PG Cone Crusher

Introduction

METRO single cylinder hydraulic cone crusher is a modern, highly efficient piece of crushing equipment used across various industrial sectors. It is designed to crush medium-hard to very hard rocks and ores, making it an ideal solution for secondary, tertiary, and fine crushing applications. This type of crusher is distinguished by its use of a single hydraulic cylinder to manage its main functions. Its design is considered more advanced than older models, offering a simple structure, excellent reliability, and high crushing capacity .

Working Principle
Power Transmission: An electric motor drives the eccentric sleeve through a system of v-belts, a transmission shaft, and gears .
Crushing Action: The rotating eccentric sleeve causes the main shaft and the moving cone to perform a pendulum-like motion. This brings the moving cone close to and then away from the fixed cone .
Material Reduction: Material entering the crushing chamber is compressed, impacted, and broken between the moving and fixed cones. The "laminating crushing" principle allows material to be crushed against itself, resulting in more uniform and cubic-shaped final products .
Discharge: Once crushed to a size smaller than the discharge opening, the material falls out from the bottom of the crusher .

Applications
The single cylinder hydraulic cone crusher is a versatile machine, widely applied in industries that require the processing of hard materials. Its primary applications include:
Mining and Metallurgy: For crushing various ores (both ferrous and non-ferrous).
Construction and Infrastructure: Used to produce aggregates for highway, railroad, and building construction.
Chemical and Silicate Industry: For processing raw materials in these industrial sectors.
Sand and Aggregate Production: A key machine in producing high-quality aggregates for concrete mixing plants, dry mortar plants, and quartz sand production.
The machine is suitable for both medium crushing (standard type) and fine crushing (short-head type) to meet different production needs.

Features and Advantages
The popularity of the single cylinder hydraulic cone crusher stems from its numerous technological and operational features. Key features include:
1. High Efficiency and Productivity
The crusher's design, which supports the main shaft at both ends, allows it to withstand high crushing forces. This, combined with an optimized crushing stroke and speed, results in significantly higher efficiency and productivity. In many cases, the output can be 35% to 60% higher than that of traditional spring cone crushers of the same size .
2. Advanced Hydraulic System
The single hydraulic cylinder is the core of the system and provides several critical functions :
Discharge Port Adjustment: The hydraulic cylinder allows for easy adjustment of the discharge opening, even while the machine is operating, to ensure consistent product size .
Overload Protection: If an uncrushable object (like tramp iron) enters the crushing chamber, the hydraulic system can automatically lift the moving cone to release the object and prevent damage. After the object is discharged, the system resets automatically .
Clearing the Chamber: The system can also be used to repeatedly raise and lower the cone to clear a blocked crushing chamber .
3. High-Quality End Products
The unique crushing chamber and the laminating crushing principle lead to a final product that has a higher proportion of cubical particles and a more uniform particle size, with fewer flaky or needle-shaped pieces .
4. Simple Design and Ease of Maintenance
The single-cylinder design is inherently simpler and more compact than multi-cylinder or spring-type cone crushers. This translates to a lower weight, reduced costs for production and operation, and easier maintenance . The structure is straightforward and known for its stability and reliability .
5. Intelligent Control
Many modern units are equipped with intelligent control systems that allow for one-touch adjustment of the discharge port, continuous monitoring of the machine's operational status and liner wear, and other process optimization functions .
6. Durability and Protection
The crusher is designed with durable materials and features to enhance its lifespan. Some models include a positive pressure dust-proof system that prevents dust from contaminating the lubrication oil and bearings, ensuring long-term reliable operation 

Specification