Conventional palletizers

How conventional palletizers work: high-level vs. low-level, row and layer forming, aprons and hoists, rated speeds from real models, and when to pick one.

Updated October 2, 2026

A conventional palletizer builds each pallet one full layer at a time. It forms the layer from rows of cases, then sets the layer on the pallet. It uses pushers, belts, and a hoist instead of a robot arm. This guide explains high-level and low-level machines, how each part works, and the speeds makers publish.

All speeds here are maker ratings. Real output is lower once case size, pattern, and pallet changes come in.

High-level vs. low-level palletizers

The main split is the height where layers form.

A-B-C says its low-level 72 Series accepts cases from any level. It also says floor-level access points “eliminate the need for costly overhead platforms.”

In-line machines are a fast form of high-level palletizer. Columbia says in-line palletizers “use a continuous flow divider to guide products onto a layer-forming area.” Their infeed runs 110″ to 145″ high.

How layer forming works

Layer forming means building a full layer of cases before it goes on the pallet. The steps below use parts named in maker documents.

Infeed and spacing

Cases arrive on the infeed conveyor. A belt sets the gap between them. A-B-C uses an “Automatic infeed timing belt”. Columbia’s HL4200 has a “VFD-controlled pacer meter belt”. A VFD (variable frequency drive) controls motor speed.

Case turning

Many patterns need some cases turned 90 degrees. A-B-C uses a “Turning post and powered roller case orienter.” A case hits the post and spins as it passes. Columbia lists “Touchless turning” as an HL4200 option.

Row forming

Cases gather into a row on a row forming area. A pusher moves the full row sideways onto the layer area. Columbia says on its floor-level page that loads are “built by forming rows of product which become complete layers.”

Layer forming and squaring

Rows build up until the layer is full. Columbia’s HL4200 can form “layer gaps” side-to-side and front-to-back. A-B-C uses an “Electro-mechanical dual chain-driven layer pusher bar.” Its “self-adjusting layer retainer sweep bar” centers each layer, and “Layers are squared during pallet placement.”

Apron and stripper plate

The finished layer must move onto the pallet. On a high-level machine, it sits on an apron. Columbia’s HL4200 has a “bi-parting apron.” The two halves pull apart and the layer drops onto the pallet. A-B-C’s elevator table has a “tapered stripper plate.” In general, a stripper plate holds the layer in place while the table pulls back from under it.

Hoist or elevator

A hoist raises or lowers the pallet or the layer table. Columbia lists an “80 Pitch Hoist Chain” and “Automatic Hoist Protection Pins.” A-B-C uses a counterweighted elevator. It lists a “Maximum tier weight 650 lbs.” A tier is one layer.

Pallets, sheets, and discharge

A pallet dispenser feeds empty pallets. Give the supplier your pallet size, type, and condition range. Ask how the dispenser handles a broken pallet. See case palletizers for more on pallet quality. A sheet dispenser can add a slip sheet, tie sheet, or cap sheet between or on top of layers. Columbia lists a “Slip / Tie / Cap sheet dispenser” as an option. The full load exits on a conveyor. See discharge conveyors and stretch wrappers for the next steps.

Rated speeds by model

Specs were checked October 2, 2026. Layers per minute and cases per minute can’t be compared without your pattern. A layer of 10 cases at 3 layers per minute works out to 30 cases per minute. A layer of 5 cases works out to 15. That is a ceiling. It leaves out the time to swap pallets and place sheets. Ask the supplier for the rate across a full pallet, including the change. This list covers models with public ratings. It is not a ranking or a full market survey.

When conventional beats robotic

A conventional palletizer is often the better pick when:

• Rates are high. The highest ratings we found are on conventional and in-line machines. A robot cell such as the TopTier Value Palletizer is rated at “10-12 cases per minute.”
• Runs are long. A few SKUs on long runs make use of fixed, fast layer forming. A SKU (stock keeping unit) is one product in one pack size.
• Packages vary in type. Columbia says the HL6200 handles “cases, display packs, totes, trays, bundles, shrink film without pad” and more, “Requiring no modification.”
• Layers are heavy. A-B-C rates its layer table for tiers up to 650 lb.

A robot is often better for many SKUs, frequent changes, or several lines into one cell. Columbia’s FLD6200 tries to blend both. It claims “zero-time changeover” and “the precision movements of a robot.” Compare palletizer types and read when robotic beats conventional.

Maintenance points

We found no public maintenance schedule from these makers. Use the schedule in your machine’s manual. Maker documents point to these items:

• Hoist chain and protection pins. Columbia lists an “80 Pitch Hoist Chain” and “Automatic Hoist Protection Pins.” Inspect them on the manual’s schedule.
• Sensors. Columbia lists “Low Pallet Detection,” “Low Sheet Detection,” “Fallen Case Detection,” and “Smart Squeeze Technology for Misformed Layer Detection.” Keep sensors clean and aligned so faults stop the machine.
• Drives and belts. A-B-C says its counterweighted elevator “minimizes pull on the drive motor.” Check belts, chains, and pushers for wear.
• Built-in reminders. A-B-C says its “Preventive maintenance messages automatically flag periodic or routine tasks.”

Buying an older machine? See used palletizers for what to inspect.

Safety

Columbia lists “Interlocked Access Doors to Load Build Area,” “Full Height Light Curtains at Discharge,” and a “Category 3 Safety Electrical System” on the HL6200. Never bypass these guards, interlocks, or light curtains. OSHA 29 CFR 1910.212 requires machine guarding. Conventional palletizers are usually built to ANSI/PMMI B155.1, the US safety standard for packaging machinery.

Lock out and tag out before entering the machine or clearing a jam. OSHA 29 CFR 1910.147 covers servicing where “unexpected energization or start up” could cause injury. The rule also covers the “release of stored energy.” Lockout must cover air and gravity, not just power. A raised hoist, layer table, or elevator holds stored energy. Lower it or set the hoist pins or blocks the manual calls for before you work under it. Bleed the air lines. Tell affected workers before you lock out and again before restart. See lockout steps for palletizers.

Ready to compare quotes? Use the palletizer buying guide and the price ranges by type.