Igiya eliyi-helicalumgodi wephiniidlala indima ebalulekile ekusebenzeni kahle kwama-gearbox e-helical, avame ukusetshenziswa ezimbonini ezifana nezimoto, ukukhiqizwa kukagesi, kanye nokukhiqiza. Amagiya e-helical anamazinyo agobile ekhoneni, okuvumela ukudluliselwa kwamandla okubushelelezi nokuthule uma kuqhathaniswa namagiya asikiwe ngqo.

I-pinion shaft, igiya elincane ngaphakathi kwe-gearbox, ihlangana negiya elikhulu noma isethi yegiya. Lokhu kulungiselelwa kunikeza ukudluliselwa kwe-torque ephezulu kanye nokudlidliza okuncishisiwe nomsindo. Ukwakheka kwayo kuqinisekisa ukusatshalaliswa okungcono komthwalo emazinyweni amaningi, okuthuthukisa ukuqina kohlelo lwegiya.

Izinto ezifana nensimbi ye-alloy noma insimbi eqinile zivame ukusetshenziselwa imishayo ye-pinion ukumelana nemithwalo esindayo kanye nokuguguleka. Ngaphezu kwalokho, le mishayo idlula ekucutshungulweni okunembile kanye nokwelashwa kokushisa ukuqinisekisa ukuhambisana okunembile kanye nokuphila isikhathi eside kwenkonzo.