On the choice of screw conveyor screw conveyor motor type motor in addition to outside power, speed classification, to meet the different requirements of the output shaft and installation needs, there are several motor mounting structure in the form of the body. Depending on the requirements of protection of the motor as well as open-type structure, protection, closed and explosion-proof and other differences. Screw conveyor motor type to be determined according to the type of power, load characteristic, starting performance, working conditions and starting, braking, and the frequency of high and low speed and reverse speed performance requirements and other conditions. Screw conveyor motor points AC motors and DC motors two kinds. However, due to the DC motor needs DC power supply, the structure is more complex, more expensive, less convenient maintenance, so there is no special requirement is normally not used. Our newly designed Y series three-phase cage induction motor of a general-purpose motor is totally enclosed fan-cooled, its structure is simple, inexpensive, reliable, easy maintenance, suitable for non-flammable, non-explosive, non-corrosive gases and no on any special requirements, such as metal-cutting machine tools, conveyors, fans, mixers and so on. Since its start-up performance is better, also applies to high start torque machines such as compressors to certain requirements. The need for frequent starting, braking and reverse situation (such as cranes, etc.), would require the motor overload inertia small and large, should be used for crane and metallurgical three-phase asynchronous motor YZ type or YZR. The majority of customers are generally used three-phase AC power source, so if there are no special requirements for AC motor should be selected. AC motors can be divided into two types of asynchronous motors and synchronous motors. Cage-type induction motor and the winding-two, in which to apply the ordinary squirrel-cage induction motor is the most widely used.