Rotor ya rukuruzi, cyangwa rotor ya magnet ihoraho nigice kidahagaze cya moteri. Rotor nigice cyimuka muri moteri yamashanyarazi, generator nibindi. Imashini ya rukuruzi ikozwe hamwe ninkingi nyinshi. Buri nkingi isimburana muri polarite (amajyaruguru & amajyepfo). Inkingi zinyuranye zizunguruka hafi cyangwa hagati (hagati, igiti kiri hagati). Nibishushanyo mbonera bya rotor. Ntibisanzwe-moteri ihoraho ya moteri ifite urukurikirane rwibyiza, nkubunini buto, uburemere bworoshye, imikorere myiza nibiranga ibyiza. Porogaramu zayo ni nini cyane kandi yaguka mubice byose byindege, umwanya, kwirwanaho, gukora ibikoresho, inganda n’ubuhinzi nubuzima bwa buri munsi.