Lub nplhaib puab thiab sab nraud ntawm hom pob bearings no muaj qhov sib sib zog nqus groove raceway uas tuaj yeem siv los nqa radial loads thiab qhov chaw ntawm axial loads. nws tuaj yeem muab qhov chaw ntawm kev kub ceev angular hu rau pob bearings.