It is a machine that makes the grinding process in feed and wood pellet facilities by breaking the product with protruding metal parts that called hammer. Hammers are connected to the rotor via discs and it works with the rotor as concentric. Cereals or grains of wood are broken by the impact of hammers by rotating at a certain speed and gets into smaller pieces. The product of the desired size is obtained by continuing hammer strokes. There is an oval screen under the mill and its mesh sizes are specially produced according to desired size of product. So that, the main product is throwed out from the bottom of the screen. Rotor speed control of the mills can be adjusted according to the hardness and size of the material.