With sanding we are looking for a good finish and refers to the work of removing shavings, using abrasive stones, which gives the tube or hydraulic cylinder an excellent linearity and roundness.

Action necessary if then the treated part has to couple in a precise way with other pieces.
While the super-finishing, as the final step, aims to improve the geometry and the tactile and visual appearance of the product on the surface with well-defined roughness, after grinding actions with grinding wheels or abrasive segments.

In fact, in these cases, marks or small defects remain on the surface that must be corrected and removed thanks to the super-finishing operations. This operation carried out with abrasive stones of different structure and composition, designed and customized according to the type of qualitative result to be achieved, usually involves the use of mineral oil as a coolant, so as to avoid clogging of the abrasive stone.