Mabeyala ozungulira okhala ndi mzere umodzi wokhala ndi khola lokhala ndi mabeyala ozungulira okhala pakati pa mphete yolimba yakunja ndi yamkati. Mabeyala awa ali ndi kulimba kwakukulu, amatha kuthandizira katundu wolemera wa radial ndipo ndi oyenera kuthamanga kwambiri.
Mphete yakunja ya chogwirira cha cylindrical cha NJ ili ndi nthiti ziwiri zokhazikika, pomwe mphete yamkati ya chogwirira cha cylindrical ili ndi nthiti imodzi yokhazikika. Izi zikutanthauza kuti chogwirira cha cylindrical cha NJ chimatha kupeza shaft mbali imodzi.
