Electric Paper Hole Punching Machine for inner paper sheets, hardcovers, greyboard, plastic sheets, calendars, and so on. The machine is semi-automatic, and features a maximum punching width of 610mm with support for various paper sizes, including A2, A3, A4, A5, B5, and B6. Other notable features include a central lubrication system, easy mold replacement in 5 minutes, and adjustable paper thickness. With a max cycle speed of 4800 times/hour and working speed of 2400-3500 times/hour, this semi-automatic electric paper hole puncher machine ensures high efficiency; with production capable of punching 5 tons of A4 paper daily, 3 times compared to manual labor.