Brief introduction: The MPJ-1A grinding prototype is mainly used for surface preparation of spectral analysis samples and polishing of metal, ceramic, glass and other devices. The entire machine has a compact structure, with a single disc and two speeds, and can be matched with grinding wheels of different particle sizes and hardness, as well as sandpaper for grinding; Polishing is a major process in the preparation of metallographic specimens. This machine has stable rotation, low noise, convenient operation, and high work efficiency. Suitable for metallographic testing rooms in factories and research institutions. Main technical specifications of MPJ-1A spectral grinding prototype Grinding disc diameter: φ 400mm Speed: 1400r/min and 2800 r/min in two gears Input power supply: AC380V 50Hz (three-phase five wire system) Maximum input power: 2kW Net weight: 80kg Maximum external dimension: long × wide × high 590×580×1020(mm) (mm)