Power roller conveyor is an important type of roller conveyor. It is suitable for conveying all kinds of boxes, bags, pallets and other items. Bulk materials, small items or irregular items need to be transported on pallets or in turnover boxes. . The power roller conveyor is suitable for conveying items with a flat bottom, and is often used for horizontal or upward slightly inclined conveying lines. The driving device transmits the power to the drum to make it rotate, and conveys the articles through the friction between the surface of the drum and the surface of the conveyed articles. According to the driving mode, there are separate driving and group driving. Each roller that is driven separately is equipped with a separate drive device for easy disassembly. Group drive is a group of several rollers driven by a driving device to reduce equipment cost. The transmission modes of group drive include gear transmission, chain transmission and belt transmission. Power roller conveyors are generally driven by AC motors, and can also be driven by two-speed motors and hydraulic motors as required.