N'ime sistemu gearbox nke mbara ala, onye na-ebu mbara ala na-arụ ọrụ dị oke mkpa na arụ ọrụ na imewe nke igbe gear. Igbe mbara ala nwere ọtụtụ akụkụ, gụnyere aakụrụngwa anyanwụ,ihe eji eme ihe,mgbanaka gia,na ihe na-ebu mbara ala. Nke a bụ ihe kpatara onye na-ebu mbara ala ji dị mkpa:

Nkwado maka Planet Gears:

Onye na-ebu mbara ala na-eje ozi dị ka usoro nkwado etiti maka ngwa ụwa. Ụwa ahụ na-eji ma anyanwụ gia na mgbanaka mgbanaka ntupu, na ha na-atụgharị gburugburu gia nke anyanwụ ka ha na-atụgharịkwa n'akụkụ etiti axis nke mbara ala.

Mbufe nke Torque:
A na-ebufe ike site na ntinye (jikọrọ na ngwa anyanwụ ma ọ bụ ihe na-ebu mbara ala) na mmepụta site nangwa ụwa. Onye na-ebu mbara ala na-enyere aka kesaa torque a na gia ụwa, na-enye ha ohere ịtụgharị ma tinye aka na mbelata ngwa ngwa ma ọ bụ mmụba ngwa ngwa.

Nkesa ibu:

Onye na-ebu mbara ala na-enyere aka kesaa ibu n'etiti ndịngwa ụwa.Nkesa a na-eme ka o doo anya na ibu dị na ngwa ọ bụla dabara adaba, na-egbochi ibufe ngwa ngwa nke onye ọ bụla na ịkwalite ịdịte aka na ntụkwasị obi nke igbe gear.