Similar to Drive-in and Drive-through racking, the Push Back Racking is able to better utilize warehouse space with the removal of lanes and aisle. In this type of racking system, pallets are loaded and unloaded from one aisle and each position is able to hold up to four pallets. Pallets are placed on wheel carts that roll on inclined frames. When a new pallet is being loaded into the location, the rest of the existing pallets will be pushed back into the storage lane. Goods will then be picked from the first pallet. After the first pallet is removed, pallets behind will automatically slide to the front due to the force of gravity.Although Push Back racking system can increase pallet density which is ideal for warehouses, products that needs to be First-In-First-Out(FIFO) cannot be placed on such racking. Reason being, when a new pallet arrives and is loaded into the location, the rest of the pallets are being pushed to the back. It will then be impossible to pick from the earlier batches. Thus, this racking system should not be recommended to store products which have an expiry date.
In Gravity Flow racks, rollers are being used just like the Push Back racks. The main difference is that palletized loads are loaded from the back and being rolled to the front on rollers with the help of gravitational force. Goods will always be picked from the front and thus the First-In-First-Out (FIFO) rule is being observed. This eliminates the drawback of the Push Back Racking system whereby the FIFO rule cannot be carried out. Another benefit of this system is that pickers and forklifts will be accessing from different aisle as the picking of goods and loading of pallets will be on two different sides. This keeps the pickers a safe distance from the forklifts that are replenishing the racks.
2 comments:
Very useful description of how push back racking can benefit some warehouse operations.
Nice to read this article will be very helpful in the future, share more info with us. Good job! double deep racking
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