The Hydraulic Steady Rest (SR, SRR, SRB) is a device designed to prevent workpiece deflection during lathe operations. It supports long, slender workpieces and is mounted on the tool post to move in sync with the cutting tool, ensuring optimal stability. This system is commonly used on CNC lathes, large-scale lathes, multi-tasking machines (M/C), grinding machines, and various types of special-purpose machinery.