Njengenye yezingxenye ezibalulekile zenjini, i-crankshaft ithwala isenzo esihlanganisiwe sokugoba nokushintshanisa imithwalo ye-torsional ngesikhathi sokunyakaza. Ikakhulukazi, i-transition fillet phakathi kwejenali kanye ne-crank ithwala ingcindezi enkulu kakhulu eshintshanayo, futhi indawo ye-crankshaft fillet ivamise ukubangela ukuthi i-crankshaft iphuke ngenxa yokugxilisa ingqondo ephezulu. Ngakho-ke, ekwakhiweni kwe-crankshaft kanye nenqubo yokukhiqiza, kuyadingeka ukuqinisa isikhundla se-crankshaft fillet ukuthuthukisa ukusebenza okuphelele kwe-crankshaft. Ukuqinisa imicu ye-Crankshaft kuvame ukusebenzisa ukuqina kokungeniswa, ukwelashwa kwe-nitriding, ukuchama kwe-fillet shot, i-fillet rolling kanye nokushaqeka kwe-laser.

Ukudubula kusetshenziselwa ukususa isikali se-oxide, ukugqwala, isihlabathi kanye nefilimu kapende endala emikhiqizweni yensimbi ephakathi nendawo emikhulu kanye nokubunjwa okunogqinsi olungekho ngaphansi kuka-2mm noma okungadingi ubukhulu obunembile namakhonto. Kuyindlela yokuhlanza ngaphambi kokumbozwa kwendawo. Ukuchama ngesibhamu kubuye kubizwe ngokuthi ukuchama, okungenye yezindlela ezisebenzayo zokunciphisa ukukhathala kwezingxenye nokwandisa isikhathi sokuphila.

I-shot peening ihlukaniswe nge-shot peening kanye nokuqhunyiswa kwesihlabathi. Ukusebenzisa ukuqhunyiswa kwesibhamu sokwelashwa kwendawo, amandla okuthinta makhulu, futhi umphumela wokuhlanza uyabonakala. Kodwa-ke, ukuphathwa kwamapuleti amancane okusebenza ngokuchama kungakhubaza kalula ucezu lokusebenza, futhi isibhamu sensimbi sishaya ngaphezulu kwendawo yokusebenza (noma ngabe isibhamu siqhuma noma siyachama) ukuze sonakalise isisekelo sensimbi. Ngenxa yokuthi i-Fe3O4 ne-Fe2O3 ayinakho i-plasticity, iyaxebuka ngemva kokuphuka, futhi ifilimu kawoyela ithi I-base material deforms ngesikhathi esifanayo, ngakho-ke ukuqhunyiswa kwesibhamu nokuqhunyiswa kwesibhamu akukwazi ukususa ngokuphelele amabala kawoyela endaweni yokusebenza namabala kawoyela. Phakathi kwezindlela ezikhona zokwelashwa kwendawo yokusebenza, umphumela omuhle kakhulu wokuhlanza i-sandblasting.