The PI20 series is an integrated stainless - steel circular grating. The stainless - steel material gives it good wear resistance and corrosion resistance, enabling it to adapt to certain industrial environments and ensuring the service life and measurement stability of the grating.

On its cylindrical surface, incremental rulings with a pitch of 20μm are engraved, and it also has an optical reference zero position. There are six sizes available for selection (with diameters of 75, 100, 115, 150, 200, and 300mm).

The circular grating has excellent installation accuracy and is equipped with a conical mounting system, which can reduce the need for machined parts with high - tolerance requirements and eliminate eccentricity. It features a large inner diameter and flexible installation.

The non - contact form eliminates the backlash, torsional errors (torsional distortion), and other mechanical hysteresis errors inherent in traditional enclosed gratings. It is compatible with the RX2 read head.