Ƙwallon ƙwallon ƙafa mai zurfi yana ɗaukar nauyin radial kuma yana ɗaukar nauyin axial matsakaici.Tare da ƙarancin ƙima na gogayya, babban iyakancewa gudun, babban girman kewayon da launuka masu launuka na 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.