Uretse kuba nziza, ifite n'indi mirimo - kukubwira "ikiraro cy'amapine" nyacyo
Akenshi tuvuga ko impeta y'icyuma izengurutse (cyangwa impeta ya aluminiyumu) ​​yuzuyemo amapine mu by'ukuri atari yo ihuriro, izina ryayo rya siyansi rigomba kuba "uruziga", kuko muri rusange ikozwe mu cyuma, akenshi yitwa "impande y'icyuma". Naho "uruziga" nyarwo ni umuturanyi wayo, yerekeza ku gushyiraho inkingi kuri axle (cyangwa steering knuckle), muri rusange inyura mu miyoboro ibiri y'imbere n'iy'inyuma (ishobora kandi gukoresha icyuma gifata kabiri) gishyizwe kuri axle, kandi gishyigikiwe n'umunyungugu. Ihujwe n'uruziga runyuze muri vis y'ipine, hamwe n'ipine kugira ngo habeho ihuriro ry'amapine, rikoreshwa mu gushyigikira imodoka no kuyitwara. Amapine tubona azunguruka vuba ni yo azunguruka amapine. Bishobora kandi kuvugwa ko mu bice bitatu by'uruziga, umuringoti n'ipine, umuringoti ni igice gikora, mu gihe umuringoti n'ipine ari ibice bidakora. Bikwiye kumenyekana ko disiki ya feri (cyangwa feri) nayo ishyizwe kuri hub, kandi imbaraga zo gufunga imodoka mu by'ukuri zitwarwa na hub.