... cast ,moving working table squ High Precision Jade Engraving CNC Router Machine ,CE Authorized Products, this is the newest model ,with ... guide way ,and ball-screw transmission for x,y, z axis , more scientific to ensure ensure the parallelism ,verticality and concentricity ... nut rolling ball screws from Germany for x,y,z axis square linear guide wayResolution 0. 01mmHigh Speed synchronization of ...