In the process of preparation of metallographic sample, pre grinding, polishing and grinding are the indispensable procedures. This machine YMP-1 is produced with PPC sewage collection plate and cover and is the latest product with a new and beautiful appearance. This machine is controlled by single chip microcomputer, grinding disc 100RPM-1400RPM of stepless speed regulation with digital tube display. The motor is DC brushless motor and don’t need to replace the brush, used for a long time. The machine is non-toxic painted. Strong large support chassis design ensures the precision rotary balance. Powerful motor brings strong power and efficient grinding and polishing experience. Spindle leak-proof design ensures the bearing almost without damage and the super mute design brings a good experience. It supports for fast disk system, with the use of elasticity, and can be used with automatic grinding device. Features: low noise, convenient operation, beautiful appearance, safe use. This machine can be adapted to various materials preparation of test samples. The polishing disc diameter is larger than the domestic similar products. The platen speed of polishing disc operates independently. It is the best equipment of metallographic sample preparation. Main parameters: Diameter of the polishing and grinding disc: 230mm Diameter of the abrasive paper: 230mm Rotational speed: 100～1400r/min, stepless Or four speed 300r/min, 600r/min, 900r/min, 1400r/min Motor: DC brushless motor,two-phase 220V 400W External dimension: 420×623×320mm Net weight: 30Kg