Ƙwallon ƙwallon ƙafa mai zurfi yana ɗaukar nauyin radial kuma yana ɗaukar nauyin axial matsakaici. Tare da ƙarancin ƙima na juzu'i, babban ƙayyadaddun saurin ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun tsari; sun dace da tarakta, motoci, motoci, babura, da sauran injunan gama gari, a matsayin nau'in bearings da ake amfani da su sosai a masana'antar injina.