... machine 3,whole cast seamless weld steel structure 4,water-cooled spindle 5,heavy-duty design CNC Stone Engraving Machine ... ,Z three-axis all equipped with waterproof, dustproof system3. Water cooling constant torque spindle with imported bearing, high power, ... ball screw, 3. three axis dust proof, water proof, 5kw imported bearing water cooling spindle,4. Taiwan-made inverters, fully shielded ...