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.
- Low-loss brushless servomotor
- Instrument-grade precision
- Noncontact air-breaing
- Balanced to ISO1940 G 0.4
- Sub-arc second resolution at high speed
- Custom configurations available
- Ideally suited for data storage, wafer processing, diamond turning and imaging
Superior Mechanical Design
The ABS2000 utilises 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 minimises 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.
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.
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.