NASHVILLE STATE Community College Warehouse & Inventory Management LOGI 1030 Pallet Storage Systems Material Handling Equipment
Jan 19, 2015
NASHVILLE STATE Community CollegeWarehouse & Inventory Management
LOGI 1030
Pallet Storage Systems
Material Handling Equipment
Pallet StorageBlock stacking:
Stored on the floor Pallets are stacked on top of each other Stack ability and stack height are dependent on the
following factors: WeightGeneral stabilitySOPs/Safety/OSHA acceptable safety
limitsFloor lead restrictionsPhysical height availabilityCrush limits
Pallet StorageBlock stacking:
Use when retrieving product based on LIFO (Last In First Out)
Not optimal for FIFO (First In First Out)
Best for large number of pallets for same SKU, low cost, no racking
Block Stacking
Pallet StorageStacking Frames:
Portable and collapsible framesBuild as neededSteel uprights with steel deckingEasy to collapse and storage is compact
Use for loads/pallets that are unsafe to stack on top of each other
Pallet Storage
Single-Deep Pallet Rack
Permanent racking only one pallet deepCan store multiple SKUs in same
column and rowBest to be used with loads that are not
stackable and SKUs with only a few pallets of product
Single-Deep Pallet Rack
Pallet Storage
Double-deep pallet rackPermanent racking two pallets deepUse with SKUs with five pallets or more
of product AND retrievals that are in multiple of two pallets
Use with high volume SKUsCan save significant space over single-
deep pallet racks
Double-Deep Pallet Rack
Pallet Storage
Drive-In Rack:Able to drive into the rackRacks are up to ten pallets deepPallets are stored on rails instead of
deckingUse with SKU quantities of five pallets
or greaterBest when have SKU totaling 20 pallets
or moreDownside, much slower production due
to confined space
Drive-In Rack
Pallet Storage
Pallet Flow RackSimilar to Drive-In Rack but has rollers
on the railsPallets are removed FIFO from the side
opposite from which it was loadedAs pallets are removed the remaining
pallets roll forwardUse with SKUs totaling ten pallets or
more
Pallet Flow Rack
Pallet Storage
Push Back RackSimilar to pallet flow rackPallets are removed LIFO from the same
side they are loadedLoad new pallet by pushing existing
pallets backRemove a pallet and the remaining
pallets flow forward
Push Back Rack
Pallet StorageMobile Pallet Rack
Series of single deep racks abutted next to each other with no aisle in between
Aisles are creating by pushing or cranking rows apart
Upside: considerable space savings
Downside: very slow production
Mobile Pallet Rack
Material Handling EquipmentWalk Behind Pallet Jack
May be manually operated or motorizedOperate from a walking positionMotorized versions may be capable of reaching
low heightsBest for short distance move
Material Handling EquipmentCounterbalanced Lift Truck
Lift truck with the weight on the back end to counter the weight of the load on the forks on the front end
Material Handling EquipmentStraddle Truck:
Instead of using counterbalance to provide stability, this truck uses outriggers to straddle the pallet.
Material Handling Equipment
Side Loader:Loads from the side. Forks are located
on the side not the front.Allows the operator to travel down the
aisle without having to turn the truck to retrieve a pallet
Downside: Can only reach one side of the aisle from a given direction of travel.
Side Loader
Material Handling EquipmentTurret Truck
Forks swing on the mast to either sideAllows for more narrow aisle spacing
Material Handling EquipmentAutomated Storage Retrieval (ASR)
Generally computer controlledRetrieval truck follows a computer controlled fixed pathStorage locations consist of a matrix of fixed locations