Aerotech’s ABS series direct-drive air-bearing spindles
were designed to provide superior angular positioning and velocity
control for applications including data storage, wafer processing,
diamond turning, and imaging.
Superior Mechanical Design
The ABS2000 utilizes a precision ground air-bearing to provide
exceptional rotational accuracy with an extremely high stiffness.
This design allows for a large load capacity and superior performance
over a wide range of operation speeds. The ABS2000 is balanced
to ISO 1940 G 0.4 tolerances.
Low Loss, Non-Influencing Direct-Drive Motor
Aerotech’s custom designed, low-loss motor produces >0.25
N-m (38 oz-in) of continuous torque with negligible motor losses,
eliminating the need for cooling fins and/or external cooling.
The non-influencing motor design minimizes parasitic forces in
the motor, providing the exceptionally high level of error motion
performance. These motors have all the advantages of a brushless
direct drive motor — no brushes to wear, and high acceleration
and high speeds.
Accurate Positioning
With a velocity ripple of <0.1%, an asynchronous error motion
=20 nm, and total error motion <100 nm, the Aerotech spindle
offers superior performance for high accuracy applications. The
high performance motor and rotary encoder are directly coupled
to a common shaft. When used with the Aerotech A3200
controller and Npaq®
drive rack the spindle resolution can be as high as 0.05 arc
sec with no speed trade-offs. This makes the spindle ideal for
applications requiring both spindle operation and stage operation.
Flexible Configurations
A variety of encoder resolutions, as well as an optional rotary
union for a vacuum supply, are available. Other options include
mechanical or vacuum chuck configurations, grounding ball, and
optics mounting. Alternative higher torque motors are available.
Aerotech manufactures a wide range of servo
amplifiers and advanced controllers
to provide a complete, integrated motion package.
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