Metso C106 Jaw Crusher & Slurry Pump Wear Parts: Don't Make the Mistakes I Did

Your Application Decides the Right Metso Wear Part

I'll be straight with you: there's no single "best" wear part for a Metso C106 jaw crusher or a Metso slurry pump. Doesn't matter how good the salesman is or how fancy the brochure looks. I learned this the hard way — three times, actually. Each mistake cost me time, money, and a good chunk of my credibility with the plant manager.

If you're searching for "metso c106 jaw crusher" parts or trying to find that metso slurry pump handbook pdf, you're probably in one of three situations:

• Scenario A: You're a mine with high abrasion, high throughput demands — you need maximum wear life, and downtime is measured by the hour.
• Scenario B: You're an aggregate producer with variable feed material — you need flexibility more than raw longevity.
• Scenario C: You're a small operation with limited inventory budget — you need a part that'll work decently in multiple conditions, not a specialist.

What worked for Scenario A was a disaster for Scenario B. I know because I made that mistake in 2019. This article will walk you through each scenario, what I've learned from my screw-ups, and how to figure out which one you're in.

Scenario A: High Abrasion, High Throughput Operations

In my first year handling Metso equipment orders (2017), the largest mine on our roster needed jaw plates for their C106. They were crushing a highly abrasive quartzite. The answer seemed obvious: max manganese, hardest alloy.

I ordered a premium manganese steel (18% Mn, 2% Cr) set. The plates lasted. Really lasted. The customer was happy.

Then I tried that same logic for a copper mine with a similar C106. Those premium plates shattered within 400 hours. The issue? The copper ore had a different crushing index — high compressive strength, not just abrasion. The hard plates were too brittle for the impact. A 52-tonne crusher down for 11 hours. That invoice stung.

Here's what works in Scenario A:

• For the Metso C106 jaw: Go with a high manganese steel (12-14% Mn) with a balanced chromium content (around 1.2% Cr). But only if you've confirmed the feed material's compressive strength is below 250 MPa. I should have checked the ore properties. Period.
• For the Metso slurry pump: In high-abrasion slurries (e.g., tailings with high silica content), don't cheap out on the impeller and liner material. Standard rubber liners will fail. You need a high-chrome alloy or a premium polyurethane. I've got a process sheet I can share — it's saved us 40% on premature failures since 2022.
• Automation matters here: The Metso IC70C cone crusher automation isn't just for cones. If your C106 is part of a circuit with an HP cone, the IC70C's feed control can protect your jaw from overloading. We installed it on one site in Q1 2023. Reduced downtime by 27%. Not a typo.

A cost breakdown from a recent order (March 2025):

The premium jaw plate set for a C106 was approximately $4,800. The standard-grade set was about $3,600. The premium set lasted 5,000 hours. The standard grade might have lasted 2,800 hours in that application — and needed a change-out. Factor in a 10-hour change-out with a crew and crane, plus production loss, that $1,200 savings becomes a net loss.

Scenario B: Variable Feed Material in Aggregates

This is where I see most people trip up. You're an aggregate producer. Some days the feed is clean gravel. Next week, it's blasted rock with clay. The crusher sees everything. A specialist wear part optimised for one condition will fail unpredictably in another.

In September 2022, I recommended a heavy-duty jaw die for a C106 in an aggregate application. The customer was crushing hard granite one month and limestone the next. Hard die profile, aggressive tooth. Big mistake. The granite wore it well; the limestone left it looking like a cheese grater. We got the ware rate wrong, the customer blamed the part quality (fair), and I spent $890 on a rush replacement and a 1-week delay.

That's when I learned the rule: variable feed = versatile profile.

• For the C106 jaw crusher: Use a standard corrugated profile (one-piece jaw die) in medium manganese (12-14% Mn). Accept that you won't get the maximum life on any one material. You'll get consistent, predictable wear across the range. This is the "it's good enough" approach — and in aggregates, that's often a better business case. On a 1,500-tonne order where every batch varied, this approach saved us 23% in total cost versus specialist plates.
• For the Metso slurry pump: In aggregates processing (often with sand and gravel slurries), rubber or polyurethane liners are a better bet than high-chrome. They handle the variance in particle size and shape better. I saw a pump go 18 months with rubber liners where a comparable high-chrome setup had pitting after 9 months. Surprising? Yes. But I've documented it.

Scenario C: Small Operations with Limited Inventory Budget

If you're running one C106 crusher and can't carry multiple sets of wear parts, you need a "good enough for everything" solution. I processed an order for a customer in this exact position in 2023. 3,500-tonne capacity per month, one jaw crusher, one slurry pump. No spare sets.

My initial instinct (wrong again) was to suggest the most wear-resistant option. But the customer's feed material changed every third load. Premium set? Out of budget. Standard set? Could break on a bad rock.

The fix was counter-intuitive: a standard manganese jaw die (11-13% Mn) with a shallower tooth profile. Less aggressive wear, but far less risk of breakage. It lasted 1,200 hours in a mixed feed — not amazing, but predictable. And we planned a change-out every 1,000 hours regardless. The customer saved $3,800 in parts cost in the first year vs. a premium approach, and had zero unplanned downtime from wear part failure.

For the Metso slurry pump in this scenario? Get the pump condition monitoring manual (it's available on the Metso website as a PDF under their support section as of late 2024). But the cheap win is this: use a standard impeller and a single-piece liner in a rubber compound. It's 30% cheaper than the high-chrome option. And when it wears, you replace it. Simple. No heroics.

I still kick myself for not recommending that rubber liner earlier — I wasted a customer's $2,300 on a high-chrome set that didn't suit their sand-to-fines slurry ratio. That mistake sits right at the top of my personal regret list from 2021.

How to Know Which Scenario You're In

This is the part where a consultant would charge you $500. Here's how I teach my team to decide:

1. Is your feed material consistently hard and abrasive (say, consistently above 250 MPa compressive strength, with an abrasion index over 0.5)? → You're Scenario A. Go premium. But get a material properties test first. Don't guess. That mistake cost me 1,500 in redos and a black mark on my record.
2. Does your feed vary between hard rock and softer materials, week to week? → You're Scenario B. Pick a versatile jaw profile. Don't try to win every battle. Predictable wear wins the war. On a 47-part order (47 parts! That was a bad day), every single set failed in variation — we caught it too late. You can't do that again.
3. Is your inventory budget limited to one set at a time, and you cannot risk a breakage? → You're Scenario C. Standard manganese, shallow tooth, scheduled replacement. Don't chase maximum life. That's a luxury you can't afford.

The bottom line? The Metso C106 is a robust crusher. A good slurry pump is a workhorse. But the part that fits one application can ruin another. I've got a checklist I keep on my phone (literally — it's a note titled "DON'T SCREW THIS UP AGAIN"). It has 14 items. I've caught 47 potential errors with it over the last 18 months. Would you like a copy? If you're ever ordering based on what you found in that metso slurry pump handbook pdf, double-check the slurry's specific gravity first. Trust me.

We caught the error at a $3,200 order when a plant foreman pointed out the slurry analysis was from a different pit. That was the day I made the checklist.