How to Optimization Pallet Storage and Picking

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World-Class Warehousing and Material Handling

Figure 5.18 Bar stock in a cantilever rack at Aurora, Indianapolis, IN

Pallet Flow Racks In PFRs, loads are conveyed (FIFO) on skate-wheel conveyors, roller conveyors, or rails from the back of the storage lane to the front. As a load is removed from the front of the storage lane, the next load advances to the pick face. The main purpose of PFRs is to provide high-throughput pallet storage and retrieval and good space utilization. Hence they are used for items with high pallet inventory turnover and several pallets on hand (Figures 5.19 through 5.21). Push-Back Racks Push-back racks provide LIFO deep-lane storage (typically two to five pallets deep) employing a rail-guided carrier for each pallet load. As a load is placed into storage, its weight and the force of the put-away vehicle push the other loads in the lane back into the lane to create room for the additional load. As a load is removed from

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