... cooling spindle 4.For marble, granite... CNC Stone Engraving Machine 1300*2500*300M ZK-1325 Application1.Suitable for natural marble, granite, bluestone, ... welded T type machine bed, and cast iron gantry, good weight bearing capacity for heavy duty stone.5.High precision rack and ... high precision, long life time.7.5.5kw water cooling spindle, more powerful, low noise, not easy to break cutters.8.With ...