● Ihe mkpuchi rola n'ahịrị okpukpu abụọ bụ nke a na-arụ dị iche iche
● Ka ọ na-ebu ibu radial, ọ nwere ike iburu ibu axial bidirectional
● Radial na axial jikọtara ibu na torque ibu, bụ ndị nwere ike ibu nnukwu radial ibu, bụ ndị a na-ejikarị eme ihe na ihe ndị na-egbochi nkwụsị nke axial n'akụkụ abụọ nke ogwe osisi na ụlọ.