I-crankshaft iyingxenye ebalulekile yenjini. Izinto zayo zenziwe ngensimbi ye-carbon structural noma i-nodular cast iron. Inezingxenye ezimbili ezibalulekile: ijenali eyinhloko, ijenali yenduku yokuxhuma (nokunye). Ijenali eyinhloko ifakwe ku-cylinder block, intamo yenduku yokuxhuma ixhunywe nembobo enkulu yekhanda yenduku yokuxhuma, futhi imbobo yenduku encane yokuxhuma ixhunywe ne-cylinder piston, okuyindlela evamile ye-crank slider.

Ukuthwala okuyinhloko kwe-crankshaft ngokuvamile kubizwa ngokuthi i-bearing enkulu. Njengensimbi yokuxhuma, iphinde ibe yibhodi elishelelayo elihlukaniswe izingxenye ezimbili, okuwukuthi i-bearing eyinhloko (ama-bearings angaphezulu naphansi). Isihlahla esithwalayo esiphezulu sifakwe emgodini oyinhloko wokuthwala isihlalo somzimba; ukuthwala okuphansi kufakwe kukhava eyinhloko yokuthwala. Ibhulokhi yokuthwala eyinhloko kanye nesembozo sokuthwala esiyinhloko somzimba kuxhunywe ndawonye ngamabholithi amakhulu okuthwala. Impahla, ukwakheka, ukufakwa kanye nokuma kwe-bearing eyinhloko ngokuyisisekelo kuyafana naleyo yokuthwala induku yokuxhuma. Ukuze kudluliselwe uwoyela entweni yokuxhuma enekhanda elikhulu, izimbobo zikawoyela nemigodi kawoyela kuvame ukuvulwa kuphedi lokuthwala eliyinhloko, futhi ukuthwala okuphansi kwebheringi eyinhloko ngokuvamile akuvulwa ngezimbobo zikawoyela nemisele kawoyela ngenxa yomthwalo ophakeme. . Lapho ufaka ukuthwala okuyinhloko kwe-crankshaft, naka isikhundla kanye nesiqondiso sokuthwala.