Kayayyaki

Ƙwallon tuntuɓar lamba na kusurwa biyu jere yayi daidai da ƙira zuwa jeri guda biyu na kusurwar ƙwallon ƙwallon ƙafa wanda aka shirya baya-da-baya, amma ɗaukar ƙasa da sarari axial.Suna iya ɗaukar nauyin radial da kuma nauyin axial da ke aiki a bangarorin biyu.Suna ba da tsari mai tsauri kuma suna iya ɗaukar lokacin karkarwa.Ana samun bearings a cikin buɗaɗɗen asali da ƙirar ƙira.