7055208000 Bowl Liner Extra Fine for Metso HP100 Cone Crusher

Why 7055208000 Bowl Liner Matters for Your HP100 Operation

If you run a Metso HP100 in extra fine configuration, you already know the bowl liner takes a beating. The 7055208000 is the concave designed for that EF cavity setup — the one that handles the tightest CSS and the smallest feed. When this liner wears out, your product size drifts, your throughput drops, and suddenly you are scrambling to find a replacement that actually fits right the first time.

We have been supplying replacement bowl liners for Metso HP series cone crushers for over a decade now. The 7055208000 for HP100 is one we ship regularly, especially to quarries running manufactured sand circuits. These small HP100 units often work in closed-circuit with VSI crushers, and the bowl liner on the EF cavity is the component that defines final product shape and gradation.

Material Specification and Wear Performance

Our replacement 7055208000 bowl liner is cast in high manganese steel (Mn14Cr2 as standard, Mn18Cr2 available for more abrasive applications). The key to getting good wear life from a bowl liner is not just the steel grade — it is the heat treatment. We solution-anneal every casting at 1050-1100°C and hold for a calculated soak time based on section thickness. This ensures the carbide structure is properly dissolved before water quenching.

What does this mean in practice? A Mn14 bowl liner running in a granite EF application should give you 1,800 to 2,500 operating hours before you see the corrugation profile flatten out to the point where product shape degrades. Mn18 pushes that to 2,500-3,200 hours in the same material, but the cost difference is roughly 15-20%. The decision comes down to your specific feed abrasiveness and how tight you run your CSS.

One thing we have noticed from field feedback: the HP100 EF bowl liner tends to wear unevenly on the feed side. This is almost always a feed distribution issue, not a casting defect. If your feed chute is not centered, one quadrant of the bowl liner will wear 30-40% faster than the others. Check your feed distributor plate before you blame the liner.

Dimensional Accuracy and Fit

Fit is where cheap replacements fall apart — literally. The 7055208000 bowl liner for HP100 has specific thread patterns and locking geometry that must match the adjustment ring exactly. We CNC-machine the thread form from the original Metso drawing dimensions. Every production batch is checked with a thread gauge before shipping.

We have had customers send us photos of competitor liners where the thread pitch was off by 0.5mm. You can force those into the adjustment ring with a hammer, but the contact pattern is wrong and you will get fretting wear on the threads within weeks. Our liners install hand-tight with normal workshop methods — no hammering required.

Stock Availability and Delivery

We keep 7055208000 bowl liners in regular production rotation. Standard lead time from order to port is 25-30 days. For customers with predictable wear schedules, we offer blanket orders where we hold finished stock and ship against a call-off schedule. This eliminates the risk of a worn-out liner shutting down your HP100 while waiting for replacements.

Shipping is typically in wooden crates, single liner per crate for the HP100 size. Each crate is labeled with part number, heat number, and material grade for your inventory tracking. We can also supply the matching 7055308122 mantle EF/F for HP100 as a matched set, which we recommend — mixing old mantles with new bowl liners creates uneven wear patterns that reduce the effective life of both components.

Who Should Buy This Part

The 7055208000 bowl liner EF is a standard catalog item for Metso HP100 cone crushers. If your machine is configured for extra fine crushing — typically CSS 6-10mm — this is the correct concave. It is commonly used in:

• Manufactured sand production circuits
• Secondary/tertiary crushing for aggregate plants
• Pebble crushing in mining operations
• Recycling and C&D processing

We supply to quarry operators, mining companies, and wear part distributors across Europe, North America, Australia, and Africa. If you are a dealer looking for a reliable source of HP100 bowl liners with consistent quality, we would be happy to discuss pricing and volume arrangements.

Technical Data Summary

For pricing, availability, or technical questions about the 7055208000 bowl liner or any other Metso HP100 wear parts, reach out to us directly. We respond within one business day and can typically provide a formal quotation the same day.

Installation Tips From the Field

Installing a bowl liner on the HP100 is straightforward if you follow a few basics. First, clean the adjustment ring threads thoroughly before assembly. Old manganese oxide and dust build-up in the threads is the number one cause of difficult installation. A wire brush and some penetrating oil the day before makes a big difference.

Second, torque the liner to specification in a star pattern — not going around in a circle. This ensures even clamping pressure and prevents the liner from cocking slightly in the ring. We have seen cases where installers tightened one section fully and worked around, ending up with the liner sitting 1-2mm proud on the opposite side. That gap causes impact loading when the head contacts the bowl liner during tramp iron events, and can crack the casting.

Third, always run in a new bowl liner with the matching mantle. If you put a fresh EF bowl liner against a half-worn mantle, the cavity geometry is mismatched and you will get poor product shape for the first 200 hours until the mantle wears to match. This wastes both capacity and liner life. If budget allows, we strongly recommend replacing both as a set — the 7055308122 mantle EF/F is designed to pair with this exact bowl liner profile.

Quality Control and Traceability

Every 7055208000 bowl liner we ship comes with a material test certificate showing the actual chemical composition and mechanical properties from the production heat. This is standard — not something you have to request. The heat number is stamped on the inside bore of every liner so you can trace it back to the pour record.

We run hardness tests on every heat lot. The target is 200-230 HB for Mn14 and 220-260 HB for Mn18, measured on a machined flat on the liner rim. If a heat comes out of range, the entire batch is re-heat-treated before we approve it for shipping. This is not the approach every foundry takes, but it is the only way to guarantee consistent wear performance batch after batch.

For distributors and OEM partners, we can also provide third-party inspection reports from SGS or Bureau Veritas on request. Our foundry is audited annually and maintains ISO 9001:2015 certification.