High efficient gymstone hammer grinding mill machine, mostly available for herbs, pharmacy medicine industry powder production machine. Hammer mill widely known as for all needs. Usage: The equipment is equipped with several kinds of grinding components, to shred/crush/mill the original material into powders. It has many sorts of applications in many industries. Pharmacy/Food/Chemical, etc. Widely used. Working Principle: The machine equipped with high speed rotating milling components and fixed Gear Rings inside the chamber, by milling components’ high speed rotating, the raw materials are thrown onto the gear rings for being crashed and milled into powder(crash between material&milling components, material&gear rings, material&material). During the milling process, the high speed rotating milling components can produce air-flow, this air-flow blowing the milled out powder out of chamber and pass through Mesh Sieve(The size can be adjusted by changing different sizes mesh). There would be cloth bag tied with the Outlet, this cloth bag will collected the powder, and release the air-flow in the meantime.