Official Answer
Answer
Katangar radial $w$ na zobe mai karkace yana ƙayyade 'fitowa' zoben sama da shaft ko ƙasa da guntu. Wannan shine 'kafada mai riƙewa' wanda a zahiri yana riƙe ɓangaren mating. Dole ne masu ƙira su tabbatar da cewa ɓangaren mating ɗin yana da fuskar tuntuɓar wanda ke rufe bangon radial na zobe don gujewa ɗaukar ma'ana a gefen ciki. Koyaya, dole ne a sami izini tsakanin ID na ɓangaren mating (don zoben shaft) da OD na zoben. Idan ID ɗin ɓangaren mating ya yi ƙanƙanta, zai buga 'kunne' ko 'juyawa,' yana hana haɗuwa da kyau. An fi son zoben karkace a nan saboda ba su da 'kunne' ko karas, suna ba da lamba 360-digiri.
