The RAB series is a high‑precision air‑bearing direct‑drive rotary stage powered by a rotary motor, delivering excellent dynamic performance and positioning accuracy. Beyond industry‑leading axial, radial, and tilt error motion, it offers exceptional absolute angular accuracy, repeatability, and load capacity—easy to integrate into multi‑axis systems. Featuring outstanding industrial design, the RAB has a 150 mm table diameter (other sizes customizable) and high‑precision circular grating feedback, achieving positioning accuracy better than 1 arcsec with axial and radial runout below 250 nm. 

Powered by CoreTech’s proprietary direct‑drive motor with high torque, it reaches an unloaded speed exceeding 1500 rpm. With linear amplifiers in a vibration‑isolated laboratory environment, it achieves in‑position stability and minimum step size below 0.5 arcsec. Typical applications include metrology, wafer spiral inspection, biological sample processing and observation, synchrotron research, precision manufacturing, optical alignment, and system calibration—wherever arcsec‑level positioning is required.