The BEI Sensors/Sensata part 01070-917 is a high-quality incremental hollow shaft encoder with a 3.5" diameter. This encoder is designed for accurate and reliable position feedback in a wide range of industrial applications. With its hollow shaft design, it can easily fit onto a motor or rotary equipment, allowing for direct coupling and eliminating the need for additional couplings or adapters. The encoder provides precise incremental signals to track rotational movement, ensuring accurate position and speed control. It features a rugged construction, making it suitable for harsh environments and demanding operating conditions. The 01070-917 encoder is a reliable and cost-effective solution for applications that require precise and consistent motion control.