1.Driven by inverter, main motor speed can be adjusted polelessly.

2.The core positioning accuracy is relatively high.

3.Promote the structure driven by a motor, reducing the labor intensity.

4.The control method adopts the principle of automatic control, the dlling speed can reach the optimum value.

5.The whole machine only need to level up, easy to install.

6.Adding water to drill the hole, no dust and healthy for operators.