Designing a pallet for automation

What automation actually objects to

• Bottom deck board gaps. Conveyor rollers need continuous support. A gap wider than the roller pitch lets the pallet drop between rollers and stall.

• Board thickness variation. A pallet that is a quarter inch taller than its neighbours fouls a shuttle entering a rack bay.

• Protruding or proud fasteners. They catch on transfer decks and tear conveyor belts.

• Splinters and loose boards. A loose bottom board hangs and snags at exactly the wrong moment.

• Out-of-square decks. A pallet that is not square presents a diagonal to a squaring station and gets rejected.

• Warp and twist. A pallet that does not sit flat rocks on a scale, mis-reads on a profile scanner, and confuses a vision system.

None of these is a strength problem. All of them stop a line.

What to specify instead of a grade

For manual handling, grade is a reasonable proxy for quality. For automation it is not, because grade describes structural condition and automation cares about geometry.

Specify directly:

• Dimensional tolerance on length, width and overall height

• Bottom deck configuration — board count and maximum gap, matched to your roller pitch

• Squareness tolerance on the diagonals

• Maximum warp measured across the deck

• Chamfered lead boards for smooth entry into conveyors and jack pockets

• Fastener flushness — no proud heads on any face

• Deck coverage minimum, if small items or transfer decks are involved

This is exactly the sort of thing a custom build is for, and it is why we prototype before running production.

Reclaimed and automation: an honest answer

Can reclaimed pallets run in automated systems? Sometimes, with qualifications.

The problem is not that reclaimed pallets are weak — as covered in reclaimed hardwood vs new pine, they frequently are not. The problem is *variability*. A reclaimed pool contains pallets from many manufacturers built over many years, and consistency is precisely what a machine needs.

Two workable approaches:

• Tighten the pull. We can grade to a dimensional band as well as a structural grade, at a cost, and reject anything outside it. This works for less demanding systems.

• Split the fleet. New builds to tolerance on the automated lanes, reclaimed everywhere else. Most operations find the automated lanes are a minority of their volume, so the cost impact is smaller than expected.

What does not work is buying standard reclaimed stock and hoping. The failure mode is intermittent, which is the worst kind to diagnose.

Test before you commit

This is not optional and we will push back if you try to skip it.

Take a prototype, run it through the actual system, in the actual configuration, with the actual load. Run it fifty times, not once — intermittent faults are the ones that matter and they do not show up in a single pass.

Then run it through the *failure* cases: the misaligned entry, the slightly overweight load, the pallet that arrives rotated. A system that handles perfect input is not the system you will operate.

We prototype within 48 hours of confirmed dimensions and the cut list is yours to keep. Send the machine specification along with the load specification on the quote form — the machine constraints usually drive the design more than the load does.