Gear

Gears bụ ihe a na-ahụkarị na nnyefe igwe, dị ka igbe gia, ebe gia na ngwa ndị ọzọ dakọtara iji gbanwee ọsọ, torque, na ntụzịaka. A na-ejikarị ngwo eme ihe maka nnyefe (mgbanwe okirikiri) ma ọ bụ maka mmegharị ahịrị. Anyị na-enyekarị ngwo ọkụ anyanwụ nke ọma, ngwa mbara ala (Epicyclic gearing), na ngwa eji eme ihe n'ichepụta ụgbọ ala, wdg.