 የውስጠኛው እና የውጭ ጎጆዎቹ በከፍተኛ ፍጥነት በተቃራኒ አቅጣጫ ሲሽከረከሩ እቃው በኬብሉ ተጽዕኖ ከውስጥ ወደ ውጭ ይጨፈለቃል ።
When it is working, the inside and outside cages rotate in the opposite direction with high speed, then the material is crushed from inside to outside by the impact of the cage.