ABRT Rotary Air Bearing Stages Provide Exceptional Velocity Stability
Aerotech’s new ABRT series rotary stages combine innovative air bearing mechanics, direct-drive servo technology and ultra-high precision angle encoders to provide exceptional levels of angular positioning performance. Available in three models with nominal tabletop diameters of 100 mm, 150 mm and 200 mm, they provide up to 70 kg load capacity with bidirectional repeatability to less than 1 arc-sec (< 5 μradians) and calibrated angular accuracy to +/- 2 arc-sec.
The ABRT series feature large-area air-bearing surfaces that are fully 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. Overall angular resolution when using Aerotech’s A3200 Automation Platform controller and MXH500 multiplication is 0.133 μradians for the largest stage.
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