34-0640 Mantle for Metso HP300 | Crusher Wear Parts

34-0640 Mantle for Metso HP300 — The Workhorse of Your Secondary Crushing Circuit

If you’re running a Metso HP300 in secondary or tertiary crushing, you already know the mantle takes a beating. The 34-0640 is the standard cavity profile mantle for this machine — it sits directly on the main shaft head and gyrates against the bowl liner to break rock. Every time a tonne of granite, basalt, or limestone gets crushed in your HP300, this is the component doing the heavy lifting.

We’ve been casting mantles for Metso HP-series cone crushers for over 40 years. The 34-0640 is one of our most frequently ordered items, and for good reason — the HP300 is probably the most common mid-size cone crusher on the market right now.

Part Number & Specifications

The 34-0640 mantle is designed for the Metso HP300 cone crusher. Here’s what you need to know:

• Part Number: 34-0640
• Compatible Machine: Metso Nordberg HP300
• Cavity Profile: Standard (medium-to-coarse configuration)
• Material Options: Mn13Cr2, Mn18Cr2, Mn22Cr2 (depending on application hardness)
• Weight: Approximately 580 kg
• Mounting: Bolted to the main shaft head assembly, secured with locking bolt

The standard cavity profile gives you a balanced feed opening and closed-side setting range. It works well for most aggregate applications — think 0-16mm or 0-22mm product specs. If you’re running a tighter circuit and need a finer product, you’d want to look at the fine or extra-fine cavity mantles instead.

Application — Where We See This Part Working Hardest

The HP300 typically runs in secondary crushing behind a primary jaw or gyratory. We supply the 34-0640 mantle to quarries across Australia, South America, and Southern Africa — places where the HP300 is the go-to machine for producing road base, railway ballast, and concrete aggregate.

One thing we’ve noticed over the years: the 34-0640 wears differently depending on your feed material. In limestone, you might get 2,500-3,000 hours of service life. In hard granite or basalt, that number drops to 1,200-1,800 hours. And if you’re processing abrasive sandstone, we’ve seen customers replacing at 800-1,000 hours — which is why material selection matters so much.

We had a customer in Queensland running an HP300 in a river pebble circuit. Pebbles are brutal — highly abrasive, rounded feed that doesn’t work-harden the manganese the way angular rock does. They were burning through Mn13 mantles every six weeks. Switched them to Mn18Cr2 and got an extra three weeks out of each set. That’s the kind of difference material grade makes.

Material & Features — Why Manganese Grade Matters

All our mantles are poured in medium to high manganese steel. The three grades we offer:

• Mn13Cr2 (13% manganese): Standard grade. Good all-round performance in soft to medium-hard materials. Work-hardens under impact. Cheapest option, and perfectly adequate for many applications.
• Mn18Cr2 (18% manganese + 2% chromium): Our most popular grade for the HP300. Higher initial hardness (HB 200-230), better work-hardening response, and the chromium addition improves carbide distribution. If you’re crushing anything above 200 MPa compressive strength, start here.
• Mn22Cr2 (22% manganese): For the really tough jobs — hard rock, high impact, heavy abrasion. More expensive per piece, but the extended life makes it cheaper per tonne crushed in demanding conditions.

Whatever grade you choose, we guarantee OEM-dimensional accuracy. The 34-0640 mantle we cast matches the original Metso drawing — same bolt pattern, same shaft interface, same liner profile. No modifying, no shimming, no headaches during installation.

One detail that matters but doesn’t get talked about enough: the as-cast surface finish. Our mantles come out of the mold with a smooth internal crushing face that doesn’t need grinding or machining before installation. Some foundries skip this step to save on finishing costs, and it shows — rough surfaces create stress concentrations that lead to premature cracking. We’ve seen it happen.

Why Choose Us for Your Metso HP300 Mantles

Four decades of manufacturing cone crusher wear parts. We’re not a trading company that sources from five different foundries — we’re a single factory with our own melting shop, heat treatment furnaces, and QC lab. Every mantle gets chemical analysis, hardness testing, and dimensional inspection before it ships.

Our HP300 mantles (including the 34-0640) are cast in batches of 30-50 pieces, which gives us consistent quality across the lot. We don’t mix pours. Each batch gets its own heat number and test coupon.

We stock the most common part numbers — including 34-0640 — so if you need a set shipped fast, we can usually get it out within 2-3 weeks. For custom material grades or special cavity profiles, lead time is about 4-5 weeks from order confirmation.

If you’ve been reading about HP200 standard mantle for your HP200 and you’re also running HP300s in your circuit, we can supply both from the same shipment — saves on freight and keeps your inventory consistent.

Get a Quote or Ask a Question

Not sure if the 34-0640 is the right mantle for your HP300 setup? Or wondering whether Mn13 or Mn18Cr2 would give you better wear life in your specific material? Drop us a line — we’ve probably seen your exact application before and can point you in the right direction.

Reach out to Benny at benny@crusherwearparts.cn or WhatsApp +86 13857400969. We’ll get back to you within one working day with pricing, lead time, and any technical advice you need.