Wanpela 'planetary gear reducer' em i wanpela 'mechanical transmission device' we planti manmeri i save yusim we i gat wanpela 'planetary carrier', 'planetary gears', wanpela 'sun gear', na wanpela 'internal ring gear'. Namba wan wok prinsipel bilong en em olsem input bilong san gia i save draivim planet karia na planet gia, na autput i save go aut long intanel ring gia, na i save kamapim 'torque conversion' na 'speed reduction'.




