Gyratory crushers serve a pivotal role in mining and aggregate operations, using sheer centrifugal force to efficiently grind rocks and ore. The advanced Metso gyratory cone crusher line, called the Superior MK series, includes the MKIII models that deliver major gains in productivity, uptime, and cost-efficiency over previous models.
This blog will help you understand how these innovative crushers can optimize throughput for your application.
Unlocking Higher Performance With The Metso MK Series
With over 100 years spent perfecting gyratory crusher designs, Metso Outotec leads the industry in high-performance crushing technology. The company’s Superior MK series represents the third generation of Superior primary gyratory crushers, which are relied upon by mining and aggregate producers worldwide.
The MK name reflects the manufacturing origin in Metso Karhula, Finland. While building on proven platforms, Metso has incorporated cutting-edge upgrades and features. Compared to earlier models, MK series gyratory crushers achieve much higher throughput capacity with lower operating costs and less downtime.
Metso offers three MK series models with unique advantages:
- MKIII 54-75 – Large feed opening and capacity ideal for high-volume crushing
- MKIII 50-65 – Balanced performance for mid-range applications
- MKIII 42-65 – Compact model efficiently handles small operations
Metso MKIII 54-75 – The Pinnacle Of High-Volume Crushing
With a massive 54-inch feed opening, the MKIII 54-75 is built to tackle the highest crushing volumes. It delivers a maximum capacity of up to 7,500 MTPH (metric tons per hour) for large mining or aggregate applications.
The 54-75 tips the scales at an impressive 533,500 lbs. To drive the extra-large crushing forces needed, it utilizes an 800-hp motor. Upgraded internals, including a high inertia flywheel, give it faster crushing speed and 30% more capacity than the previous 54-75 models.
The MKIII 54-75 is loaded with heavy-duty enhancements:
- Hydraulic cylinders and an automatic threading system allow safe, fast removal and installation of the shell assemblies.
- Rugged one-piece main shaft stands up to extreme loads during crushing operations.
- High-strength steel is used in areas under the greatest stress, such as the mantle, concave, and throat.
- Large upper counterweight cuts dynamic loads by 60% for smooth operation, even on hard materials.
- Arch-shaped bottom shell overcomes material bridging issues.
- Innovative dual-acting hydraulic tramp release design handles uncrushable objects.
- State-of-the-art gear and pinion profile improve grip and reduce abrasive wear.
Integrated VisioRock® and VisioTruck® systems enable advanced crushing automation. VisioRock® uses cutting-edge imaging technology to monitor feed size distribution in real time. This allows closed-loop feedback to optimize rock-crushing performance.
VisioTruck® employs vision systems to analyze truck loads as they are dumped into the crusher. It intelligently tracks each load’s properties to maintain consistent crushing operations. By optimizing size reduction, these systems maximize throughput and plant efficiency.
For the highest capacity primary crushing up to 7,500 MTPH, the Metso MKIII 54-75 has no equal. Its unbeatable performance will significantly boost production and profitability.
Achieve More With The Metso MKIII 50-65
With a 50-inch feed opening, the MKIII 50-65 masters mid-range capacities up to 6,375 MTPH. It’s an exceptional solution for diverse aggregate and mining feeds.
Despite weighing in at 337,300 lbs, the 50-65 needs just a 600 hp motor. Performance enhancements such as an optimized speed rotor let it achieve up to 30% more capacity while using less energy than prior models.
The 50-65 shares many robust design elements with the 54-75:
- Quick, safe shell separation for access to internals via hydraulic cylinders.
- One-piece forged main shaft built for long service life even in abusive conditions.
- Strategically placed inspection ports simplify routine maintenance.
- High-strength steel in high-stress areas withstands fatigue.
- Built-in sensors monitor bearing temperature, oil pressure, and other valuable metrics.
- Advanced liner profiles maximize crushing action throughout the chamber.
- Top-size-in design handles feed chunks up to 41 inches.
Integrated sensor ports allow real-time monitoring to schedule predictive maintenance. You’ll maximize uptime and catch problems before they cause extended downtime.
For its balance of compact footprint with a strong 6000+ MTPH capacity, the MKIII 50-65 is a premier mid-range primary crushing solution.
Metso MKIII 42-65 – Big Capabilities In a Smaller Package
Metso designed the compact MKIII 42-65 for smaller capacity needs of up to 5,250 MTPH. With a 42-inch feed opening, it readily processes feed up to 41 inches. Despite its smaller size, the 42-65 delivers up to 30% more capacity than previous generation 42-65 models.
Weighing 264,000 lbs, the 42-65 requires just a 600 hp motor. It incorporates many improvements offered in the larger MK series models:
- Quicker change-outs thanks to the hydraulic shell separation system.
- Heavy-duty forged main shaft stands up to shock loads.
- Advanced tramp release protects against uncrushable objects.
- Upgraded metals in high-wear areas last up to three times longer.
- Precision balancing prevents vibration issues at high speeds.
- Refined inner profiles ensure uniform wear and maximum crushing.
- Bearing sensors enable predictive maintenance for uptime optimization.
When your operation calls for a modest primary crushing capacity of up to 5,000+ MTPH, the Metso 42-65 allows you to do more with less.
Why Metso Leads The Way In Gyratory Crushers
With any MK series model, Metso gives you an advanced primary crushing solution. All their units deliver higher availability, throughput, and lower cost of ownership. Benefits that set MK series gyratory crushers apart include:
- Maximized Uptime – Fast change-outs and advanced sensors minimize downtime losses, keeping you crushing around the clock.
- Higher Efficiency – Upgraded components increase capacity while lowering energy consumption for an optimal combination.
- Improved Safety – Hydraulic cylinders and other integrated safety features protect personnel during maintenance and operation.
- Lower Operating Costs – Less wear, reduced maintenance needs, and higher throughput lower your cost per ton produced.
- Expertise – With 100+ years of experience, Metso ensures top performance backed by engineering excellence.
- Upgradeable – Existing Metso owners can upgrade to MK series capabilities thanks to retrofittable designs.
Choose The Right Metso Gyratory Crusher For Your Needs With Expertise From Mellott Company
When you need a primary gyratory crusher that delivers maximum throughput and reliability, the Metso MK series should be your first choice. With over a century of engineering expertise, Metso has created these innovative crushers using proven designs plus cutting-edge upgrades.
Whether you require the massive crushing forces of the MKIII 54-75 or the modest capacity of the MKIII 42-65, Metso has a superior solution matched to your needs.
As an authorized Metso distributor, Mellott Company has extensive knowledge of these crushers. Our crushing experts can help you select the ideal MK series model while providing parts and service support over the crusher’s lifetime. Contact us today at 888.621.8533 or online to learn how Metso MKIII primary gyratory crushers can maximize your operation’s productivity.