The GMJ type pot ball mill is an ultra-fine ball milling equipment for laboratories and small-scale production. It is powered by an electric motor with synchronous belt drive, features polyurethane rubber rollers, and is equipped with a handwheel for adjusting roller spacing and mobile casters. It boasts a complete range of specifications, advanced structure, aesthetic design, ease of operation, high work efficiency, long service life, and uniform particle fineness. It is an ideal equipment for scientific research, teaching, testing, and production. The variable frequency drive model of the pot ball mill offers functions such as timed shutdown, frequency adjustment, and digital display of the ball mill pot speed.