Abubuwan da aka sawa na crankshaft sune galibi babban mujallu da haɗin igiya shaft whiskers. Musayar motsin motsi na piston na injin bugun bugun jini guda hudu da kuma jujjuyawar crankshaft zai haifar da crankshaft a shafa a kusurwoyi daban-daban. An rage wannan juzu'in zuwa ƙaramin matakin ƙarƙashin aikin mai mai mai.

Lokacin da injin ke gudana cikin babban sauri kuma yana ƙarƙashin nauyi mai nauyi, zazzabin daji yana ƙaruwa kuma haɓakar thermal yana faruwa. Sabili da haka, ya kamata a bar wani tazara tsakanin ɗamarar da ɗamarar don kare crankshaft. Tazarar da ke tsakanin katako da daji ba zai iya tabbatar da cewa injin yana aiki na dubban dubban kilomita ba. Adadin rata a hankali yana ƙaruwa tare da lalacewa na shaft da ɗaukar nauyi.

Kodayake crankshaft ana kiyaye shi ta hanyar mai da mai da ɗaukar nauyi, wani lokacin crankshaft yana fama da lalacewa mara kyau saboda ƙarancin man fetur, datti mai datti, izinin ɗaukar nauyi mara kyau, saman lamba mara daidaituwa, ƙarancin ƙarewa da daidaito.

Ana iya duba mashin ɗin mota tare da wani dandamali na daidaitawa, musamman don ganin matakin buckling ɗinsa, wanda za'a iya auna shi da tebur mai juyawa. Har ila yau, akwai lalacewa na babban mujallarta da kuma haɗin haɗin gwiwa, wanda za'a iya auna shi da micrometer. Ƙaƙwalwar crankshaft zai haifar da lalacewa na jarida a lokacin amfani, samar da waje-zagaye da cones. Mai zuwa game da hanyar gano shi:

1. Shafa crankshaft sosai, musamman ma sashin dubawa ya kamata ya zama babu mai, kuma sashin aunawa yakamata ya kasance nesa da ramin mai;

2. Ma'auni na karkatawar zagaye: Yi amfani da micrometer na waje don yin ma'aunin ma'auni masu yawa a kan wannan ɓangaren giciye inda jaridar ta kasance mai tsanani (ma'auni na farko a bangarorin biyu na ramin mai jarida, sa'an nan kuma juya 900), tsakanin manyan. diamita da ƙananan diamita Rabin bambanci shine karkatar da zagaye;

3. Ma'auni na gyare-gyare na cylindricity: ma'auni mai yawa a kan sashin tsayin daka na jarida, rabi na bambanci tsakanin babban diamita da ƙananan diamita shine karkacewar cylindricity.