... .Changsheng water cooling spindle 3.DSP control system 4.square orbit for three axis Heavy Stone Engraving Machine ... -12181.Photos:This series of models mainly used for heavy weight of the tile, bluestone,marble, ... ,Castmate,Wentai,Coredraw.5,Double direction cutters cooling system can prolong the lifetime of using.6,High ... rotating speed0-24000rpm/minDrive motorStepperOperation systemDSP control system