Aerotech’s ADR series direct-drive rotary stages provide
superior angular positioning and velocity control. Applications
include photonic component alignment, highspeed laser machining,
and precision wafer inspection.
Superior Mechanical Design
Angular contact bearings are used to maximize performance with
respect to wobble, moment stiffness, and rotating friction. A
thick-walled, precision-ground shaft further minimizes wobble.
Brushless Direct-Drive
To maximize positioning performance, the ADR series utilizes Aerotech’s
S-series brushless, slotless motor. 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.
Since it is a slotless, ironless design, there is zero cogging,
meaning that there is absolutely no torque ripple. This makes
the ADR ideal for applications requiring outstanding contoured
motion, smooth scan velocity, or precise incremental steps.
With its low inherent inertia and high power output, the ADR is
capable of speeds and accelerations that are an order of magnitude
greater than typical direct-drive devices or worm-driven stages.
The low inertia and zero backlash make the ADR the ideal solution
for applications requiring frequent directional changes.
Accurate Positioning
Performance is assured with a 5920 lines per revolution encoder
that results in 0.11 arc sec resolution. 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. As a result, accuracy
of ±5 arc sec is attainable.
Flexible Configurations
Options include thru-hole apertures and metric or English tabletops.
Aerotech manufactures a wide range of servo amplifiers and advanced
controllers to provide a complete, integrated package.
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