When I first started looking into self-erecting cranes for a project back in 2021, I made some bad assumptions. I thought all tower cranes were basically the same—just a big metal stick that lifts things. Seven months and one budget overrun later, I learned the hard way that choosing the right crane, especially a Potain self-erecting model, is more about the logistics of your site than the spec sheet.
This article answers the most common questions I get from buyers—and a few they should be asking but often aren't.
1. What exactly is a Potain self-erecting crane?
It's a tower crane that can set itself up without needing a separate mobile crane for assembly. Think of it as the all-in-one option for smaller or medium-sized jobs. The MCT 85 is a popular example—it's a self-erecting model that can handle residential and light commercial work. (I should add that 'self-erecting' doesn't mean zero setup time—it still needs a crew and a day or two on site.)
2. When should I choose a self-erecting crane over a traditional tower crane?
- When space is tight – Urban infill sites often don't have room for a big mobile crane to assemble a traditional tower.
- When you need mobility – Self-erecting cranes can be moved between sites relatively quickly.
- When the budget is moderate – You're not paying for a massive mobile crane and a dedicated erection crew.
But here's the trade-off: they have a smaller lifting capacity and reach. If you're building a high-rise with heavy prefab panels, you probably need a bigger Potain tower crane. The MCT 85 is great for 4-6 story buildings.
3. How does the Potain MCT 85 compare to other self-erecting models?
What sets the MCT 85 apart for me is the jib flexibility. It can luff (adjust the angle of the boom) and telescope out, which means it can work in tight spaces where a fixed-jib crane can't reach. Its maximum capacity is 4 tonnes (8,800 lbs), and the max tip load is 1 tonne. If I remember correctly, the jib length goes up to about 35 meters.
4. What about costs—both upfront and hidden?
Let's be blunt. Self-erecting cranes aren't cheap used equipment. A new Potain MCT 85 will run you somewhere in the ballpark of $200,000 to $350,000 depending on options and the dealer. But the real cost is in the hidden items:
- Foundation work: The base can cost $10,000 to $25,000 to install properly.
- Transport: Moving it between sites isn't free—figure $3,000 to $8,000 per move depending on distance.
- Maintenance: Self-erecting cranes have more hydraulic and mechanical components that need servicing. Annual costs can be 3-5% of the purchase price.
What I keep coming back to is that a well-maintained Potain holds resale value better than most competitors. That matters when you're looking at total cost of ownership over 5 years.
5. Can I use a Potain self-erecting crane for residential construction?
Absolutely. This is actually their sweet spot. For townhouse developments, apartment buildings up to 6 stories, and even large custom homes, it's often the best tool for the job. (Oh, and it's common to see them on church and school projects too.) But don't use it on a project where you need to lift heavy equipment like an engine hoist or a bulldozer—that's a different class of machine altogether.
6. What's the learning curve for operators and site crews?
Here's something most sales reps don't tell you: training matters more than you think. The remote control operation takes a week to learn and a month to master. If I had to guess, about 30% of the efficiency gains from a self-erecting crane get wasted in the first three months because the crew hasn't dialed in the choreography. Spend the money on a qualified trainer for a day. It pays for itself.
7. What should I look for when buying a used Potain self-erecting crane?
If you're going the used route (and plenty of smart buyers do), check these things first:
- Service history: Look for full records. A crane with sketchy maintenance is a liability.
- Hydraulic system condition: Leaks or worn seals are expensive to fix.
- Control system updates: Older models might have outdated electronics. Potain has good support, but parts availability matters.
- Jib telescoping action: This is a high-wear item. Make sure it extends and retracts smoothly.
When I was evaluating a used MCT 85 for a client, we found one that looked great cosmetically but had a worn slew ring. The repair quote was $18,000. You need to know what you're looking at.
Quick comparison: Bulldozer vs Excavator vs Self-Erecting Crane
People sometimes mix up these machines. They're not interchangeable. A dozer pushes dirt and grades; an excavator digs and loads. But the Potain self-erecting crane? It lifts materials vertically and places them precisely on upper floors. Each machine has its role, and the dozer vs excavator debate is separate from crane selection.
