Zida zamkatindi mtundu wa zida zomwe mano amadulidwa mkati mwa cylinder kapena cone, mosiyana ndi zida zakunja zomwe mano ali kunja. Amalumikizana ndi magiya akunja, ndipo kapangidwe kake kamawathandiza kufalitsa kuyenda ndi mphamvu m'makina osiyanasiyana.

Pali ntchito zingapo zamagiya amkati:

1. Planetary Gear Systems: Magiya amkati amagwiritsidwa ntchito kwambiri pamakina a pulaneti, pomwe amalumikizana ndi zida za dzuwa ndi magiya a pulaneti. Dongosololi limalola kuti masitima apamtunda ang'onoang'ono komanso osunthika, omwe amagwiritsidwa ntchito nthawi zambiri pamagalimoto ndi makina akumafakitale.
2. Kutumiza Mphamvu: Magiya amkati amatha kugwiritsidwa ntchito kutumiza mphamvu pakati pa ma shafts ophatikizika kapena odutsana. Amagwiritsidwa ntchito nthawi zambiri pomwe zovuta za malo kapena zofunikira za torque zimafunikira kuti azigwiritsa ntchito.
3. Kuchepetsa Liwiro kapena Kuwonjeza:Zida zamkatiangagwiritsidwe ntchito kuonjezera kapena kuchepetsa liwiro rotational kutengera kasinthidwe awo ndi meshing ndi magiya kunja.
4. Kuwongolera Motion: Mu ma robotic ndi ma automation, magiya amkati amagwiritsidwa ntchito powongolera kuyenda bwino, kuwonetsetsa kuyenda kosalala komanso kolondola kwa manja a robotic, makina a CNC, ndi makina ena ongochita.
5. Njira Zosiyanitsira: Magiya amkati amathanso kupezeka m'makina osiyanasiyana, monga omwe amagwiritsidwa ntchito pamagalimoto oyendetsa magalimoto, kugawa mphamvu ndi torque pakati pa magudumu ndikuwalola kuti azizungulira pa liwiro losiyana.

Mapangidwe ndi kupanga zida zamkati zimakhala zovuta kwambiri kuposa zida zakunja chifukwa chazovuta zolowera mkati mwa zida panthawi yopangira. Komabe, amapereka zabwino pazinthu zina, monga kuphatikizika, kuchuluka kwa ma torque, komanso kugwira ntchito bwino.