... Overheat protion. ITEM NO.Rolling Door Motor with 1500kg Maximum Lifting Force and 800W Rated ... motor is develop base on the demand of market. Widely used in supermaket, warehoue,garage,post,bank,factory ... mechanism has reasonable design, advanced technology, gear not easy wear, durable, operation, low ... (constant speed function).7.Motor starting torque, overload ability. Electric Garage Door machine for ...