... grinding machines are of simple, safe and convenient operation, low cost and long working life. Our products of ... , de-burring, chamfering and polishing all kinds of metal stamping parts, metal castings, rigid plastic, etc. And the grinding machines are ... lock manufacturing, ornaments & jewellery, electron, artware, machinery and hardware, etc. Specifications:Outside diameter: 550*420*650mmVolume: 250 ...