Powered Roller Conveyors

Unpowered (gravity-flow) roller conveyors require less effort to transport loads than powered roller conveyors. They are commonly used in warehousing, manufacturing, package handling, and distribution applications and transport objects at a controlled speed with even spacing. Each conveyor section is made up of rollers that are joined to a frame by a number of axles. Because the rollers are turned by a motor-driven belt, chain, or shaft, these conveyors do not require a manual push or slope to move items down the line. Drums, pails, pallets, skids, and bags all have rimmed or uneven bottoms, and the rollers provide a stable surface for moving them. Loads roll forward on the conveyor and can be pushed from side to side across the conveyor's width. The size of the items that can be delivered on the conveyor is affected by the roller spacing density. At all times, at least three rollers should sustain the smallest item on the conveyor.