Rubber grinder:Double-millstone rubber grinder SM600 is a device to granulate rubber crumb of 5-15 mesh, free of steel and other horny impurity, into 40-120 mesh fine rubber crumb. The components as following: main motor, movable millstone frame, movable blade, fixed millstone frame, fixed millstone, main shaft, body, big gear, small gear, circling water cooling system and it's parts.