Hammer mills can be used in different sizes. These are used in several industries, such as coal, hard chemicals, lime, quarries, fertilizers, minerals, wood chips, slaughterhouse byproducts, rubber / plastic hard friable grains, and particle boards. The devices are made specifically for the purpose of particle reduction. The product is directed to the middle inlet section of a feeder. The machine works in one direction, the product is directed to the reception hopper and from there to the entrance of the mill. The milling process is performed with a very high peripheral speed, throwing the product between the moved blades and the shirt. It has several sieves with different grain sizes. Motor power: 7'5 kw and 1440 rpm.