77050132118 Mantle for Metso HP300 | Crusher Wear Parts

The Metso 77050132118 Mantle — What You Need to Know

If you’re running a Metso HP300 cone crusher, the mantle is one of the parts you go through most. It sits on the main shaft, gyrates against the concave, and does the actual work of breaking rock. When it wears out — and it will — you need a replacement that drops right in and performs. That’s exactly what the 77050132118 mantle is designed for.

We’ve been casting these mantles for over 40 years. The 77050132118 is a pattern we know inside and out. Every dimension matches the OEM spec so it seats properly on the head assembly and gives you the correct closed-side setting from day one.

Where the 77050132118 Fits in the HP300

The HP300 is Metso’s mid-range hydraulic cone crusher — popular in quarrying, aggregates, and mid-size mining operations. It’s the machine you see at plants processing 150-200 tonnes per hour across Australia, Chile, South Africa, and India.

The mantle on an HP300 takes the brunt of the crushing force. Rock feeds into the cavity, gets pinned between the mantle and bowl liner, and gets squeezed until it breaks. Every rotation of the eccentric causes the mantle to gyrate, creating the crushing action. The mantle surface takes constant impact and abrasion — that’s why material quality matters so much.

The 77050132118 mantle is compatible with the standard HP300 cavity configuration. If you’re unsure whether this is the right part number for your machine, check your parts manual or send us a photo of your current mantle’s identification tag. We can cross-reference it.

Material Options — Mn13 vs Mn18Cr2

This is where a lot of buyers make mistakes. The mantle material directly determines how long it lasts in your specific application. We cast these in two main grades:

• Mn13 (13% manganese steel) — Standard grade. Good for softer, less abrasive rock like limestone and dolomite. It work-hardens under compression, which is the mechanism that makes manganese steel useful for crushing. If your feed is relatively soft and your current Mn13 mantles are lasting 6-8 weeks, there’s no reason to switch.
• Mn18Cr2 (18% manganese with 2% chromium) — Higher manganese content plus chromium for increased hardness and wear resistance. Better suited for harder, more abrasive rock — granite, basalt, quartzite. We’ve had customers in Western Australia switch to Mn18Cr2 on their HP300 mantles processing iron ore and get 30-40% longer life compared to standard Mn13. The upfront cost is maybe 15-20% more, but the cost-per-tonne crushed drops significantly.

The key point: don’t automatically go for the harder material. If you’re crushing soft limestone, Mn18Cr2 won’t give you any advantage because work-hardening needs impact to activate. You’d be paying more for a benefit you can’t use.

Why Mantles Wear Out Faster Than They Should

Premature mantle wear usually comes down to one of four things:

• Wrong cavity profile for your feed size. If you’re feeding oversized rock into a fine cavity, the mantle takes impact loads it wasn’t designed for. Cracking, chipping, and accelerated wear follow quickly.
• Wrong material grade. We mentioned this above — Mn13 in hard rock wears too fast; Mn18Cr2 in soft rock doesn’t work-harden properly.
• Tramp metal in the feed. A piece of excavator bucket tooth or drill steel hitting the mantle at speed will cause localised damage. Some plants don’t run adequate magnetic separation. It’s a false economy — one hit can crack a mantle that should have lasted months.
• Improper installation. If the mantle isn’t torqued correctly on the shaft, or if the backing compound (epoxy or zinc) isn’t applied evenly, you get movement between the mantle and head. This causes fretting wear on both surfaces and can lead to the mantle spinning on the shaft — which is a expensive repair.

What We Offer on the 77050132118

When you order this mantle from us, here’s what you get:

• Exact OEM dimensions — we use the original Metso drawings as our baseline, so the mantle drops onto your HP300 shaft without any modification
• Choice of Mn13 or Mn18Cr2, depending on your application
• Full chemical composition report with every shipment — you’ll see the exact Mn, C, Cr content
• 40 years of casting experience on this specific part pattern

We supply to quarries and crushing contractors across Europe, North America, Australia, and Africa. Most orders ship within 2-3 weeks from our foundry. If you need a regular supply, we can set up a standing order so you always have spares on hand before your current mantle wears through.

Getting a Quote

If you need a replacement 77050132118 mantle for your Metso HP300, send us a quick email with your quantity and preferred material grade. We’ll get pricing back to you within 24 hours.

Not sure about the material grade? Tell us what you’re crushing — rock type, feed size, current mantle life — and we’ll give you a recommendation based on what we’ve seen across hundreds of similar applications. No obligation, no hard sell.

We also stock matching cone crusher parts for the HP300, including bowl liners, main shaft assemblies, and eccentric bushes. If you’re doing a scheduled maintenance shutdown, it makes sense to order everything together.