What's the Difference between Impact Crusher and Hammer Crusher?

There are several differences between impact crusher and hammer crusher as follows:

1.    The crushing cavity of impact crusher is bigger than that of hammer crusher;
2.    The crushing ratio of hammer crusher is bigger than that of impact crusher;
3.    The hammer of impact crusher is rigidly connected with the rotor, so it can crush the material directly; the hammer of the hammer crusher is free hanging on the rotor, so it can avoid crushing the material which cannot be crushed to protect itself, but it cannot crush the material;
4.    There is no grid plate at the outlet of the impact crusher. It can discharge the crushed material smoothly with bigger capacity. It can easily crush the big material into small ones, but it is not easy for it to crush small material into smaller. Because the hammer crusher has grid plate at discharge opening, the crushed material of the hammer crusher is more even than impact crusher, and the normal range of the size of crushed material is between 5-10mm;
5.    Impact crusher has two or three crushing cavity, while hammer crusher only has one crushing cavity;
6.    When there is uncrushable or oversized material in the crushing cavity of the impact crusher, the pull rod will push out the impact plate fixed on the back rack, and then the material will be discharged out of the impact crusher, but the hammer crushers don’t have such device.

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