Aerotech's new ABRT series rotary stages combine air bearings, direct-drive servo technology and ultra-high-precision angle encoders to provide exceptional performance.
Available in three models with nominal tabletop diameters of 100, 150 and 200mm, they provide up to 70kg load capacity with bidirectional repeatability of less than 1 arc-sec and calibrated angular accuracy to ±2 arc-sec.
The ABRT series stages feature large-area air-bearing surfaces that are preloaded to ensure maximum stiffness, high load capacity and extremely low axial, radial and tilt motion errors. Aerotech's high-torque S-series direct-drive brushless and slotless servo motors are directly coupled to the precision encoder feedback system, providing exceptionally smooth and backlash-free motion with excellent in-position stability.With their entirely non-contact design, the stages benefit from an extremely long life and almost no maintenance required.
Each of the three stage designs includes a through-hole that provides a clear aperture for laser beam delivery, product feed-through or other application-specific requirements. Manufactured from aluminium, black anodised and with a hardcoat finish for extra durability, the ABRT series includes an assortment of mounting holes, T slots and a connector block for motor power and feedback connectors. Custom-engineered modifications can include adaptation for rate table and inertial navigation test stands with slip rings, pneumatic and hydraulic unions built-in.
The ABRT series can be supplied as part of a complete positioning system with linear air bearing stages and motion controls from the extensive Aerotech range. Single-axis and multi-axis linear air-bearing stages cover travel ranges from 150mm to more than 1.5m x 1.5m for gantry-style positioning systems.
Motion systems from Aerotech can include work handling components, special fixtures, machine base or other components and assemblies. Systems are delivered completely tested and fully cabled with performance and calibration-related documents included, along with motor parameter set-up data based on actual loading conditions.
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