Zowongoka za bevel zida zopangira zida zomangira ,Zida zomangiraopanga pamakina omanga, ma seti a zidawa amagwira ntchito yofunika kwambiri pamakina owongolera mphamvu, zofukula, ndi makina oyendetsa, kupereka kuwongolera kolondola komanso magwiridwe antchito odalirika pansi pa katundu wolemetsa. Opangidwa kuchokera ku zipangizo zamphamvu kwambiri, monga chitsulo cha alloy, ndipo amatsatiridwa ndi njira zamakono zochizira kutentha, magiyawa amasonyeza kukana kwambiri kuvala, kukhudzidwa, ndi malo ogwirira ntchito ovuta.
Ma geometry owongoka a magiya owongoka amawapangitsa kukhala okwera mtengo komanso osavuta kuwasamalira, amachepetsa nthawi yopumira pamachitidwe ovuta. Kukhoza kwawo kugwira ntchito pansi pa torque yayikulu komanso kuthamanga kosiyanasiyana kumatsimikizira kusinthasintha pazida zosiyanasiyana zomangira.
Kaya amagwiritsidwa ntchito mu ma cranes, zonyamula, kapena zosakaniza, zida zowongoka zapamwamba kwambiri zimakulitsa magwiridwe antchito a makina, kudalirika, komanso kulimba. Kupaka mafuta ndi kukonza moyenera kumakulitsa moyo wawo wautumiki, kuwapangitsa kukhala odalilika pamikhalidwe yovuta ya malo omanga.