Types of flow systems and how they differ
Carton and gravity flow systems come in several types and configurations. First, you have a choice between rack mounted or frame mounted systems. Rack mounted systems fit into your existing pallet rack or add pallet rack in the locations you desire. Frame mounted systems are lighter in weight, but sturdy enough to handle most flow needs. Their main difference is their welded or bolted construction and the ease in relocation and reconfiguring them. Some systems are even on wheels, making them the perfect choice for mobile pick stations.
The next key difference in flow systems is what type of track you choose - roller track, wheel-bed, or wheel rail
Roller track, basically very similar to conveyor roller sections but with smaller diameter rollers, provides distinct flow lanes for goods to travel on, making these a good choice when you have consistent carton sizes flowing per lane or level.
Wheel-bed flow is a lane-less system, allowing various sized cartons to flow to the pick face. This is a good choice for order fulfillment picking totes going to shipping departments, and mixed flow systems.
Wheel rail is very narrow track one wheel wide, but has wheels one in front of the next from front to back. The rail ends hang over the front and rear beams to provide precisely sized flow lanes that can be adjusted to fit the size of goods being flowed. Cases, cartons, bins and totes are often flowed on wheel rail track. Often rail guides are added to help workers differentiate one size lane from another.