1050132072 Mantle for Metso HP300 | Crusher Wear Parts

Metso HP300 Mantle — Part Number 1050132072

If you operate a Metso HP300 cone crusher, the mantle is the single wear part that sees the most abuse. Part number 1050132072 is the replacement mantle designed for the HP300 — it sits on the main shaft head and gyrates against the bowl liner to break rock in the crushing chamber. When this part wears thin, your product size drifts, throughput drops, and you start losing money on every ton.

We manufacture this mantle in our foundry and ship it to quarries and mines across six continents. The casting dimensions match the OEM specification exactly. Same mounting points, same shaft interface, same overall geometry. No shimming, no grinding, no modifications needed — pull the old one off, drop this one on, and you’re back to running.

Where This Part Fits in Your HP300

The mantle mounts directly onto the eccentric head assembly of the HP300 cone crusher. As the main shaft rotates, the mantle gyrates in an elliptical motion, pressing rock against the stationary bowl liner (concave). This is the core crushing action of the machine.

Metso’s HP300 is a mid-range hydraulic cone crusher in the HP series lineup. It’s widely used in aggregate production, mining operations, and recycling plants. You’ll find HP300s running in everything from small basalt quarries in Scandinavia to large iron ore processing circuits in Western Australia. The 1050132072 mantle is a standard replacement part for all HP300 units regardless of their specific application.

For reference, if you need the STD cavity profile version, that’s part number 7055308258 — same machine, different crushing chamber configuration. The cavity profile you choose depends on your feed size and desired output gradation.

Material Specification: Why Mn18Cr2

We cast these mantles in Mn18Cr2 — high manganese steel with 2% chromium addition. Here’s why that matters:

• Base manganese content (17-19%): Provides the work-hardening capability. Under impact loading, the surface hardness climbs from around HB 200 to HB 500+, forming a wear-resistant layer while the core stays tough and ductile.
• Chromium addition (1.5-2.5%): Refines the grain structure and improves as-cast hardness. This means the mantle starts harder and wears more evenly from day one, rather than needing a long break-in period.
• Carbon control (1.0-1.4%): Balanced to avoid carbide network embrittlement while maintaining adequate surface hardness.

We had a customer in Queensland running HP300s on greywacke — a nasty, abrasive sandstone that chews through standard Mn13 mantles in about 450 operating hours. Switched to our Mn18Cr2 mantles and got 720+ hours before changeout. That’s a 60% life extension just from the material upgrade.

The hardness range on our castings is HB 220-260 as-cast, with work-hardened surface reaching HB 480-520 under normal crushing conditions. We test every batch with Brinell hardness checks and keep mill certificates on file for traceability.

Common Failure Modes and What to Watch For

After 40 years of making mantles, we’ve seen most of the ways they can fail prematurely:

• Uneven wear on one side: Usually caused by feed segregation. If material piles up on one side of the chamber, that side of the mantle wears faster. Check your feed distributor and feed chute alignment.
• Cracking at the top edge: Often tramp metal damage. Even a small excavator tooth hitting the chamber at speed can crack the mantle. Install a metal detector upstream if you haven’t already.
• Accelerated wear at the bottom: Can indicate the mantle is loose on the shaft. Check the clamping arrangement and main shaft nut torque before every changeout.
• Spalling or flaking: Usually a heat treatment issue. If the casting wasn’t water-quenched properly after solution annealing, the carbide structure is wrong. We water-quench every mantle to lock in the correct austenitic structure.

If you’re changing mantles more often than you should, the problem might not be the mantle itself. It could be feed gradation, cavity profile mismatch, or even operating the crusher outside its recommended speed range.

What We Bring to the Table

Our factory has been casting crusher wear parts for four decades. We started making mantles and bowl liners for Metso crushers back when they were still branded Nordberg. We know these machines.

Every 1050132072 mantle we ship goes through the same process: pattern inspection → melting and pouring → sand removal → heat treatment (solution anneal + water quench) → machining → final inspection → packing. The whole process takes about 3-4 weeks from order to shipment for standard quantities.

We can supply single pieces or bulk orders. Most customers order 4-6 mantles at a time to keep a rotation going — one installed, one in the shop as backup, others in transit. We ship worldwide by sea freight or air express depending on urgency.

Getting a Quote

If you’re running Metso HP300s and looking for a reliable aftermarket mantle supplier, drop us a line. Tell us your application — what you’re crushing, feed size, desired output, current mantle life — and we’ll recommend the right material and cavity profile.

Part number 1050132072 is a standard item in our range and we typically keep production slots open for regular orders. Lead time is usually 3-4 weeks from order confirmation.

You can reach us at benny@crusherwearparts.cn or WhatsApp +86 13857400969. We reply fast — usually within a few hours during business hours (GMT+8).