The BEI Sensors/Sensata part 01070-937 is an incremental hollow shaft encoder with a 3.5 diameter. This encoder is designed to accurately measure position and speed in industrial applications. With its compact and reliable design, it offers precise feedback for automation and motion control systems. The hollow shaft allows for easy mounting and integration into various equipment. Backed by BEI Sensors/Sensata's reputation for quality and reliability, this encoder is a reliable and efficient solution for industrial motion control applications.