Material enters the hammer mill’s grinding chamber and is repeatedly impacted by hammers attached to a high-speed rotor. Impact between the hammers and material, along with particle-to-particle and material-to-machine impact, reduces the material in size. 當物料被粉碎到足夠小，可以通過篩網或格柵時，它就會從中排出. Rotor speed, 錘配置, 螢幕大小, and material characteristics all influence the resulting particle size.
