● Ihe mkpuchi rola gburugburu nwere arụmọrụ nhazi onwe ya na-akpaghị aka
● Na mgbakwunye na ibu radial ibu, ọ nwekwara ike iburu ibu axial bidirectional, enweghị ike iburu ibu axial dị ọcha.
● Ọ na-enwe mmetụta dị mma na-eguzogide
● Kwesịrị ekwesị maka njehie nrụnye ma ọ bụ ntụgharị nke ogwe osisi kpatara n'oge njehie akụkụ