... speed reducer, gearbox, gear reducer, gear unit Reduction ratio: 1:3.21~1:289.74 Output torque: 50~18000N.m MD series helical gearbox, speed reducer, gear reducer, gear ... along with other merits such as easying to attain various transmission ratio, high efficiency, low vibration and high permissible axis ... , but also be advantage of localization of related transmission equipment. Helical speed reducer