Posankha mtundu wonyamula, zinthu zisanu zotsatirazi ziyenera kuganiziridwa:

1) Mayendedwe, kukula ndi chikhalidwe cha katundu: mayendedwe a radial makamaka amanyamula katundu wa radial, mayendedwe othamangitsidwa makamaka amalandira katundu wa axial.Pamene kunyamula kumayikidwa pazitsulo zonse za radial ndi axial, mayendedwe a mpira wa angular ndi ma tepi odzigudubuza amatha kusankhidwa.Pamene katundu wa axial uli wawung'ono, mayendedwe a mpira wakuya angagwiritsidwe ntchito.Nthawi zambiri, kunyamula kwa ma bere a INA odzigudubuza ndi apamwamba kuposa a INA ma bearing a mpira, ndipo kutha kupirira zolemetsa ndizolimba.

2) Liwiro: Liwiro logwira ntchito la kunyamula liyenera kukhala lotsika kuposa liwiro la malire n.Kuthamanga kwa malire a mayendedwe a mpira wakuya, mayendedwe ang'onoting'ono a mpira ndi mayendedwe a cylindrical wodzigudubuza ndi okwera, omwe ali oyenera kugwira ntchito mofulumira, pamene liwiro la malire la mayendedwe oyendetsa ndilotsika.

3) Ntchito yodzigwirizanitsa yokha: Pamene coaxiality ya mabowo awiri okhala ndi nyumba sizingatsimikizidwe kapena kupatuka kwa shaft kuli kwakukulu, muyenera kuganizira kugwiritsa ntchito mayendedwe ozungulira mpira kapena mayendedwe ozungulira.

4) Zofunikira zowuma: Nthawi zambiri, kulimba kwa mayendedwe odzigudubuza ndi akulu kuposa mpira wa INA mayendedwe, ndipo mayendedwe ang'onoang'ono olumikizana ndi mpira ndi ma tapered roller bearings akhoza kukhazikitsidwa kale kuti awonjezere kulimba kwa chithandizo.

5) Zofunikira malire othandizira: Zokhazikika zimathandizira kuchepetsa kusuntha kwa axial mbali ziwiri.Ma bearings omwe amatha kupirira bidirectional axial katundu akhoza kusankhidwa.Malire a njira imodzi akhoza kusankhidwa ndi mayendedwe omwe angathe kuthandizira katundu wa axial unidirectional.Palibe malire pazothandizira zoyandama.Udindo, akhoza kusankha cylindrical wodzigudubuza kubala amene mkati ndi kunja mphete akhoza kulekanitsidwa.