Static, dynamic and racking load, in plain words
Rackable 48 x 40 example
- Static load
- 10,000 lb
- Dynamic load
- 4,000 lb
- Racking load
- 2,000 lb (edge rack)
- Source
- Rehrig Pacific 40 x 48 rackable
- Rule
- Racking is usually lowest
Static load is what the bottom pallet carries at rest in a stack. Dynamic load is what the pallet carries while it moves. Racking load is what it carries across an open rack span. Static is the highest of the three, dynamic is always lower than static, and racking is often the lowest.
Read them in that order and read the lowest one that applies to the way you use the pallet. That one sets what the pallet can do, whatever the other two say.
Each rating, and the handling it matches
- Static load
- What the bottom pallet carries at rest in a stack; the highest rating and the one that sets stacking height.
- Dynamic load
- What the pallet carries while a forklift, jack or conveyor moves it; always lower than static.
- Racking load
- Weight on a pallet bridging an open rack span; usually the lowest rating, and only rackable designs carry one.
Pallet capacities are issued by the manufacturer from calculation and lab or field tests, and they assume an evenly distributed load. Uneven loads, bridging loads and point loads reduce what a pallet can safely carry. Freezing can make some materials brittle and reduce performance.
Real figures, side by side
| Pallet | Static | Dynamic | Racking |
|---|---|---|---|
| Rehrig 40 x 48 standard-duty nestable | 10,000 lb | 3,000 lb | no rack rating on this spec |
| Rehrig 40 x 48 rackable | 10,000 lb | 4,000 lb | 2,000 lb edge rack |
| Nelson 48 x 40 x 4.8 in | 10,500 lb | 3,100 lb | 2,700 lb |
| PHS 48 x 48 stackable (STK 207) | 30,000 lb | 4,000 lb | none listed |
| PHS 56 x 44 beverage (STK 285) | 30,000 lb | 2,500 lb | none listed |
| PHS 48 x 32 stackable (STK 783) | 15,000 lb | 3,500 lb | none listed |
A 30,000 lb static rating is not a 30,000 lb forklift rating. The same pallets carry 2,500 to 4,000 lb when moved. Match each number to the job it describes.
Read a sheet in four steps
- Find the handling that is hardest on the pallet: racked, stacked, conveyed or forklifted.
- Read the rating for that handling.
- Divide the load per pallet by the rating and leave a margin for uneven loads.
- If the rating you need is not on the sheet, the pallet is not rated for it.
Published ratings, model by model
| Model | Static | Dynamic | Racking |
|---|---|---|---|
| Rehrig 40 x 48 standard-duty nestable | 10,000 lb | 3,000 lb | none listed |
| Rehrig 40 x 48 heavy-duty nestable | 10,000 lb | 3,500 lb | none listed |
| Rehrig 40 x 48 rackable | 10,000 lb | 4,000 lb | 2,000 lb edge rack |
| Nelson 48 x 40 x 4.8 in | 10,500 lb | 3,100 lb | 2,700 lb |
| Nelson used 48 x 40 x 6.3 in HDPE | 30,000 lb | 5,000 lb | 2,200 lb |
| PHS STK 207, 48 x 48 | 30,000 lb | 4,000 lb | none listed |
Every row obeys the rule: static is the highest, dynamic is lower, and racking, where it exists, is lowest or close to it. Capacities are issued by the manufacturer from calculation and from laboratory or field tests, and they assume an evenly distributed load. A load that sits on one corner of the deck is not the load the rating was written for.
A three-step way to choose
- Take the heaviest stack your floor or trailer holds and read the static rating from it.
- Take the heaviest single pallet a lift truck or conveyor moves and read the dynamic rating.
- Only if the pallet sits on beams, read the racking rating, and check the beam span the maker assumed.
A model that does not carry a racking rating is not a rackable pallet, whatever its other ratings say.
A worked way to use the three numbers
Write down the heaviest unit load in pounds. Then ask the three questions in order: does it sit on the floor, is it carried by a lift truck, and does it sit in a rack. For each yes, the matching rating on the pallet must be equal to or above the load. The rating with the lowest number decides where the pallet may be used, so a pallet with a high static but low racking figure is a floor pallet.
Common mistakes with the three ratings
- Reading the static figure as the figure for everything.
- Forgetting that a rack beam span changes the load a pallet can hold.
- Assuming the rating applies at every temperature, when the maker's figure is stated at a test condition.
- Comparing two makers' numbers without checking that the tests match.
From request to trailer
- Send the ship-to. A delivery ZIP, a footprint and a quantity, in pallets or in trailers. If you do not know a rating, describe the load.
- We match a model. We pick a maker and model whose published static, dynamic and racking load fit the load, and say so when only one maker fits.
- You get a count. The quote carries the maker's own per-trailer figure where one is published, and says plainly where none is.
- Papers and delivery. For food or pharma we attach the resin and colourant documents. A standing supply repeats the same line on every order.
What a complete request carries
- The footprint, in inches or millimetres, and whether it is fixed by a rack bay or a container.
- How many pallets, or how many 53 ft trailers.
- The ratings the load needs: static for the stack, dynamic for the move, racking only if the pallet sits on beams.
- Food, pharma, chemical, automotive, warehouse or export use, which sets the papers.
- One load now, or a standing supply with the same line on every order.
- Where it goes and when, and anything marked on the pallet: colour, logo, RFID tag.
Terms on this page
- Nestable
- Empty pallets stack inside one another, cutting empty storage space by up to 75 percent.
- HDPE
- High-density polyethylene, resin code 2. The most common resin in plastic pallets; tough and moisture resistant.
- PP
- Polypropylene. More rigid than HDPE and better with heat and harsh chemicals; used where rack stiffness matters.
- Edge rack
- Resting on the rack beams by the pallet's edges only, with no support in the middle.
- Stackable
- Loaded pallets can sit on top of each other, up to the static rating.
- Rackable
- Rated to sit on rack beams, with a stated racking load.
- Recycled-content pallet
- A pallet moulded partly or wholly from post-industrial or post-consumer resin.
- Closed loop
- Pallets that travel between known sites and come back, so they are never lost to a downstream user.
- 4-way entry
- Forks or a jack can enter from all four sides.
- Nest ratio
- How many empty pallets fit in the height of one.
Questions at the dock
Why is dynamic load lower than static?
Movement adds shock and uneven support. The pallet is carried on forks or rollers, not on a flat floor.
Which rating matters most?
The lowest one that applies to how you handle the pallet. For a racked pallet it is usually racking load.
Keep reading
Last reviewed 2026-11-12.