Company record
Professional Instruments Company produces precision air‑bearing spindles whose radial and axial error motions are kept below 10 nm. The product line includes both standard models and customer‑specific designs that may incorporate groove compensation, porous‑media elements, orifices, step compensation, or any combination of these techniques. These spindles are employed in ultra‑precision diamond‑turning machines, hard‑disk servo‑track writing systems, high‑accuracy metrology equipment, and semiconductor processing tools. Manufacturing of the air bearings relies on rotary grinding and cylindrical grinding processes, while the company also offers sub‑micrometer form‑error precision machining on a job‑shop basis.
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