Ibice byambarwa bya crankshaft nibinyamakuru nyamukuru kandi bihuza inkoni ya shaft whiskers. Ihanahana ryimikorere isubiranamo ya piston ya moteri ya moteri enye hamwe no kuzunguruka kwa crankshaft bizatera igikonjo kunyeganyezwa kumpande zitandukanye. Uku guterana kwaragabanutse kugera kurwego rwo hasi bitewe namavuta yo gusiga.

Iyo moteri ikora ku muvuduko mwinshi kandi munsi yumutwaro uremereye, ubushyuhe bwigihuru cyera bwiyongera kandi kwaguka kwubushyuhe bibaho. Kubwibyo, icyuho runaka kigomba gusigara hagati yigitereko nigitereko kugirango urinde igikonjo. Ikinyuranyo kiri hagati yigiti nigihuru ntigishobora kwemeza ko moteri ikora ibirometero ibihumbi icumi. Ingano yicyuho igenda yiyongera buhoro buhoro hamwe no kwambara igiti.

Nubwo igikonoshwa kirinzwe namavuta yo gusiga no gutwarwa neza, rimwe na rimwe igikonjo kiba cyambaye imyenda idasanzwe kubera umuvuduko wamavuta udahagije, amavuta yanduye, kwishyiriraho ibidakwiye, kutagira aho bihurira, kurangiza bidahagije kandi neza.

Crankshaft yimodoka irashobora kugenzurwa hamwe na kalibibasi, cyane cyane kugirango ibone urugero rwayo, rushobora gupimwa hamwe nameza yo guhindura ibintu. Hariho kandi kwambara ikinyamakuru cyacyo nyamukuru no guhuza ikinyamakuru inkoni, ishobora gupimwa na micrometero. Crankshaft izabyara ikinyamakuru kwambara mugihe cyo kuyikoresha, ikora hanze-ya cones. Ibikurikira bijyanye nuburyo bwo kumenya:

1. Ihanagura igikonjo neza, cyane cyane igice cyo kugenzura kigomba kuba kitarimo amavuta, naho igice cyo gupima kigomba kuba kure yumwobo wamavuta;

2. diameter na diameter ntoya Igice cya tandukanyirizo ni ukuzenguruka;

3. Gupima gutandukana kwa Cylindricity: gupima ingingo nyinshi kumurongo umwe muremure wikinyamakuru, kimwe cya kabiri cyitandukaniro riri hagati ya diameter nini na diameter nto ni ugutandukana kwa silindrike.