... .high precision High-accuracy engraving machine with ball screw ZK-1224Introduction: 1.the whole lathe bed is ... z) use 85BYG-450A step motor .3.XY ball screw is 2510 (diameter 25 , lead is 10), ... spindle, low noise, more powerful6.Linear round guide rail for X Y Z-axis, higher precision and longer ... cylinder guideway Driving mode :XYZ-axis use ball screw X,Y-axis working area :1200*2400mmBody dimensions( ...