Ama-rotor ephindwe kabili ayingxenye ebalulekile embonini yemishini yokukhiqiza nokucubungula, ikakhulukazi emkhakheni wemishini yokuchoboza nokuhlola. Lawa ma-crushers akhethekile aklanywe ngama-rotor amabili asebenza ngokufanayo ukuchoboza kahle futhi ancibe izinto ezahlukahlukene. Enye yezinzuzo ezibalulekile zama-rotor ephindwe kabili amandla abo aphezulu nokusebenza kahle ekucubungula i-v enkulu.