The 3-roller lappers made by ore factory adopt rollers of good quality of 70 Rockwell hardnear. 3rollers of the front, the middle and the rear are aH made of chilled alloy castiron by surface quenching and good abradability ,and complete with cooling device to sink the heat produced by work in rorer chamber. This machine is of simple structure and easy to disassemble and clean .It is used to grind various paints ,printing ink soap ,petrochemica, oi and grease chemical, plastics, rubber, pigment , etc. It can be used also to make sample for laboratories, making teas and working out tormulas. Turning the waste into the useful to save raw material, the is of great importance to raise economical beneficial result and the quality of products .It is an ideal equipment for various industrial enterprises.