Kwinkqubo yebhokisi yegiya yeplanethi, umthwali weplanethi udlala indima ebalulekileyo kuwo wonke umsebenzi kunye noyilo lwebhokisi yegiya.Ibhokisi yegiya yeplanethi inamacandelo amaninzi, kuquka aizixhobo zelanga, iigiya zeplanethi, aigiya yeringi, kunye nomthwali weplanethi.Nasi isizathu sokuba umthwali weplanethi ubalulekile:

Inkxaso yeeGear zePlanethi:

Umthwali weplanethi usebenza njengesiseko senkxaso yezixhobo zeplanethi.Isijikelezi-langa sigiya umnatha ngazo zombini iigiya zelanga kunye negiya yeringi, kwaye zijikeleza kwigiya yelanga ngelixa zikwajikeleza i-axis esembindini yesithwali seplanethi.

Ukuhanjiswa kweTorque:

I-torque eveliswa yigalelo (edibeneyo kwi-sun gear okanye i-carrier carrier) idluliselwa kwimveliso ngokusebenzisa iiplanethi zeplanethi.Umthwali weplanethi unceda ukusasaza le torque kwiigiya zeplanethi, ezivumela ukuba zijikeleze kwaye zibe negalelo kunciphiso lwegiya ngokubanzi okanye ukonyuka kwesantya.

Ukuhanjiswa komthwalo:

Umthwali weplanethi unceda ukuhambisa umthwalo phakathi kweegiya zeplanethi.Olu nikezelo luqinisekisa ukuba umthwalo kwigiya nganye ulungelelene, ukuthintela ukugcwala kwegiya nganye kunye nokukhuthaza ukuqina nokuthembeka kwebhokisi yegiya.