Size an empty pallet dispenser from two figures taken off your own line: the pallets per hour the stacking station builds, and the minutes it must run between refills. Peak units per hour divided by units per finished pallet gives the feed rate; magazine capacity divided by that rate gives the autonomy, which has to exceed the forklift round trip to the pallet store. Whether hand feeding, a semi-automatic unit or a fully automatic one is right then depends on how uniform your pallet pool is, because an automatic magazine accepts one format inside one condition window and stops for anything else.
Every capacity and autonomy figure below is a planning reference. The working number is the one measured on the pallet, the bundle and the machine actually in use, and what a dispenser costs is quoted per project against that machine and that pallet.
The four figures a dispenser specification needs
A dispenser stores a stack of empty pallets, singles out the bottom one and presents it at the stacking position at the moment the head is ready. It looks like an accessory and behaves like a bottleneck. Four figures describe it, and all four come from the line, not from a machine catalogue.
| Figure | What it means | What happens when it is wrong |
|---|---|---|
| Magazine capacity | Empty pallets held in one charge. It is an autonomy figure, not a storage figure. | The forklift driver gains a second job and the line starves at shift change. |
| Feed rate | Pallets released per hour. It must be at least the palletizer's stacking rate, with margin for the occasional rejected pallet. | The palletizer waits, and product backs up through the closing machine. |
| Pallet condition tolerated | How far a pallet may depart from nominal and still separate cleanly. It is the figure most often skipped at quotation. | Too tight a window rejects half the pool and turns a supply machine into an inspection station. |
| Discharge interface | Whether the pallet is dropped on the floor, set on a chain conveyor or handed to a shuttle. This sets the position accuracy required. | A pallet that left the magazine square is skewed by the time the first layer lands. |
Working out feed rate and magazine autonomy
Start from the peak line speed, not an annual tonnage. A line running twelve thousand units an hour onto pallets of two thousand four hundred units builds five pallets an hour, so the dispenser releases one pallet every twelve minutes. Put a smaller unit count on each pallet and the same line might need eleven pallets an hour, which calls for a magazine twice the size to hold the same autonomy.
Then convert capacity into time. A twenty-pallet magazine on a station building five pallets an hour runs for four hours: half a shift, with a refill at the break. The same magazine at twelve pallets an hour lasts under two hours and needs attention every shift. Capacity is bought in minutes, and extra minutes only help when the route to the pallet store can be covered inside them, so the store location belongs in the same decision as the magazine.
Rejects set the practical limit more often than the feed rate does. A magazine that sets aside one pallet in twenty produces a steady stream of unfit pallets that must go somewhere. If the reject lane is a hand lift out of the machine, the operator feeding the line has been handed a second task. Measure the reject rate on your real pallet pool before choosing a machine.
The rhythm also reaches the pallet store and the pool account. A dispenser with a two-hour magazine needs a store big enough to feed it, and that floor serves no other purpose. Where pallets come from a pool, a line consuming a pallet every two minutes clears a bundle faster than a pooled delivery can replace it.
Pallet format, tolerance and material
The pallet decides whether an automatic magazine runs reliably. Each dispenser is built around a nominal footprint. In export glass the two seen most often are the 1200 by 800 mm pallet of the EUR and EPAL pool and the 1200 by 1000 mm format used across much of the container trade. North American lanes commonly use 1219 by 1016 mm, and an 1100 by 1100 mm format appears elsewhere.
Nominal dimensions belong to the ISO 3394 family, yet nominal is where the trouble starts. A magazine that separates pallets by their edges needs the edges it was set for, and a pool holding several generations of one nominal format does not supply them.
Three properties that matter more than nominal size
- Dimensional tolerance. The escapement, the mechanism that frees the bottom pallet, works on a clearance of a few millimetres. A pallet at the top of its width tolerance wedges while the one behind it drops through.
- Flatness and squareness. A bowed deck or out-of-square corners make the pallet sit at an angle. The angle repeats every cycle until the stacker places a layer on an uneven surface.
- Entry faces. A broken deck board, a missing bottom board or a nail standing proud defeats the separators. The unit either jams or releases two pallets together.
How the material changes the answer
Dry wood with sharp, clean edges is the easy case. Wood that has taken up moisture swells, gains weight and loses the crisp edge the separators depend on, so a pallet kept outdoors through a humid season feeds differently from the same model kept under cover.
Plastic neither swells nor sheds splinters. Its moulded feet and its flex under load alter the support geometry, though, and some magazines need a different separator profile for it. Pressed-wood and moulded pallets act almost like a solid block and often feed well. Corrugated and paper pallets are light enough to be lifted as a bundle and usually run on a different handling principle.
If more than one pallet model runs on the same line, expect either a change part between models or a second magazine. Put that cost in the comparison at the start. It should not surface during the commissioning visit.
Pallet types compared by magazine behaviour
Find the row matching your pallet pool and treat the jam column as a commissioning checklist. Capacities vary with bundle stack height and the mechanical design of the dispenser.
| Pallet type | Typical charge | Feed mechanism | Autonomy in practice | Usual jam cause | Effect at the stacking station |
|---|---|---|---|---|---|
| Wood, 1200 by 800 mm (EUR and EPAL pool) | Roughly fifteen to twenty pallets | Chain or fork escapement working from below; side guides at nominal width | Long. Uniform format in standard bundles lets refills fall between shifts | A corner repair, or a replacement bottom board proud of the deck, blocking the separator finger | Most predictable case and the one most magazines are designed around; stacking pattern barely affected |
| Wood, 1200 by 1000 mm export format | Roughly twelve to eighteen pallets | Chain escapement with adjustable guides, or a lifting fork that raises the stack and lowers one pallet at a time | Medium, dropping when several suppliers share a pool and bundle heights differ | A squareness fault leaving the pallet diagonal, so the escapement meets an edge instead of a face | The footprint most loading plans assume, so container arithmetic is unchanged; risk stays at the magazine |
| Wood, 1219 by 1016 mm North American format | Roughly ten to fifteen pallets | Wider guides and a heavier escapement, since the pallet overhangs a metric magazine | Shorter per charge: fewer fit the floor area and the format is scarcer locally | Metric and imperial pallets arriving mixed under one description | Alters the container floor geometry, so dispenser model and loading plan change together |
| Plastic, one moulding | Roughly fifteen to twenty-five pallets | Separator profile matched to the moulded foot recess | Long and consistent; no humidity swelling, repeatable stack height | A light-duty moulding flexing so the bottom pallet bows under the stack | Very stable placement with no splinters or loose nails near product; heavier magazine floor load for the same stack |
| Pressed-wood or moulded | Roughly twenty pallets or more | Simple chain escapement; the pallet is a rigid slab with straight edges | Long, provided there is a single supplier | Corner impact that chips away the straight face | Consistent deck height helps the palletizer hold its setting; check load rating for a heavy filled load |
| Corrugated or paper | Roughly twenty-five to forty units | Bundle handling instead of single-pallet escapement | Very long counted in units, shorter counted in weight carried | Moisture softening the stack edge so the separator tears a unit | Suited to empty bottle or light carton lines more than heavy filled pallets |
| Reused or repaired solid wood | Roughly eight to fifteen pallets, depending on condition | Wide tolerance window plus a mechanical double-feed check | Shortest and most variable; the mix shifts with each delivery | Double feed, with the first layer built on a pallet that is not on the floor | The main reason plants fit a detection sensor at the discharge |
An out-of-tolerance pallet gets rejected somewhere. At the magazine the rejection costs a few seconds. At the stacking head it costs a layer of product.
Hand-fed, semi-automatic or fully automatic supply
These are three operating models, each failing differently outside its range. The threshold between them is not annual tonnage. It is the pallets per hour the station must sustain and the minutes of autonomy the plant needs, both converted into operator minutes per shift before the options are compared.
| Method | What the operator does | Strength | Limit |
|---|---|---|---|
| Hand-loaded | Takes each pallet from a floor bundle and places it on the palletizing position | No tooling, no changeover and unlimited tolerance, since a person can see an unfit pallet | Someone must attend every pallet change, so the station cannot run through a break and pallet supply paces the line |
| Semi-automatic | Loads the magazine and clears rejects; release is by button or palletizer signal | Removes the carrying and placing and makes pallet position repeatable | The station is still not autonomous |
| Fully automatic | Nothing routine. The unit charges itself from a bundle, separates, places, confirms and reports rejects | Pallet supply runs through a shift alongside an automatic palletizer | Rigid: one format, one stack height, one condition window, and anything outside it is a stop |
Hand loading suits a short or intermittent run with a mixed pool, where a magazine would sit half empty most of its life. It stops being adequate when the station must survive a break, when the pallet rate keeps an operator there continuously, or when the filled unit is heavy enough to make placing a pallet by hand a handling risk. The crossing point moves with the pallet rate and with the number of format changes per week.
Most export packing lines settle on semi-automatic supply when the pool is mixed or the volume does not justify a magazine large enough to run unattended. Fully automatic supply is the correct purchase where the palletizer is itself automatic and the line cannot stop for a pallet.
Five fault causes to check before buying
Dispenser stops are seldom random. Five causes account for most of them, and each can be seen in a plant before any machine is ordered.
- Double feed. Two pallets release together and the stack ends up one pallet too high, where it can foul the wrap hood, the container door or the stacker gantry. The usual root is a separator profile that cannot cope with a swollen, chipped or repaired deck edge. The remedy is a wider tolerance window or a mechanical check that exactly one pallet has left.
- Misalignment. A pallet out of square in the magazine arrives skewed, the first layer overhangs an edge and its outer units lose support. Look for a bent side guide or a bowed board, and check that the magazine is level: a floor draining towards one corner mimics a warped pallet exactly.
- Structural failure of the pallet. A fork tine through the wrong opening, a bundle dropped a few centimetres at the truck, or a wet season outdoors leaves a pallet past its job, and no dispenser detects that. Write a condition clause into the supply arrangement: sound, dry, level and free of protrusions, with broken, missing or proud boards rejected at the gate.
- Contamination. Loose nails, splinters, dust and board fragments ride into the packing hall with the pallet. On a food or beverage line that is a foreign body risk. A pallet repaired with staples or loose nails has no place near an open container.
- Timing against the stacking head. Released late, the pallet is still moving when the layer lands. Released early, it leaves a gap the layer-forming pusher must bridge. Neither breaks bottles outright, but both let the layer settle unevenly, and that is what leans in transit. A handshake signal confirming the pallet in position before the head descends removes the fault. Ask for it on the quotation.
Interfaces with the palletizer, the hood and the pallet store
A dispenser never stands alone. Stacking itself, meaning layer forming, head tooling and patterns, is covered in our guide to glass bottle palletizers, and the written sign-off of a layer pattern before a program is released sits under pallet pattern approval. The dispenser's task ends once a sound pallet stands square under the head.
Floor drop, chain conveyor or shuttle
Discharge height, position tolerance and orientation form one specification shared with the palletizer, so settle the interface together with the palletizer supplier.
- Floor drop. The pallet must land within its own tolerance because nothing downstream squares it. Floor condition and the drop mechanism both count.
- Chain conveyor. Guides square the pallet before the first layer, so a slight offset is tolerable, but the handover has to be clean.
- Shuttle to a fixed position. The most accurate of the three and the least forgiving of a pallet that is out of square.
Why the hood needs double-feed detection
Once loaded, the pallet moves on to wrapping or hooding, which we describe under stretch hooding and load securing. The link back to the dispenser is height. A load built on two pallets is one pallet too tall for the hood, and a hooding machine meeting an oversize load either stops or crushes it. On any line with a hood, detection at the dispenser discharge is the least expensive protection for the equipment after it.
The pallet store is usually the weak link
A magazine is charged from a bundle, and the bundle comes from a pallet supplier or a pool. The run between store and magazine has to fit inside the machine's autonomy: the dispenser cannot outlast its magazine, and the magazine cannot be refilled faster than the store can be reached.
Two neighbouring loops work differently. Where the carrier is a returnable crate, cleaning and counting come into play, as set out in our notes on returnable bottle crates. At the receiving plant, breaking down the loaded pallet and returning empties to circulation is the job of a glass bottle depalletizer.
Quarantine treatment and IPPC marking of the timber are a compliance matter, separate from the mechanics here. A dispenser moves pallets; the rules on wood packaging and fumigation for export govern what may be marked on them. We assume a compliant pallet is what enters the magazine.
Who supplies and owns the pallet under each trade term
Incoterms leave the mechanics untouched. They decide who buys the pallets going into the magazine, who owns them once the container is closed and who pays for replacements.
| Term | Position on pallets | Point to check |
|---|---|---|
| EXW | Goods are taken at the supplier's premises, so pallet supply, the pallet and loading sit on the buyer's side from the start | The buyer must specify the format the supplier's dispenser is set for |
| FOB | The seller delivers on board and the pallet normally leaves the country with the goods | A pooled account is hardest to balance here; a one-way pallet is often the practical choice |
| CIF and CIP | The seller arranges and pays carriage to a named place | Carriage to the destination port covers neither unloading at the buyer's plant nor return or disposal of pallets |
| DDP | Delivery can extend to the buyer's premises | Pallet handling, unloading and pallet removal become part of what was bought |
Under any term, write three items into the purchase order instead of settling them at the dock: the pallet format and condition standard the dispenser is set for, who supplies and pays for pallets, and who bears the cost of pallets rejected at the magazine. The last is left out most often and argued over most, because a reject rate that looks trivial to a pallet supplier can stop a filling plant for a shift.
Cost items to compare per pallet fed
Arguments about pallet feeding tend to fix on the machine, which is the smallest part. Express five items per pallet fed so that two options can be judged on one basis. Actual figures are quoted per project and follow the machine, the pallet and the volume.
- The machine. Spread it over the pallets handled in a year, including separator wear parts, side guides and change parts.
- Labour. Count operator minutes per pallet: magazine loading, reject clearing and recovery after a jam, not just time spent watching.
- The pallet pool. The pallets, the rejected ones and the floor the store takes up.
- Downtime. Hardest to see and usually the largest. A stopped stacking station backs up through the closing machine to the filler, and stopping and restarting a filler costs more than the pallets it waited for.
- Container consequence. A dispenser built around the format the loading plan assumes preserves the load. One that forces a format change alters the footprint, the pallets per container and the freight per unit.
For that last reason, freeze the pallet format before buying the dispenser or drawing the loading plan, and check the two documents against each other. Moving from 1200 by 1000 mm to 1219 by 1016 mm changes the container floor geometry, and deck height takes a slice out of every tier in the box.
What to send for a dispenser recommendation
Three groups of information let us return a recommendation that a plant engineer, a pallet supplier and a freight forwarder can all work from.
- Peak volume. Units per hour and pallets per hour at the stacking station, plus the number of pallet format changes per week.
- The pallet. Exact footprint, material, stack height per bundle, the condition standard applied, and whether the pool is one-way, pooled or returnable.
- The stacking method. Hand feeding, a semi-automatic unit or an automatic palletizer, and the machine immediately after the stacking position.
Add the minutes of autonomy wanted between refills and the floor space available for the pallet store. From these we can set out magazine capacity in minutes, the feed method and separator profile for your pallet, the double-feed detection required, any change parts for a second format, the handshake with palletizer and hood, and a cost comparison per pallet fed.
Questions buyers ask about pallet dispensers
Can one dispenser handle several pallet formats?
Only with change parts or a second magazine. Guides set for 1200 by 1000 mm cannot straddle a 1219 by 1016 mm pallet, and a magazine set for a wooden deck will not reliably separate a moulded pallet with a different foot profile. Plants that truly run two formats normally use a quick-change guide kit where the formats share a deck height, or two magazines feeding one station by shuttle.
How do we stop pallets jamming in the magazine?
Mostly by controlling the pallet, since the pallet is nearly always the cause. Apply a written condition standard at the gate so a swollen edge, a proud repair, a chipped corner or a raised nail never reaches the separators. On the machine, a wider tolerance window with confirmation that a single pallet has left deals with double feeds, and a level magazine on a good floor deals with alignment faults.
Does an automatic dispenser change the container load?
Not directly. It can do so indirectly, because the machine is built around one pallet format and that format fixes the footprint the loading plan works with. If the dispenser forces a format change, the pallets per box and the freight per unit change with it, so the format should be frozen before either is ordered.
Is a bigger magazine always better?
No. A larger magazine helps only when the replenishment route is long enough for the extra minutes to matter, and it needs a larger pallet store behind it. If rejects have to be lifted out by hand, the reject rate will cap the station's autonomy well before the magazine runs empty.