PC board is very thickness and tough, it can achieve 12cm. If use normal crusher to crush, the gear box and motor will be easy breaken, because when the rotor can not break the PC board, the running force will break the gear box and motor. To avoid this matter happen, we has a new design of heavy duty shredder to protece the gearbox and motor, this design is suitable for crushing tough material, such as PC board, circuit board, nylon board.
