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CH870
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03
Designed for Large-Scale Primary Crushing
Specifically engineered for the Sandvik CH870 primary cone crusher, ideal for high-capacity hard rock and mining operations.
Handles Massive Feed Sizes
Extra-deep crushing cavity accepts feed materials up to 1.2 m, reducing recirculation and improving throughput.
Mn22 High Manganese Steel with Alloy Enhancement
Manufactured using Mn22 high manganese steel with added nickel and molybdenum to increase toughness, wear resistance, and impact strength.
Built for Extreme Impact Conditions
Engineered to withstand heavy impact loads from large, irregular run-of-mine ore while minimizing cracking and premature failure.
Precision Casting Process
Produced with strict temperature control and large-scale precision molds to ensure uniform material performance across the liner.
Improves Plant Productivity
Optimized cavity design increases crushing efficiency and delivers more consistent secondary feed.
Reduces Downtime & Maintenance
Long service life lowers liner replacement frequency and minimizes unplanned shutdowns.
OEM-Compatible Performance
Manufactured to original-equivalent dimensional and material standards for accurate fit and reliable integration with CH870 systems.
Lower Cost per Ton
Higher throughput, improved wear life, and reduced maintenance contribute to lower total operating costs.
Understanding the exact technical specifications of your crushing components is critical for seamless integration and predictable maintenance scheduling. Every dimension, material property, and structural element of our replacement components is strictly controlled by our engineering team. The following table outlines the precise parameters and quality assurance metrics that ensure these parts meet the extreme demands of primary hard rock crushing facilities.
Parameter | Specification Details |
|---|---|
Product Name | Sandvik CH870 Mn22 Heavy-Duty Mantle Concave Bowl Liner |
Applicable Equipment | Sandvik CH870 Primary Cone Crusher |
Application | Large-scale mines, primary hard rock crushing, processing ungraded run-of-mine ore |
Material | Mn22 High Manganese Steel (Alloyed with Nickel and Molybdenum) |
Manufacturing Process | Ultra-high strength casting / Sand Casting |
Maximum Feed Size | Up to 1.2 meters |
Cavity Design | Extra-deep cavity |
Surface Treatment | Spray-Paint |
Quality Testing | Dimensional Checkout, Hardness Inspection, Metallographic Test, Chemical Composition Analysis, Destructive Test, PT/Penetration Testing |
Certifications | ISO 9001:2015, CE, RoHS |
Warranty | 12-Month Warranty / Guarantee to Fit |
When handling the immense pressures of primary crushing, the structural integrity and physical craftsmanship of the wear parts are paramount. Upon inspection, you will immediately notice the dense, heavy-duty metallic structure and the smooth, precision-machined mating surfaces that characterize our liners. These tactile and visual indicators of quality translate directly into a flawless seating process and uncompromising field performance.
Precision-Machined Mating Surfaces: Ensures a flush, secure fit against the crusher head and bowl, eliminating micro-movements that cause premature wear or internal damage.
Dense Structural Integrity: The ultra-high strength casting process eliminates internal voids, providing a solid, resonant metallic density that absorbs and dissipates kinetic energy efficiently.
Thermal Stability: Engineered to maintain its structural properties even when subjected to the intense frictional heat generated during continuous, high-capacity crushing cycles.
Optimized Wear Profiles: The surface contours are specifically designed to maintain a consistent nip angle throughout the liner's lifespan, ensuring uniform product shape and sustained throughput.
The foundation of this component's exceptional lifespan lies in its advanced metallurgical composition. By utilizing Mn22 ultra-high strength high manganese steel, and strategically infusing it with premium nickel and molybdenum alloys, we have fundamentally altered the steel's hardenability and toughness. For operations requiring even more aggressive wear solutions, advanced TiC (Titanium Carbide) inserts or ceramic composite upgrades can be integrated.
Work-hardening surface layer that becomes progressively tougher under intense impact.
Ductile core that absorbs the catastrophic shock of massive boulders without fracturing.
Significantly outlasts standard Mn18 liners in highly abrasive applications.
Reduces the frequency of maintenance interventions, keeping your primary circuit active.
Throughput is the lifeblood of any large-scale mining operation. This mantle and concave set features an extra-deep cavity design specifically optimized for the CH870’s kinematics. By expanding the acceptance capability to handle feed sizes up to 1.2 meters, this design allows operators to feed ungraded run-of-mine ore directly from the blast face, bypassing costly pre-screening stages.
Maximizes volumetric material utilization within the crushing chamber.
Drastically reduces the number of recycles needed to achieve secondary feed targets.
Prevents bridging and blockages when processing irregular, oversized rock formations.
Elevates the total tonnage output of the entire downstream processing plant.
Consistency in massive steel castings requires uncompromising process control. We utilize large-scale, precision-engineered sand casting molds combined with rigorous thermal management to ensure that the dense metallic structure remains absolutely uniform from the crushing face to the backing material. This eliminates the weak points that typically lead to premature failure under uneven stress distributions.
Comprehensive chemical composition analysis prior to pouring.
Strict dimensional checkout to guarantee exact geometric tolerances.
Non-destructive PT (Penetration Testing) to verify the absence of micro-fissures.
Metallographic and hardness inspections to confirm the precise crystalline structure.
Installation delays and improper fitment are unacceptable risks in high-stakes mining environments. As premium replacement components, these liners are manufactured strictly to the original dimensional and material specifications. We provide a steadfast "Guarantee to Fit," ensuring that the parts integrate flawlessly with the complex hydraulic, mechanical, and automated setting regulation systems of your equipment.
Eliminates the need for on-site modifications or grinding during installation.
Protects the main shaft and bowl assembly from eccentric wear patterns.
Ensures the hydraulic tramp release system functions exactly as designed.
Restores the crusher to its original factory performance metrics instantly.
In large-scale quarries and hard rock mines, a single hour of unplanned downtime can translate into six-figure revenue losses. The true value of these heavy-duty liners lies in their ability to protect your bottom line. By delivering an extended, predictable wear life, they allow maintenance planners to align liner changes with scheduled plant shutdowns, rather than reacting to catastrophic mid-cycle failures.
Drives down the per-ton processing cost through extended component longevity.
Minimizes the labor and crane rental costs associated with frequent changeouts.
Protects the capital investment of the crusher by absorbing the primary abuse.
Ensures predictable, stable production quotas are met month over month.
Procuring critical wear parts is not just a transaction; it is a long-term operational partnership. We understand that seamless supply chain management and reliable technical backing are vital for procurement professionals. From the moment the liners arrive on your site, our comprehensive support infrastructure is mobilized to ensure your complete operational success.
Backed by a robust 12-month quality warranty against manufacturing defects.
24/7 global customer service to address urgent operational inquiries immediately.
Available professional on-site mapping and custom drawing modifications for specialized ores.
Dedicated logistics support to ensure timely delivery to remote mining locations.
Selecting the right supplier for primary crushing components is a strategic decision that impacts the entire plant's profitability. Our manufacturing pedigree is built upon decades of metallurgical expertise and a deep understanding of heavy-duty mineral processing. We do not merely cast steel; we engineer reliable solutions that solve the most aggressive wear challenges in the industry.
Uncompromising Quality Standards: Certified by ISO 9001:2015, CE, and RoHS, ensuring global compliance and safety.
Direct Source Advantage: By dealing directly with the manufacturer, you eliminate intermediary markups and streamline communication.
Proven Track Record: Trusted by major hard rock mining operations worldwide to deliver consistent, high-performance wear parts.
Advanced Engineering Capability: Continuous investment in metallurgical research allows us to offer tailored alloy solutions for specific geological profiles.
To assist your engineering and procurement teams in making an informed decision, we have compiled the most critical technical questions regarding our heavy-duty mantle and concave sets. These insights delve into the operational advantages and integration specifics of our components.
How does the Mn22 alloy composition perform compared to standard Mn18 liners? The Mn22 alloy, fortified with nickel and molybdenum, offers a significantly higher initial hardness and a superior capacity for work-hardening. Under extreme impact, the surface hardens deeper and faster than standard Mn18, extending the wear life by a substantial margin while maintaining a ductile core to prevent cracking.
Can this mantle and concave set handle ungraded run-of-mine ore? Yes. The extra-deep cavity design and ultra-high strength casting are specifically engineered to accept feed sizes up to 1.2 meters. This allows the crusher to process massive, irregular boulders directly from the blast face without the risk of structural failure.
What quality testing protocols are implemented before shipment? Every massive casting undergoes a rigorous suite of tests, including dimensional checkout, hardness inspection, metallographic testing, chemical composition analysis, and PT (Penetration Testing) to ensure absolute structural integrity and defect-free performance.
Is the installation process identical to the original equipment parts? Absolutely. We manufacture these parts to strict original dimensional standards and offer a "Guarantee to Fit." The installation process, backing compound application, and seating procedures are identical to those required for OEM parts, ensuring zero installation friction.
How do these liners impact the overall per-ton processing cost? By significantly extending the intervals between liner replacements and maximizing the throughput of ungraded ore, these components drastically reduce both maintenance downtime and labor costs. This continuous, high-volume production directly lowers the operational cost per ton of crushed rock.
