The machine base of JK-40J-D is made of castings with good rigidity and stability. Precision linear rectangle guides are used. It is pre-tightened and with good rigidity and accuracy. The ball screws are grounded with the accuracy of high degree and pre-tightened. The interface is of international standard and coodes and compatible with domestic or foreign engraving software. It is easy to use and suitable mainly for positioning and hole drilling, processing of parts and relative industries.