Coolers and freezers pose unique storage challenges. In cold temperatures and confined spaces, it is critical to employ refrigerated racking systems that can withstand harsh conditions and maximize the use of floor space.
The Rack Manufacturers Association specifies that racking reaches what is called the “ductile-brittle transition” at 0° Fahrenheit. It means that racking at or below this temperature is more sensitive to impact, which increases the likelihood of racking failure.
Although many coolers and freezers do not reach this extreme temperature, it suggests that as the temperature in the storage environment decreases, the toughness of the racking system also decreases. As a result, while strength and load-bearing capacity are not affected, the rack structure is more likely to be damaged or even collapse if a forklift or other vehicle hits it.
When to use structural steel racks
It is recommended that structural steel racks be used in coolers and freezers where vehicles are used to access products due to the effects of the ductile-brittle transition.
Structural steel racks have greater frame strength, making them better able to withstand impacts in these environments. Structural steel racks are hot rolled and then their components are welded together. In addition, the crossbeams are bolted to the uprights. These factors contribute to the overall strength of the structural racks.
When to use roll forming steel racks
For hand picking operations in coolers or freezers, roll forming machine racks can be used. Because there is no risk of vehicle impact, the reduced toughness of rolled steel is not a factor.
Compared to structures, roll-forming racks are cost effective. In addition, roll-formed racks can be more easily adjusted and reconfigured because the beams are attached to the uprights by inserting correspondingly shaped connectors rather than bolts.
Reefer Racking Options
All pallet racking types can be made from both structural and rolled steel. So no matter which steel you determine is best for your operation, there are multiple racking systems to choose from.
Selective pallet rack
How it works
● Pallets are loaded and unloaded from the front by forklift.
● Direct access to all pallets or cartons without moving other pallets.
Ideal use
● Warehouse or distribution center setup.
● Continuous product flow.
● Requires simultaneous access to all palletized items.
● Storage of retail products, food and beverages – although can be used to store other products.
●Can be used for back-up storage.
Key Features
● Most common type of racking.
● Offers high selectivity at a low density.
●Most common rack size is 96 in. wide x 42 in. deep.
Pallet Flow Rack
How It Works
Designed for larger inventory movement on pallets.
Supports inclined rollers or wheels that allow cartons to glide from the back (loading) aisle to the front (picking) aisle.
Ideal Uses
●Storage of frozen or chilled product.
●Materials that vary in size.
●Best suits high quality pallets.
Key Features
●Storage can range from 2-12+ pallets deep.
●Provides excellent volume utilization.
●Customizable
●Offers high selectivity and high density.
●Can be combined with other rack types to create a pick module.
●Breaks can be included.
Post time: Feb-07-2022