Type 7710 is driven with a single chain 5/8" x 3/8" from roller to roller (180°), for Type 7711 a chain 5/8" x 3/8" drives the rollers along the total conveyor length.

Accumulation Conveyor Type 7716
The conveyor's accumulation principle is effected by cog-wheels, which are operated pneumatically.

Chain Conveyor Type 7720
Two double chains, working in parallel, are used to transport the goods.