Technical data: 1.Ratio range: 3-20000 2.Input power: 0.12?4KW 3.Output speed: 0.09?832 r/min 4.Permit torque rang:?1225 N.m Characteristic: 1.Closed case, long life, compact structure 2.Helical hard-teeth, low noise, high efficiency 3.Lightweight, favorable adaptability 4.Can be added braker