Official Answer
Answer
Zobba masu kulle kai suna da ƙaramin 'tab' a juyi ɗaya da 'rami' a ɗayan. A lokacin shigarwa, zoben yana faɗaɗa ko matsawa kamar daidaitaccen zobe, amma da zarar ya zauna a cikin ramin, mai sakawa dole ne ya tabbatar da dannawa shafin a cikin ramin. Wannan sau da yawa yana buƙatar 'saitin' axial na ƙarshe tare da kayan aiki. Da zarar an kulle, zoben ba zai iya faɗaɗa radially ba, yana mai da shi manufa don aikace-aikacen RPM masu girma. Duk da haka, wannan yana nufin zoben ya fi wuya a cire; yawanci, shafin kulle dole ne a cire shi da hannu tare da kayan aiki na musamman. A cikin taro na atomatik, na'urori masu auna firikwensin dole ne su tabbatar da yanayin 'kulle' ta hanyar auna ƙarshen $OD/ID$ na zobe.
