Rugged, heavy-duty incremental encoder with aperture up to 45 mm Through-hole encoders with flexible customized hole sizes Pulse count up to 10,000 P/R, ultra-high anti-interference performance Polymer grating, superb shockproof performance, protection level up to IP66 Perfect for a variety of applications in the port, metallurgical, mining, steel, oilfield and automation industries, the EX encoder is explosion-proof.