It is particularly suitable for chamfering, deburing and improving the surface roughness of various metallic and non-metallic parts and components (such as bearing rollers, bearing rings, bearing supporters, auto-parts and gears, etc...) and raising the integral appearance quality of parts and components. Therefore, this kind of machines are the firstly selected and indispensable equipment for the trades and professions of plane manufacturing, automobiles, bearings, textile and arts & crafts, etc.