The device has the following characteristics (YJ10, YJ20):
Easy to adjust, cut different diameters of circles by adjusting back shaft bracket position and locking it be small dimension, easy to operate, saving occupied area.

Be suitable for different thickness of work piece through adjusting cutter location. The upper and lower shafts are active and have less cutting bur.
CNC carton circular shear has the following characteristics (SKYJ-20, SKYJ-30):
The machine can produce widely with a high degree of automation.

Processing work piece is controlled by Color touch-screen which is displayed Chinese password, simple and easy to understand.
Workpiece size location and tool feeding are controlled by PLC. The servo motor has accuracy workpiece size, can save time and have high production efficiency while operating.
Crank adjustable brackets are set in the both sides of the machine, which are used for keep paper flat.

The upper and down cutters are active, revolution with frequency conversion is positive. Cutter designed reasonably.