Independently developed for the needs of heavy cutting and high precision in machine tools. It is driven by a hydraulic motor, with a simple structure, high rigidity, and high reliability. The tool holder can rotate bidirectionally, allowing for tool selection nearby, effectively saving tool change time. It is locked by hydraulic pressure, with a strong locking force, suitable for heavy cutting conditions. Its specifications fit various CNC thread cutting machine tools and can connect to various CNC systems. The interface is simple, and as a key functional component, it greatly enhances the machining capacity and efficiency of machine tools, ensuring that parts can complete multiple turning processes in a single clamping.