... roller, chrome-plated sheet and stainlle Name: Sand-belt Mirror Grinding Machine KY4-III Usage: 1. Fit to polish the workpieces with ... , lathe or grinder. 4. Technical performance and index of the grinding machine Width of sand belt: 4 inches; Vibrating frequency: 25HZ; Amplitude ... : 500w/220v/1ph Boundary dimension: 540*310*460mm mirror surface machine, sand-belt Mirror Grinding machine