遊星ギアボックス conveyors are used when materials is to be moved frequently between particular points over a fixed route and when there exists a sufficient flow quantity to justify the fixed conveyor investment.[4] Various kinds of conveyors can be characterized by the kind of product being dealt with: unit load or bulk load; the conveyor’s location: in-floor, on-ground, or overhead, and whether loads can accumulate on the conveyor. Accumulation enables intermittent movement of each unit of material transported along the conveyor, while all devices move at the same time 
on conveyors without accumulation ability.[5] For example, while both the roller and flat-belt are unit-load on-floor conveyors, the roller provides accumulation capability as the flat-belt does not; similarly, both power-and-totally free and trolley are unit-load overhead conveyors, with the power-and-free designed to include a supplementary track in order to provide the accumulation capability lacking in the trolley conveyor. Examples of bulk-handling conveyors are the magnetic-belt, troughed-belt, bucket, and screw conveyors. A sortation conveyor program can be used for merging, identifying, inducting, and separating items to end up being conveyed to particular destinations, and typically consists of flat-belt, roller, and chute conveyor segments together with various moveable hands and/or pop-up wheels and chains that deflect, push, or pull items to different destinations.[6]
