I've Ordered 60+ Dorner Conveyors. Here's What I'd Check Before You Buy One

Dorner makes very good conveyors. That's not a reason to buy one.

The reason to buy one is everything around the hardware: the configurator, the CAD files, the application engineers in Hartland, Wisconsin who actually answer questions, and the fact that the product usually behaves the way the documentation says it will. After roughly 60 Dorner orders over six years, my honest conclusion is this: they're an excellent fit for discrete assembly, packaging, and washdown lines—and they're the wrong brand for heavy pallets, raw bulk material, or any application where product slams into the belt.

If you're in a hurry, that's the whole article. Everything below is what I wish someone had forced me to read before I spent an embarrassing amount of money learning it myself.

Why You Should Listen to Me (and Why You Shouldn't Take My Word for It)

I'm an integration engineer in the upper Midwest, not a Dorner employee and not a distributor. Since 2018, I've specified conveyors for food packaging lines, battery-component assembly, and light material handling. Dorner is one of three conveyor brands on our approved list, and it's the one I order most often.

I've also made mistakes that totaled somewhere north of $30,000 in wasted budget—wrong drives, wrong belt material, a motor mounted on the wrong end of a conveyor, and at least one roller conveyor selected from a picture instead of a load calculation. I documented all of it. Now I maintain our team's pre-order checklist, and that checklist has caught 47 potential errors in the last 18 months. This article is basically that checklist, with the expensive stories attached.

Mistake #1: I Sized the Conveyor for the Product, Not for the Jam

September 2022. We were adding a 10-foot section to a case-packaging line. The cartons weighed 12 pounds, and in normal flow there were maybe five cartons on that section at any moment—about 60 pounds. The Dorner section we picked had a published moving load capacity of 100 pounds. I did the math, nodded, and approved it.

What I didn't account for was the downstream machine stopping.

When the case packer jammed, the conveyor kept running. Cartons piled up end to end. In about 40 seconds, there were 21 cartons sitting on that 10-foot section—252 pounds on a conveyor rated for 100 pounds of moving load. The gearmotor wasn't sized to break away and restart that kind of accumulation load, and it overheated. The line went down for four hours on a Friday night.

The fix cost about $2,800 and a weekend of commissioning. The Dorner rep had actually asked during the application review whether we needed accumulation. I said no because I was thinking about normal flow, not the worst case.

Here's the thing: always spec for the jam, not the ideal flow. If product can back up on a conveyor, the load is the total weight of every product that fits on that section, plus the torque needed to restart it. That number is usually three to five times higher than what you'd calculate from normal gaps.

What the Dorner Roller Conveyor Commercial Doesn't Show You

If you found this article because you watched a Dorner roller conveyor commercial, I get it. Those videos are clean, the product moves perfectly, and the whole thing looks simple. That's exactly what makes them dangerous.

The commercial doesn't show you the part where someone has to decide roller pitch, belt type, motor orientation, and side rail clearance. It doesn't show the application review call. And it definitely doesn't show the $1,900 mistake we made in 2021 when our team picked a roller conveyor based on a video and a photo, without checking which side the existing line fed from.

We ordered a perfectly good Dorner roller conveyor. It was just facing the wrong way. The motor was on the right side, but our infeed was on the right side too, which meant the product would have entered where the drive was. We discovered this during installation, not during the drawing review, because we skipped the drawing review.

That conveyor ended up being disassembled, flipped end-for-end, and re-installed with modified stands. The conveyor itself was fine. The process was not.

So if you're coming from a commercial or a trade show demo, slow down. Use the configurator. Look at the actual dimensional drawing. Send it to whoever is installing the line and ask one question: does this match the floor layout?

Mistake #2: I Trusted 'Same as Last Time'

In Q1 2024, I ordered a $3,900 Dorner conveyor section and approved it without opening the latest drawing. My logic was simple: it was the same model we'd ordered twice before, for almost the same application. What could change?

The answer: the gearmotor and the belt material had both been updated in Dorner's system since our last order. The motor was now a different frame size, and the belt had a different coefficient of friction. Neither change was bad—actually, both were improvements—but the motor housing didn't clear our existing guard, and the belt grabbed slightly harder on the accumulation zone. We caught both issues during startup, not before. That cost us a week of delays and a rush-fabricated motor guard.

They warned me about this in the application engineering notes. I didn't read them because I was confident. The conventional wisdom among engineers is that conveyor buying is boring and repeatable. My experience says it's exactly the repeatable orders that get you—because you stop paying attention.

Every order gets a fresh drawing review now. Every single one. Even if it's identical to last month's. Especially if it's identical to last month's.

The Checklist I Wish I'd Had From Day One

Here's what our team now runs before every Dorner order. It's not complicated. That's the point.

• Calculate the jam load. Take the heaviest product, pack it end-to-end along the full conveyor length, and add 30% for restart friction. That's your design number.
• Check the incline. Published capacity is usually for horizontal use. If the conveyor goes uphill, derate it and confirm the drive with the manufacturer.
• Verify motor orientation against the actual floor layout. Use the CAD model, not a photo, not a memory, not 'same as last time.'
• Confirm belt or roller material matches the environment: washdown chemicals, cardboard dust, oil, static-sensitive electronics. A cheap belt can ruin an expensive line.
• Ask about accumulation. If there's any possibility of product backing up, tell the Dorner application engineer. They'll size the drive and frame accordingly.
• Review the fresh drawing before every order. Components change. Your memory doesn't update automatically.

Since we started using this checklist, we've caught 47 issues during quote review. Most were small. A few would have been five-figure field modifications. Every single one was cheaper to fix in the office than on the plant floor.

When Dorner Is Not the Right Answer

I recommend Dorner often, and I mean it when I do. But honesty matters more than sounding like a fanboy.

If you're moving full pallets, heavy dies, or anything over a few hundred pounds with concentrated impact, Dorner probably isn't the right brand. A heavy-duty chain conveyor or a pallet-handling system from a specialist will serve you better. Same if you're conveying raw bulk material like crushed ore or aggregates in a mining environment—that's a completely different class of equipment, and pretending otherwise will end badly.

Dorner's sweet spot is small-to-medium unit loads moving at controlled speeds with repeatable positioning. If that's your application, they're genuinely hard to beat. If it's not, no conveyor brand will fix a bad fit.

Final Thought

There's something satisfying about watching a line run its first full shift without a single call to the maintenance guy. After six years and 60+ orders, those shifts happen more often now—not because we got smarter, but because we finally started asking the boring questions before buying the hardware.

Dorner didn't cause my mistakes. I caused my mistakes by treating conveyor selection as an afterthought. The equipment was never the unreliable part. My process was.

Fix the process, and the conveyor choice gets a lot easier.