Performance characteristics of shredder 1.The cutter holder and blade on the rotor can be disassembled to facilitate cleaning, maintenance and repair; 2. Each moving tool has 4 cutting edges, which can rotate 90°after wear and continue to be used; 3.The main shaft is driven by the gear reducer, with stable operation, low noise and large torque; 4.PLC program control system is adopted, which can automatically forward and reverse, making the machine run more safe and reliable; 5.The box body is welded and tempered after welding to eliminate the welding stress; 6.The installation position of the moving tool shall be precision machined by the machining center to ensure that the clearance be- tween each moving tool and the fixed tool is the same; 7.The moving tool base is embedded and connected to the tool shaft with high-strength screws, which can prevent the tool falling phenomenon of welded type afterlong-term vibration. 8. it is convenient to transport after shredding, which can reduce the transportation cost, increase the transportation auxiliary efficiency and facilitate secondary treatment.