Metso HP Cone Crusher Liner Selection: Materials, Chambers and Replacement

Why HP Liner Selection Matters

Metso HP (High Performance) cone crushers are widely used in mining and aggregate production. Models from the compact HP100 to the heavy-duty HP800 are designed for different throughput and feed requirements. Mantles(the moving cone liners) and concaves(the stationary bowl liners) are two main wear components. Calculate their cost share from site purchasing, maintenance and downtime records.

An unsuitable liner pair can affect throughput, energy use and life; quantify the effect from site data. This guide discusses materials (Mn13/Mn18/Mn22Cr), chambers (EC/C/M/EF), replacement and installation in the context of HP200, HP300, HP400, HP500 and HP700 identification. It does not confirm compatibility with every configuration.

HP Model Overview

HP models share a crushing design approach but differ in operating capacity and liner configuration. Start liner selection by establishing the operating range of the installed model.

A liner selected for secondary granite crushing in an HP300 can differ substantially from one for tertiary copper-ore crushing in an HP700. Start with the installed model and actual duty.

Liner Materials: Mn13, Mn18 and Mn22Cr

The manganese steel grades considered for HP liners differ in manganese content, work-hardening response and application range. These austenitic steels can work-harden, with the response governed by grade, heat treatment, impact energy and feed. Record acceptance hardness separately from the surface hardness developed in service; no universal guaranteed value applies.

Mn13Cr2 (Standard Manganese Steel)

Mn13 is a common high-manganese steel designation. Confirm chemistry, delivery condition and acceptance requirements from the applicable standard and material certificate. The following duties are candidates for assessment; model or feed size alone cannot determine the grade:

• Secondary crushing with feed larger than 50mm
• Moderately abrasive ore (abrasion index A_i 0.3–0.5)
• Duties where impact toughness takes priority over abrasion resistance alone
• HP200 and HP300 in typical aggregate applications

Mn18Cr2 (High-Manganese Steel)

Compare Mn18 and Mn13 against standards, heat treatment, impact and abrasion. Higher manganese content does not guarantee a fixed life gain or surface hardness; verify performance through controlled trials and wear records.High-manganese steel Mn18Cr2 applications to assess include:

• Highly abrasive ore (A_i 0.5–0.8)
• Primary/secondary hard-rock crushing (granite, basalt and quartzite)
• HP400 and HP500 processing abrasive feed
• Duties where fewer replacements can justify a higher material price

Mn22Cr2 (Higher-Manganese Steel)

Mn22 denotes a higher-manganese candidate material; confirm chemistry and manufacturing requirements from the standard and contract. The applications below still require impact, abrasion, chamber and failure-record checks, without assuming superiority to other grades:

• Extremely abrasive ore (A_i > 0.8)
• Fine crushing with high compressive stress in the parallel zone
• HP400–HP700 processing hard, highly abrasive feed in large mines
• Copper, gold and iron-ore duties where liner life is a major consideration

Chamber Selection: EC, C, M and EF

Metso HP crushers offer different chamber configurations. The matching mantle and concave geometry strongly affects performance. An unsuitable profile can cause uneven wear, reduced throughput and poorer product shape; confirm the supported configuration for the installed model.

Extra-Coarse (EC) Chamber

EC is generally a candidate for coarser feed, but permitted feed, discharge setting and reduction ratio require confirmation for the specific HP model and liner pair. Applications to assess include:

• Feed grading within machine and chamber drawing requirements
• Secondary duty after a primary jaw or gyratory crusher
• Throughput takes priority over product shape

Coarse (C) Chamber

C denotes a coarse chamber; it does not establish a shared feed range or reduction ratio across HP models. Use the nameplate, liner drawing and feed grading to assess suitability for:

• Secondary crushing in typical mining circuits
• Mixed feed with moderate size variation
• Balance between throughput and product quality

Medium (M) Chamber

M denotes a medium chamber and can be assessed for finer feed and product control. Its stage assignment depends on the specific model, feed and screening circuit:

• Final crushing stage before screening
• Tighter product size distribution is required
• Feed is prescreened to remove excess fines

Extra-Fine (EF) Chamber

EF denotes an extra-fine chamber. Permitted feed, CSS and product range still require model and liner-drawing checks. Fine-material applications to assess include:

• Prescreened feed within the chamber's permitted range
• Manufactured sand and concrete aggregates
• HP200 and HP300 in quaternary duty

A chamber that is too coarse for the feed can contribute to adjustment ring movementunder excessive crushing forces, risking damage to the frame and adjustment ring.

Liner Assessment by Model

The table provides an initial comparison. Final selection depends on ore characteristics, feed size distribution and production objectives.

These ranges assume normal feed distribution, an appropriate closed-side setting (CSS) and no tramp metal. Actual life varies with ore abrasiveness, feed size distribution and operating conditions.

Replacement Timing and Wear Monitoring

Determine HP liner replacement timing from several indicators rather than a fixed calendar interval.

Key Replacement Indicators

1. Throughput falls below the baseline— check feed, setting, product and power together; throughput alone does not establish a replacement limit.
2. Product size distribution changes— product becomes coarser or oversize increases; monitor passing percentages at key screen sizes.
3. Abnormal energy-per-tonne trend— reduced crushing efficiency can increase energy per tonne.
4. Critical thickness approaches the specified safe minimum— measure during planned shutdowns using suitable wear gauges.
5. Visible cracks or worn-through areas— stop and assess replacement to prevent frame damage.

For HP400–HP700, establish a wear-profile survey program: set measurement intervals from manufacturer requirements, risk and maintenance windows. Record liner profiles, hours, tonnage and product changes. Evaluate replacement forecasts and downtime benefits from ongoing site records.

Installation Checks

Correct installation matters as much as material selection. A well-made liner can still perform poorly if installed incorrectly.

Mantle Installation

1. Clean the supporting surfaces thoroughly— remove residual backing compound and debris from the previous liner.
2. Apply backing compound uniformly where specified— ensure the required coverage without voids that could cause localized damage.
3. Allow the specified curing time— follow the backing product's temperature, mixing, application and curing instructions rather than a universal number of hours.
4. Tighten the mantle nut to specification— use the torque specified by Metso for the installed HP model.

Concave Installation

1. Inspect the upper assembly threads— worn or damaged threads can affect seating and adjustment accuracy.
2. Follow the specified concave installation sequence— where a segmented design is used, follow the model-specific Metso installation sequence.
3. Follow the run-in procedure— follow the model-specific feed, load and inspection procedure without assuming a universal run-in duration.
4. Check fasteners after run-in— initial seating can affect clamping; inspect and retighten as specified after run-in.

Installation Errors to Avoid

• Insufficient backing cure, which can lead to loosening and uneven wear.
• Excessive tightening that can damage threads and require frame repair.
• Uneven feed distribution, causing localized wear and premature damage.
• Omitting the specified run-in and reinspection can leave seating or fastening problems.

ANRANST Replacement Liners for HP Applications

ANRANST We accept drawing- or sample-based enquiries for HP liners. Confirm manufacturability, critical dimensions, material, chamber and interchangeability individually against the full model, serial number, original reference and current drawing. Universal direct interchangeability is not promised. Procurement checks include:

• Verify the Contract Material Specification— request material certification for Mn13Cr2, Mn18Cr2 and Mn22Cr2 as specified.
• Verify the Specific Chamber — check chamber and liner drawings separately for candidate models from HP100 to HP800; the series name does not establish supply of every configuration.
• Compare Cost per Tonne— use consistent technical requirements, quotation periods and site conditions to compare purchase, life and downtime costs.
• Dimensional and Material Records— request spectrometric composition and hardness reports.
• Engineering Support— assess chamber and material options against the ore characteristics.

Send your HP model and existing OEM references for a cross-reference check and quotation. Our engineers can assess material grades and chamber profiles for the specified duty.

Frequently Asked Questions

Putting the Selection Together

Assess HP liner material, chamber, installation, replacement and operating conditions together. Calculate improvements from baseline and trial tonnage, energy, wear and downtime records. Do not promise a fixed cost-per-tonne reduction without site data.

ANRANST can assess supply feasibility from the model, serial number, original reference and drawings. Confirm material requirements, critical dimensions, inspection documents and duty individually before quotation and controlled trials.