... Screw of Z axisApplications: BD-1325 Granite and Marble cnc router Engraving 3D relief, shade vulture, cutting and drilling on material ... so on.Advantage Features: BD-1325 Granite and Marble cnc router 1,Profiled steel welded lathe bed stabilizing treated under high ... Y axis driven by double motor ensures stable performance of machine.3,High precision rack gear transmission ensures high accuracy , fast ...