1. Obere mkpọtụ
Ebe kọntaktị dị n'etiti shea na-ebu na crankshaft dị ukwuu, nkezi nrụgide dị ntakịrị, na e nwere ihe nkiri mmanụ zuru ezu, ya mere, ọrụ ahụ abụghị nanị na ọ dị mma kamakwa ọ dị ntakịrị na mkpọtụ. Bọọlụ nchara n'ime bọọlụ ga-emepụta mkpọtụ ka ukwuu n'oge mmegharị ahụ.
2. Obere nha na nrụnye dị mma
Oghere crankshaft nwere ọdịdị pụrụ iche, na-eme ka ọ na-esiri ike maka bearings ndị ọzọ ịgafe crankshaft ma tinye n'ọnọdụ kwesịrị ekwesị. Ihe mkpuchi ndị na-ebu ibu na-adaba adaba iji wụnye ma nọrọ obere ohere, nke bara uru maka ibelata olu engine.


3. Nwere ike inye ụfọdụ nnwere onwe axial
N'ihi na crankshaft ga-amụba n'ihi okpomọkụ n'oge ọrụ engine, na-eme ka ọ na-emepụta ụfọdụ mgbanwe na axial direction. Maka ịgba bọọlụ, ike axial nwere ike ịkpata iyi eccentric, nke nwere ike iduga ọdịda nke akaghi aka, na shells ndị na-ebu nwere nnwere onwe sara mbara na ntụzịaka axial.
4. Nnukwu ebe kọntaktị maka ikpo ọkụ ngwa ngwa
Mpaghara kọntaktị dị n'etiti shea na-ebu na akwụkwọ akụkọ crankshaft buru ibu, na mmanụ engine na-aga n'ihu na-ekesa na lubricates n'oge ọrụ. Ọzọkwa, nnukwu mmanụ mmanụ na-agafe na kọntaktị kọntaktị, nke nwere ike iwepụ okpomọkụ ngwa ngwa ma melite nkwụsi ike nke ọrụ engine.