Pallet inverter
Also called: load inverter, pallet changer, pallet exchanger
A pallet inverter is a machine that clamps a unit load and rotates it, often through 180 degrees, so the pallet underneath can be removed and replaced without restacking the product by hand.
In depth: Food-grade pallets: what the term means and how to specify one
A pallet inverter moves the load, not the pallet. The machine clamps the load between two platens, rotates it, the old pallet is removed, a new one is placed, and the load is returned upright.
Common uses
| Use | Example |
|---|---|
| Hygiene zones | Moving product from wood pallets onto hygienic plastic pallets at a food or pharmaceutical clean-area boundary |
| Damaged pallets | Replacing a broken pallet without hand restacking |
| Pallet type change | Swapping a pooled or customer-owned pallet for a one-way pallet before export |
| Product retrieval | Reaching the bottom layer of a load |
Why it matters for pallet design
When product changes pallets at a site boundary, the pallet on each side can be designed for its own job. The inbound pallet does not need to meet clean-room rules, and the internal pallet does not need to survive the outside supply chain. Inverters work best with stable, square unit loads that tolerate clamping and rotation.
On a spec sheet or RFQ
If a load passes through an inverter, say so. Mention clamping pressure limits for fragile packaging and the pallet type on each side of the transfer.
Common confusions
A pallet inverter is not a pallet dispenser, which handles empty pallets. It is also not pallet exchange, which is a commercial arrangement between trading partners.
Related
- GlossaryUnit loadA unit load is a group of items, usually cases on a pallet or slip sheet, secured together so it can be stored and moved as a single unit by a forklift or pallet jack. It includes the pallet, the packaging, the stacking pattern and the stabilizers.
- GlossaryPallet exchangePallet exchange is an arrangement where a receiver hands back an equal number of empty pallets of the same type and quality for the loaded pallets it receives, so the shipper does not lose pallets with each delivery.
- GuidesFood-grade pallets: what the term means and how to specify oneThere is no FDA certification for a food-grade pallet. The term means a clean, dry, uncontaminated pallet: new or top-grade wood, kiln-dried and heat-treated (never methyl bromide), or virgin food-contact plastic. FSMA requires transport equipment that will not make food unsafe.
- TypesHygienic plastic pallet: closed decks for food and pharmaA hygienic plastic pallet has a closed, smooth top deck and a closed bottom, with no hollow cavities where dirt, water or bacteria can collect. It is made from virgin HDPE or PP, designed to be washed, and used in food processing, meat, dairy, bakery and pharmaceutical plants.
- GuidesPallets for automation: conveyors, AS/RS and robotic palletizersAutomated systems need consistent, flat, stiff pallets. Bottom boards must cross the conveyor supports (perpendicular to rollers, across chain strands), gaps must not snag, flatness is often held to 1/4 in or better, and AS/RS racks commonly limit sag to 0.5 in. Perimeter-base block and plastic pallets run either way.
More in Handling and storage
- GlossaryAutomated storageAutomated storage, often called AS/RS (automated storage and retrieval system), stores and retrieves pallets with stacker cranes, shuttles and conveyors instead of forklift drivers. It needs pallets with tight dimensional tolerances, low deflection (often 0.5 in, 13 mm, or less) and sound bottom decks.
- GlossaryBlock stackingBlock stacking is storing unit loads directly on top of one another on the warehouse floor, in rows and columns, with no racking. The bottom pallet and the packaging carry the whole stack, so static load and box compression strength limit the height.
- GlossaryConveyorA pallet conveyor moves loaded pallets on driven rollers or chains instead of a forklift. The pallet's bottom deck is the running surface, so the orientation of bottom boards, flatness, deflection and condition decide whether it runs reliably.
- GlossaryDrive-in rackA drive-in rack is high-density racking where the forklift drives into a lane and places pallets many deep on continuous rails along each side. The pallet is supported only along two edges, so its capacity across the unsupported direction governs.
- GlossaryEdge protectorAn edge protector, or corner board, is an L-shaped strip of laminated paperboard, plastic or other material placed on the vertical or top edges of a unit load. It spreads strapping and stretch wrap pressure, protects case corners, and can add vertical stacking strength.
- GlossaryFork tinesFork tines are the two steel arms on a forklift or pallet jack that slide into a pallet's openings to lift it. Their width, thickness, length and spacing set the minimum size of the pallet's openings and affect its dynamic load rating.
Last reviewed 2026-09-24. 232 words.