A cikin motoci, ƙwallo da aka fi amfani da ita shine ƙwallo, wanda kuma ake kira bearings. Ƙwallon ƙwallon ƙafa ya ƙunshi sassa huɗu na asali: abubuwan birgima, zoben ciki, zoben waje da keji

Ba daidai ba ne da lokacin da karfe ke shafa da kuma gudanar da wutar lantarki zuwa karfe; Buga na carbon ba saboda carbon da karfe abubuwa ne daban-daban guda biyu.

Ƙarshen jujjuyawar motar wani muhimmin sashi ne na motar kuma yawanci ya ƙunshi goge goge da masu riƙe da goga. Wadannan sassa suna taka muhimmiyar rawa a cikin injinan lantarki, musamman a cikin injinan DC da injin goga na DC.

Za ku ga cewa lokacin da kuka sayi kayan aikin wuta, wasu samfuran za su aika da ƙananan kayan haɗi guda biyu a cikin akwatin. Wasu mutane sun san buroshin carbon ne, wasu kuma ba su san abin da ake kira da shi ba ko kuma yadda ake amfani da shi.

Takarda mai rufe wutar lantarki wani abu ne na musamman da ake amfani da shi don samar da kariya ta wutar lantarki a cikin kayan lantarki da kewaye.