The BEI Sensors/Sensata part 01070-1281 is an incremental hollow shaft encoder with a compact design and a 3.5" diameter. This encoder is designed for applications that require precise positioning and speed control. It offers reliable and accurate feedback, making it suitable for a wide range of industrial and automation systems. With a hollow shaft construction, it can easily be mounted on a motor or shaft, allowing for seamless integration into existing systems. The incremental encoder provides incremental pulses for accurate motion detection and tracking. With its robust construction and high-performance capabilities, the BEI Sensors/Sensata part 01070-1281 is a reliable solution for demanding applications in various industries.