I-crankshaft iyingxenye ebalulekile yenjini, futhi ukusebenza kwayo kuhlobene ngokuqondile nekhwalithi nokuphila kwenjini. Isimo sekhwalithi ye-crankshaft sinquma ngokuqondile izinga lokusebenza nezinga lokuphepha lenjini kadizili. Uma i-crankshaft iqhubeka nokusetshenziswa ngemva kokugoba nokuguqulwa kwe-torsion, izosheshisa ukuguga kwendlela yokuxhuma i-crankshaft, futhi ibangele nokuqhekeka nokuphuka ku-crankshaft. Ngaphambi kokuba injini ihlanganiswe, kutholakala ukuthi ukugoba kwe-crankshaft kudlule izinga lobuchwepheshe, ngakho-ke izihlahla ze-coaxial akufanele zihlanganiswe ngokungafuni. Uma i-crankshaft ene-curvature eyeqile ifakwe nezihlahla ezinkulu, i-crankshaft izoba qinile futhi ikhululeke ngesikhathi sokusebenza. I-crankshaft izokhiqiza ingcindezi eyengeziwe esihlahleni esithwalayo, futhi ngenxa yalokho, isihlahla esithwalayo sizoguga ngokushesha, okungase kubangele ingozi yokusha kwesihlahla. Lesi sihloko sihlaziya imbangela yokugoba nokusonteka kwe-crankshaft.

Izimbangela zokugoba nokusonteka kwe-crankshaft:
(1) Uma i-crankshaft igaya futhi icutshungulwa, indawo yokumisa i-clamping ayilungile, futhi ukunemba kwe-grinder ngokwayo akuphakeme.
(2) Injini igcwele ngokweqile, ngokuqhubekayo "i-deflagration", futhi umsebenzi awuzinzile, ukuze amandla ephephabhuku ngalinye angalingani.
(3) Igebe phakathi kwebheringi ye-crankshaft kanye nensimbi yokuxhuma likhulu kakhulu, futhi ukucinana kuhlukile, okubangela ukuthi isikhungo sejenali esiyinhloko singadluleli futhi sibe nomthelela phakathi nokusebenza.
(4) Lapho insimbi yenjini ishile futhi i-crankshaft igone, i-crankshaft izogoba futhi iphenduke.
(5) I-axial movement ye-crankshaft inkulu kakhulu, noma isisindo sepiston neqembu lenduku yokuxhuma sihlukile, futhi umehluko mkhulu kakhulu.
(6) Isikhathi sokuthungela sisengaphambi kwesikhathi kakhulu, noma kuvame ukuba namapulaki ezinhlansi angu-1 noma amabili angasebenzi kahle, okubangela injini ukuthi isebenze ngendlela engalingani kanye no-crankshaft ukuthola amandla angalingani.
(7) Ibhalansi ye-crankshaft iphukile, noma ibhalansi yeqembu lenduku yokuxhuma i-crankshaft kanye ne-flywheel iphukile; i-crankshaft igugile ngokweqile, amandla anele kanye nokuqina, noma ukugoba nokunyakaziswa ngenxa yokuhlangana okungafanele.
(8) Impahla ye-crankshaft ayilungile, noma i-crankshaft ikhubazekile ngenxa yokubekwa okungenangqondo isikhathi eside.
(9) Lapho imoto iqala ukushayela, isenzo sokuxegisa i-clutch pedal siyashesha kakhulu, futhi ukuthembisana akuthambile. Noma qala injini ngamandla asheshayo, okubangela ukuthi i-crankshaft iphenduke ngokuzumayo.
(10) Sebenzisa ibhuleki eliphuthumayo ngenkathi ushayela, noma sebenzisa igiya eliphezulu nesivinini esiphansi ukuze ushayele ngokungabaza lapho amandla enjini enganele.