Sliding bearing employed cast copper alloy steel and so less wear off and less shaking. Fly wheel has a big moment and greater cutting annd pressing force. Machine body is made of top cast iron and so high intensity and good rigidity. Single disc clutch and agile and reliable. It has 3 functions: Single sheet, continuous and delayed opening. The delay time is adjustable. Operation height is reasonable. Pressing frame's open angle is big. Safety protection system is reliable. Key technical parameter: