The Impact Crusher is mainly used in secondary crushing ， and can crush material whose crushing compression strength is not more than 320mp. It is suitable to produce high rank highway 、 hydroelectric and building material.

Illustration of How impact Crushers runs

When the materials fall down into the feeding mouth of the impact crusher, the roller will drove them to thetogged plate with a very high speed. The large materials will become small ones. When the small ones fall down to the roller, they will be crushed onto the togged plate once again. They will get smaller, and fall down at the bottom of the impact crusher.