incremental rotary encoder / optical / hollow-shaft
OPKON Optik Electronic
The PRI 58SH is an incremental encoder engineered by Opkon. It has a case diameter of 58 mm, and a semi-hollow shaft diameter of 6, 8, and 10 mm.
The encoder has a resolution range of 100 to 5000 pulse/turn. It measures using an optical method, with a maximum speed of 4000 rpm.