Dorner Belts vs. Custom Conveyor Lines: A Cost Controller’s Perspective

When I first started managing our plant’s conveyor budget, I assumed the lowest quote was always the right call. Three years and two expensive retrofits later, I stopped assuming. This is a direct comparison between Dorner modular conveyor systems and a custom-built line from a local fabricator. I’m not a brand cheerleader. I’m the person who approves POs, tracks maintenance spend, and asks the boring questions that usually get ignored.

Full disclosure: Dorner didn’t pay for this. Per FTC guidelines, if that ever changes, I’ll say so before the first line. That’s not legal talk—it’s just how you should read any equipment comparison.

Why I’m comparing Dorner to custom conveyor lines

Our plant used to run one product all year. That changed. We now switch between cartons, light assemblies, and some label work with a lot of adhesive. The old welded line handled it, but every changeover meant cutting, welding, and at least a shift of downtime.

When we needed a second line, I got two quotes. One was a custom steel line from a local fabricator: $38,000. The other was a Dorner 2200 series modular system with two transfers and a white belt: $44,500. If you only look at the first number, you’d choose the custom line. I almost signed the PO. Then I built a simple spreadsheet.

I’ve managed our maintenance and MRO budget for six years—about $180,000 a year. I’ve compared quotes from 30+ vendors. This wasn’t my first capital equipment decision, but it was the one that made me change how I compare options.

Dimension 1: Upfront price vs. total cost of ownership

Here’s the thing about equipment quotes: the unit price is the smallest part of the story.

Custom line quote: $38,000. Add installation labor ($4,800), rigging ($1,900), controls wiring ($3,200), and a safety gate the fabricator left out but plant management required ($1,700). Real total: about $49,600.

Dorner quote: $44,500. Because the modules arrived pre-assembled and prewired, our maintenance crew installed it in three days. We hired a local electrician for one day at $900. Total: about $45,400.

So the option that looked cheaper cost $4,200 more. That’s the kind of difference that hides in fine print. I’ve been tracking every invoice in our cost system for six years, and this pattern shows up often enough that I no longer trust a quote until I’ve added the extras.

I kept going back and forth on the custom option. The upside was saving $6,500 upfront. The risk was an 8-week lead time and a 9-day install. I kept asking myself if $6,500 was worth two extra weeks of lost production. Once I put a number on the downtime, the answer was obvious.

My TCO model for capital equipment includes:

1. Purchase price
2. Installation labor and rigging
3. Controls integration
4. Lost production during install
5. First-year maintenance and spare parts

Conclusion here: Dorner won on TCO, but only because I added up the installation items. If you’re not going to do that, you’re not comparing options, you’re just comparing price tags.

Dimension 2: Installation time and production downtime

I’ll be honest: downtime is the number most people don’t put in a quote. But it’s the one that hits the P&L.

The custom fabricator told us 9 days on site. The Dorner system took 3 days. Our line runs two shifts, and every day of lost production costs roughly $2,800 in overhead and burden. That’s a $16,800 swing against the custom quote.

The controls work was the other surprise. With the custom line, the fabricator’s electrician had to wire everything on site, which meant shutting down adjacent equipment. With the modular system, the zones came with standard connectors. It felt more like assembling furniture than rebuilding the plant.

Conclusion: If your plant can’t absorb downtime, modular install is a big advantage.

Dimension 3: Reconfiguration when product mix changes

This is where my initial assumption flipped. I used to think a custom-built line was the most flexible option. It’s custom, right? Wrong, if you’re talking about future changes.

When we added a labeler six months later, the custom line needed new brackets welded on and a repaint. That took two days and $1,400. The Dorner system took about four hours. We unbolted a four-foot section, inserted a powered roller section, and reconnected the air and cables. No welding, no grinding, no paint.

There was also a communication failure early on. I told the custom fabricator “we need flexibility.” They heard “make the frame bigger.” We were using the same word but describing different things. If you’re buying any conveyor system, say “modular” if that’s what you mean. Or better, ask for a demo where you physically reconfigure the line.

Conclusion: For a plant with changing SKUs, modular beat custom. That surprised me.

Dimension 4: Spare parts, repairs, and vendor support

I expected modular parts to be overpriced proprietary everything. Some are. But Dorner’s 2200 series uses standard gear motors and fasteners on most drive ends. Our maintenance team rebuilt a drive end from parts already in the crib, which saved us a ton of time and two emergency orders in the first year.

The white belt version also handled label adhesive better than the old black rubber belt. I didn’t expect that to be a line-item win, but it meant fewer stoppages for cleaning. Visual inspection got easier too, because you can actually see residue on a white belt.

Support was another useful difference. The local fabricator was available if you called twice. Dorner’s application team answered on the first call and walked us through the load limits for the transfer. That mattered when we had a jam before a customer audit.

Conclusion: Parts aren’t as scary as I thought, and the support made a difference in our first few months.

What about the heavy stuff?

I don’t want to make this one-sided. For a line that runs the same heavy steel part for ten years, a custom welded system could still make sense. Dorner’s modular frames are strong, but they’re not designed for every impact load. We use ours for cartons and light assemblies, not stamped sheet metal.

If you need huge loads, extreme temperatures, or a non-standard width, get an engineering review. Don’t assume modular is the answer just because it made sense for us.

What changed in the last five years

The industry is moving toward modular, and it’s not because modular is trendy. It’s because product lifecycles are shorter. What was the right conveyor in 2020 may not be the right one in 2025. The fundamentals—belt quality, load capacity, maintainability—haven’t changed. The execution has.

Five years ago, most of our vendors would have pushed a custom welded line without asking about future SKUs. Now, the first question should be: what do you think you’ll be running three years from now? That question changes the comparison.

Bottom line: Which should you buy?

Choose Dorner if your product mix changes, if you can’t tolerate long installs, if you don’t have a full machine shop on staff, or if you want to add stations later. Choose a custom line if you have a fixed product for the life of the machine, if you need a specialist build, or if your maintenance team is already comfortable with welded structures.

One last thing: the best decision I made wasn’t choosing Dorner over custom. It was building a simple TCO spreadsheet and actually using it. The “cheap” quote turned out to be the expensive one, and I almost signed because I was comparing the wrong numbers.

If you’re in a similar comparison, do the math before you convince yourself the lower quote is better. That’s what I’d tell my younger self.