BEI H25D-SS-1024-ABC-4469-LED-SM16 Rotary Encoder

The BEI H25D-SS-1024-ABC-4469-LED-SM16 is an optical incremental rotary encoder in BEI Sensors’ H25D family, delivering 1024 pulses per revolution for precise rotary feedback in automation and motion-control systems. It provides three outputs—A, B, and an index (ABC)—to support reliable quadrature sensing with a defined reference, and the “LED” suffix denotes an integrated status indicator while “SM16” designates the chassis-mount installation style. BEI’s H25D line is offered in multiple supply configurations depending on the exact part number, with examples including 15V and 28V variants to fit different drive electronics and controllers. The encoder is designed for industrial environments, featuring rugged construction and EMI shielding with GEN2 protections that enhance noise immunity and reliability in demanding applications, and it lists a minimum rotation life of 200 million cycles. Typical uses include servo feedback for motors, CNC machinery, robotics, and packaging lines where precise, repeatable rotation sensing is essential.