Yaimbove tsika yekufunga imwe seti yechigadzirwa gradation, kana kuongorora skrini, macurves seakakodzera kumiririra zvigadzirwa zveese ekutanga (asina kuvharwa) uye echipiri (akavhenekwa) mafidhi, asingabvumirwe ore iyo undersize zvinhu zvinogara zviripo, kusvika pamwero wakati, mumatombo anocherwa uye mumigodhi.Avhareji yekwari haiburitse zvakawanda padombo iri repasi semugodhi weavhareji, asi tsika yakajairika mukuchera migodhi ndeyekubvisa ganda rezasi pamberi pepuraimari crusher.Semuenzaniso, shaya yekupwanya inowanzo shandiswa seprimary crusher.
