This machine is divided into two types: the standard type and the short head type. Normally the large size of material is fed into the standard type, which means that the size of material is fed into the short head type due to its steep crushing cone, which will unavoidably influence the size of discharge, and therefore it is much suitable for producing the fine goods. Consequentially the standard type is generally used for medium and coarse material, and the short head type for medium and fine material.