The impact crusher crushes materials with impact force. When the materials enter the blow bar area, they are crushed due to the high-speed impact of the blow bar and are thrown to the impact plates on the rotor for secondary crush. Then the material will be shot back to the blow bar again for the third crush. This process repeats until the materials are crushed, then discharge from the discharge port. By adjusting the gap between the impact rack and rotor rack, we can change the finished material size and their shape.