Electric rolling doormotor specification are as followed: MODEL NOMax upgrade height(M)Max elevating weight(KG)Power (W)Current Rating (A)Output Torque (N.m)rotation (r/min)CHAIN NO 220V 50HZJL600-1P6.56004003.94124.810AName:Chain-device Series Electric doormotor(Electric rolling motor):1. Subitable for all kinds of roller shuter door(from 300kg to 1500kg,we also can produce according to your request.)2. Reliable performance,Stable and safet 3. Location accuracy less than 1.5 centimeter 4. Chain drive: could lock chain wheel to prevent the door slipping when the chain split unexpected5. Special light volumes door machine is light weight, small vibration, low noise, can be used to replace tubular motor, torque, reliable performance6. Roller shutter door may be opened and closed by remote control