Hammer Crusher is excellent for preliminary size reduction/ fine grinding of soft to meium hard to hard material up to 6 Moh's scale hardness. In this crusher material pas through wide infeed hopper in to grinding chamber. The swinging hammers on the rotating hammer rotar, crush material at the stationary liners fitted on the top side in the grinding chamber before driving them through a screen at the base of housing. Size of the crushed particle depends on the mesh size of the screen and type of hammer used. The method of operation is impack type grinding. This type of crusher is more economical for generalyy big production for corse grinding at lower hourse power.