Roller conveyors are made up of a series of rollers, which are connected to a frame. The rollers are typically made of metal, plastic, or rubber, and are designed to rotate freely. The rollers are powered by a motor, which is connected to the frame. The motor is usually powered by electricity, but can also be powered by a hydraulic or pneumatic system. The rollers are arranged in a line, and the material to be transported is placed on the rollers. The rollers then move the material along the conveyor. The speed of the conveyor can be adjusted to suit the needs of the operation. Roller conveyors are used in a variety of industries, including manufacturing, warehousing, and distribution. They are also used in the food industry, for transporting food products from one area to another. Roller conveyors are easy to install and maintain, and are relatively inexpensive. They are also highly efficient, and can be used to transport large amounts of material quickly and safely.