... supply: 380V/50HZ , 220V/50HZ 2. Max height: 4.5M-9M 3. loading: 200kg-1500k Chain style rolling door motor JD series of ... ,advance structure,large starting torque, short-time duty, stable operation;2.Easy installation, long service life;3.Low noise, small power ... POWER(w)LIFTING POWER(kg.f)RATED LOADMAX HEIGHT(m)CHAIN NUMBERNET WELGHToutputtorque(n/m)outputspeed(r/min) 220V 50HzJD-300 ...