlash.
Superior Mechanical Design and
Flexible Configurations
Dual large diameter bearings maximize
performance with respect to wobble, moment stiffness, and repeatability,
while integral "T-slots" ease integration of custom
fixtures and instrumentation. The square package design coupled
with the integral T slots permit horizontal mounting without custom
brackets. Competitive products require additional mounting plates
for top down mounting or special base considerations due to bottom
exiting of motor power and feedback cables. The ADRT has an integral
mounting flange for easy top-down mounting and side-exit cables.
In addition, Aerotech manufactures a wide range of servo amplifiers
and advanced controllers to provide a complete integrated positioning
package.
Slip rings and rotary unions are
available to ease integration of custom tooling, and a holding
brake is available to limit movement of the stage during large
impulse loads or when power is removed from the motor.
To learn more about the NDrive, please
contact Ron Rekowski at Aerotech, Inc., 101 Zeta Drive, Pittsburgh,
PA 15238, (Phone) 412-963-7470, (Fax) 412-963-7459, sales@aerotech.com.
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