Chowumitsira rotary ndi mtundu wa chowumitsira m'mafakitale chomwe chimagwiritsidwa ntchito kuchepetsa kapena kuchepetsa kuchuluka kwa chinyezi chazinthu zomwe akugwira pozipangitsa kuti zigwirizane ndi gasi wotentha.Makinawa amatenga kasinthasintha kocheperako, kuponda mbale zokhotakhota, kubalaza zopangira, kupangitsa kuti mpweya wotentha ukhale wosakanikirana ndi zopangira kuti ukwaniritse cholinga chowumitsa.Iwo makamaka ntchito kuyanika ndondomeko ya mitundu yonse ya zinthu ufa.Itha kugwiritsidwa ntchito kwambiri mufakitale yamafuta, fakitale ya feteleza, fakitale yamankhwala, fakitale yamankhwala ndi zina zotero.