... used for wood,metal and stone engraving High speed cnc router JCUT-1218A (47''x70.8''x5 ... . Feeding height: 120mm or bigger7) Max. Speed: 6,000mm/min8) Working speed: 0 - 4,000mm/min9) Mechanical precision: ... ) Spindle: 1.5kW(80mm in diameter) variable speed, water cooled motor (or 2.2kW or 3kW,or bigger)16 ... ) Spindle speed: 0 - 24,000rpm/min17) Blade diameter: ...