I handle purchasing for a mid-sized aggregates operation—roughly $1.5 million a year in equipment parts and wear items, across 30+ vendors. I took over the role in 2020, reporting to both operations and finance. It's a position that comes with built-in tension: keep the plant running, but also keep costs down.
Used Metso parts sit right in the middle of that tension. When someone offers a set of C160 jaw crusher liners at 40% below new, your first thought is "where do I sign?" I've been there. And I've seen that 40% discount turn into one of the most expensive purchasing decisions a quarry can make.
I understand the appeal. Budgets are tight. Operations wants throughput. Finance wants savings. A used set of Metso C160 jaw plates at roughly half the price of genuine replacements looks like the solution to everyone's problem. The parts are available now. The seller has photos. The condition looks pretty good.
But after five years of managing parts purchases, I've learned that the condition of a used part at the moment you buy it is almost irrelevant. What matters is what's happening inside the metal—and you can't see that in a photograph.
Most people assume used crusher parts fail because they're worn out. In my experience, that's rarely the actual story. Three deeper problems lurk beneath the surface.
Here's the uncomfortable truth: when you buy a used C160 jaw die from a dealer, you're buying a part whose previous life is a mystery. Was it hammering through high-silica granite? Did the crusher eat any tramp metal? Was the feed size consistently at the upper limit? Every one of those factors stresses the part in ways that leave no visible trace.
I remember one purchase in 2022. The used jaw plate looked perfect—no cracks, no unusual wear, just a couple of surface scuffs. It failed after one week. When we examined the fracture surface, the metallurgist found internal fatigue cracks that had been growing from the inside out. The part had clearly been subjected to severe impact loading in its previous life. Whether the seller knew it or not, that part was a ticking clock.
Even after choosing that particular seller—they had solid reviews and the photos looked right—I kept second-guessing. What if the service history wasn't accurate? The two weeks between ordering and delivery were stressful. Turns out, I was right to worry.
More and more used parts sellers are offering "reconditioned" components. They build up the worn surface with weld, re-machine it to spec, and resell it. In theory, that's great. In practice, it's risky.
Crusher wear parts are heat-treated for a reason. The quenching and tempering cycle gives them the right combination of hardness for wear resistance and toughness for impact. When you weld on the surface without precise pre-heat and post-weld treatment, you create a heat-affected zone that can be considerably more brittle than the original material. I've seen reconditioned parts that looked factory-new and failed within days.
To be fair, some reconditioning shops do excellent work. But you have no reliable way to verify their procedures without auditing them. And honestly, how many parts purchasers are doing that level of due diligence?
The third problem is one I see all the time. A team replaces one jaw die on their C160 with a used part at 60% remaining life, while the other side is down to 20%. The crushing geometry is now asymmetric. The C160's throughput drops, output gradation goes out of spec, and the "new" used part wears out faster than it should because it's carrying more load than the worn side.
Crusher wear parts are designed as matching sets. Mixing parts with different wear profiles is false economy—the kind that doesn't show up on day one but shows up clearly on the tonnage report at the end of the month.
Let's put real numbers on this. A set of new genuine Metso C160 jaw plates runs roughly $32,000 (based on a quote we received in Q1 2025; verify current pricing). A used set might cost $18,000. On paper, you just saved $14,000. Feels good.
Now imagine that used set fails after 15 days. Here's the actual math:
Total: $62,000—nearly double the cost of new genuine parts. And we haven't even touched secondary damage.
When a jaw plate fails catastrophically, it doesn't just wear out. It breaks. And broken manganese fragments can damage the pitman, score the main frame, or destroy the toggle plate. I've heard of operations needing six-figure repairs after a cheap part failed at full load. It's not a common outcome—but it's a risk you carry every hour you run a part of unknown history. And most purchasing managers don't factor that into the decision.
I still buy used Metso parts. I want to be clear on that. But I've stopped pretending the purchase price is the real cost.
Total cost = (part price + freight + installation labor) + (probability of failure × cost of failure)
The first half is easy to calculate. The second half is a judgment call—which is exactly the point. You need to assess the probability of failure honestly, based on what you know about the part's history, the seller's reputation, and how critical the equipment is to your operation.
Used parts have a legitimate place in a well-run maintenance program. In my experience, they're reasonable when:
For a primary crusher—the kind the whole plant depends on—I've stopped buying used parts of unknown history. The $14,000 savings isn't worth risking $32,000 in downtime plus potential crusher damage. That's not a moral position. It's just arithmetic.
There's something satisfying about a parts order that arrives on time, installs cleanly, and performs exactly as expected. After the stress of an unexpected breakdown, watching genuine Metso C160 parts run through a full wear cycle without drama—that's the payoff. It isn't the cheapest option on the purchase order. But it's the cheapest option on the year-end P&L, and that's what actually matters.
When I took over purchasing in 2020, I compared unit prices. Five years later, I compare ownership costs. That shift is the single biggest improvement I've made to how we buy parts—and it's saved us a lot more than any 40% discount ever did.
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