Allen-Bradley 845H-SJDZ14CKY2 Incremental Encoder

Allen-Bradley 845H-SJDZ14CKY2 is a size-25 optical incremental encoder designed for durable industrial feedback in motion-control systems. The device provides standard A/b quadrature outputs with an index, enabling precise incremental position tracking relative to each revolution. Encased in a NEMA 4/13 enclosure, it withstands harsh manufacturing environments and washdown conditions. Key verified specs include 360 pulses per revolution and a maximum frequency response of 210 kHz, supporting high-speed operation, along with a shaft diameter of 9.517 mm (3/8 in) to match common motor and gearhead interfaces. The CKY2 portion of the model code denotes a connector/cable variant associated with this encoder, facilitating integration into Rockwell Automation setups.