Push-back racking

Push-back racking loads pallets onto inclined nested carts from a single aisle: each new pallet pushes the one behind it further back, and gravity brings the front pallet forward again as they're unloaded. It sits between double-deep and drive-in on density, without a forklift ever entering the lane.

Last updated 2026-08-23

Where it sits on the axis

Push-back trades selectivity for density in a specific, mechanical way. A forklift always works from the front of the lane — it never drives inside the structure the way drive-in requires — but the lane itself holds two to typically four or five pallets deep on nested carts running down a slight incline. That lands push-back between double-deep and drive-in on the density line: more depth than double-deep gives you, less than a full drive-in bay, with an access pattern that stays entirely at the aisle face. Whether that trade beats going all the way to drive-in for a given site is really a question of how much depth you need against how much in-lane risk you're prepared to accept — the two systems compared directly sets that out.

How the mechanism actually works

Each pallet sits on its own cart. Push a new pallet in and it shoves the whole stack back one position on the rails; pull the front pallet out and gravity lets the next cart roll forward to take its place. Nothing needs powered assistance — the incline does the work — which is the main thing that separates push-back from shuttle racking, where a powered cart does the same job under remote control.

LIFO, and why that matters here

Push-back is LIFO, the same as drive-in and double-deep: the last pallet pushed in is the first one pulled back out. Unlike drive-through or pallet flow, there's no way to get FIFO out of a push-back lane — the loading and unloading happen from the same end by definition. Any SKU that needs strict first-in-first-out rotation belongs somewhere else in this silo; push-back suits stock where LIFO is a fair trade for the density and the single-aisle convenience.

The stock profile it suits

Push-back fits a mid-range SKU profile: more pallets per SKU than a pure selective or double-deep layout justifies, but not so many that dedicating a full drive-in lane to one product makes sense. It also suits sites where building access only allows a single working aisle — push-back gets meaningful density without needing the second face that drive-through demands.

  • Moderate pallets per SKU — deeper than double-deep, shallower than a typical drive-in run
  • Single-aisle access only
  • LIFO rotation acceptable for the product

What it costs you

Push-back carries more moving parts than any static racking in this silo — rails, carts, wheels — which means more to check at each racking inspection and more that can wear or jam over time compared with a welded selective or drive-in frame. It's also more expensive per position than double-deep for a similar depth, because you're paying for the cart mechanism as well as the steel. The payoff is real: a forklift operator never leaves the aisle face, which removes the in-lane manoeuvring risk that makes drive-in unforgiving, while still getting several pallets deep out of a single aisle.

Push-back sits between double-deep and drive-in on depth, without putting the truck inside the rack.
SystemTypical depth per laneRotationForklift enters lane?
Double-deep2 palletsLIFO (per pair)Partially — deep-reach forks only
Push-back2–5 palletsLIFONo — stays at aisle face
Drive-inMany palletsLIFOYes — drives inside the structure

Common questions

Is push-back racking FIFO or LIFO?
LIFO. Pallets load and unload from the same end of the lane, so the last one in is always the first one out.
How is push-back different from drive-in racking?
Push-back keeps the forklift at the aisle face and lets nested, inclined carts move the pallets; drive-in requires the forklift to drive inside the rack structure itself. Push-back typically holds fewer pallets deep than a drive-in lane.
How is push-back different from shuttle racking?
Push-back moves pallets with gravity and nested carts, no power involved. Shuttle racking uses a powered, remote-controlled cart to do a similar job, usually across greater lane depths.
Does push-back racking need special maintenance?
It has more moving parts than static racking — carts, wheels and rails — so it needs those mechanical components checked as well as the usual frame and beam condition covered in a general racking inspection.

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