Two main transmission systems can power up the rotary movement of chain driven roller conveyors. In conveyors driven by chain loops, transmission passes from roller to roller. Alternatively, with better efficiency, less costs and design constraints then the other one, rollers can be driven by a tangential chain which moves straights and provides a continuous power transmission.

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In any case, due to direct transmission from the chain to the rollers, no slippage and excellent traction, chain driven roller conveyor systems are suitable for multiple unit handling applications where pallets and other unit formats need to be transported. They are used for the controlled handling of a great variety of loads, with regular or irregular shapes, with heavy or light unit weights, rugged or fragile, either horizontally or with a light slope. They are used to synchronize automatic transport systems, as slave systems for assembly stations and operating machines, with continuous, step-by-step or accumulating advancing, and for all those applications where idle roller gravity conveying systems are not recommended.