Iko kushanda kweinjini yedhiziri kunopedzwa necylinder yega yega, saka simba rinoshanda pa crankshaft rinopindirana uye harina kuenzana. Kuti ufambise masimba aya zvakanaka, kutenderera kwe crankshaft pachayo kunofanirwa kugadzikana. Kuti iite kuti igadzikane, crankshaft inofanira kunge yakaenzana. Iyo crankshaft inoenderana nekurongeka kwenhamba yemasilinda.

Pama crankshafts einjini dzedhiziri nhatu-, ina-, shanu, uye manomwe-cylinder, huremu hunodiwa kuti crankshaft iwane huremu. Ukuru uye chimiro chechiyero chechiyero chinoverengwa panguva yekugadzira. Mazhinji ezviyero zvezviyero zve crankshafts zvakabatanidzwa kune crankshaft kana uchigadzira kana kukanda. Mune imwe. Zvisinei, huremu hwemamwe mainjini edhiziri hwakasungirirwa ku crankshaft. Nekuda kwehukuru hukuru hwemhando iyi yebharivhavha, kusungirirwa kwebhaudhi kunowanzoshandiswa kana nzvimbo yekuisa isina kukwana.

Kune yakatwasuka matanhatu-silinda injini yedhiziri ine crank angle ye 120, chiyero chaita chakanaka. Zvinoita sekuti hapana chikonzero chekuisa chiyero chehuremu. Nekudaro, iyi chiyero mhedzisiro yesimba re inertia pane crankshaft kana cylinder block. Kana iri injini yedhiziri, kuchine yakawanda inertial simba, iyo dzimwe nguva inoita kuti kutakura kukuru kuwedzere kana kuti cylinder block.

Kuti udzivise kutadza kwakadaro, chikamu chega chega che crankshaft chine simba rakakura risingaite, saka kuchine chivharo chechiyero. Kune huremu hunosungirirwa nemabhaudhi, kana crankshaft ichida kugadzikwa, huremu hunofanirwa kubviswa nekumakwa kudzivirira kuisirwa zvisirizvo kubva pakupwanya chiyero kana uchiisazve.