Ma motors a Z onse ali ndi ma windings olipira, omwe amatha kupereka ntchito yabwino yosinthira. Ma mota otchinjiriza a F-class ali ndi mawonekedwe odalirika otchinjiriza, amatengera njira ya vacuum pressure impregnation, kulowetsedwa kopanda zosungunulira, kutchinjiriza kokhazikika komanso kutentha kwabwino. Itha kukhala yoyendetsedwa ndi magetsi amtundu wa DC kapena magetsi osasunthika, okhala ndi inertia yaying'ono yozungulira, magwiridwe antchito abwino, komanso kusintha kwakukulu kwa katundu. Ndikoyenera makamaka pamakina owongolera omwe amafunikira kuwongolera liwiro, kuthamanga kwambiri, kukhazikika kwachangu, komanso kuyankha tcheru.
Ma motors angapo amatha kukhala ndi magetsi a DC kapena magetsi osasunthika, okhala ndi inertia yaying'ono yozungulira, magwiridwe antchito abwino, ndipo amatha kupirira kusintha kwakukulu. Ndikoyenera makamaka pamakina owongolera omwe amafunikira kuwongolera liwiro, kuthamanga kwambiri, kukhazikika kwachangu, komanso kuyankha tcheru.
Amagwiritsidwa ntchito kwambiri pamakina osiyanasiyana amakina, monga mphero zogubuduza zitsulo, ma coilers, ma compressor a shuga, mitsuko ya simenti, ndi mphira ndi zotulutsa pulasitiki.