Introduction
Round link steel chain is a special kind of chain made of high-strength alloy steel, with the chain links being round or oval and interconnected. It is not an ordinary lifting or binding chain, but a core transmission component specially designed for dynamic and high-load material conveying systems. In underground mining operations, it mainly serves as a key part of the armoured face conveyor chain, installed on heavy-duty scraper conveyors, and is used to forcefully convey the coal or rock stripped from the coal wall by shearer or planer. Its design must be capable of withstanding huge tensile loads, severe impacts, and continuous friction with coal, rock and metal chutes.
Technical Specifications and Dimensions
We offer a complete range of round link chains to meet the requirements of different equipment and conveying capabilities. The size range of O series chains is available from 14×50 to 48×152. We can help you select the most suitable chain specification and grade based on your specific needs, such as the length of the conveyor, drive power and expected conveying capacity. Detailed technical data sheets, including ultimate breaking load, unit weight and other information, can be obtained by contacting our technical team at any time.
GBC Ever-power O Series Round Link Chain: Specifically Designed for Extreme Working Conditions
The underground mining chain is the product of decades of engineering experience combined with advanced manufacturing technology, specifically designed to cope with the harsh conditions and high-intensity demands of underground mining. What we offer is not merely a chain, but a commitment to operational continuity.
Robust Durability: Each link in the chain is meticulously designed and manufactured to offer outstanding durability. This means a longer service life and fewer replacement frequencies, directly reducing your life cycle cost.
Strong Toughness: The underground working environment is full of unpredictable impact loads, such as the falling of large rocks. The O series chains possess extremely strong toughness, effectively absorbing and dispersing impact energy, preventing brittle fracture caused by overload, and maximizing the safety of personnel and equipment.
These basic features make our high tensile round link chain a reliable choice for keeping the production line running in the most challenging mines.
Core Performance Advantages
Deep underground, chains are confronted with three major problems: wear and tear, corrosion and fatigue. The O series mining round link chain of Ever-power provides comprehensive solutions to these three major challenges through advanced materials science and processing techniques. Our chains are designed to offer resistance to wear, corrosion and fatigue, all of which are common challenges in underground mining operations.
- Abrasion Resistance: when the chain is running at high speed, it constantly rubs against highly abrasive coal, rocks and chutes. We use a special case hardened asteel link chain process to harden the surface of the link to form an extremely wear-resistant surface layer while maintaining the toughness of the core of the link, effectively delaying the wear process.
- Excellent Corrosion Resistance: The water in mines is usually acidic and can cause corrosion to metals, especially after surface wear occurs on chains. We offer special corrosion resistant mining chain options. By optimizing the alloy composition and surface treatment, the durability of the chain in damp and corrosive environments is significantly enhanced.
- Superior Fatigue Resistance: When the chain operates under cyclic loads, each tension and relaxation will accumulate fatigue damage. The O series fatigue resistant conveyor chain takes this into full consideration in design and manufacture. Through optimized geometry and defect-free welding process, the fatigue life of the chain is significantly improved to prevent premature failure under high-stress cycles.
Special Edition of O Series: Targeted Solutions
To meet the specific needs of different mines, GBC’s O series product line includes a variety of performance-enhanced versions, providing you with tailor-made solutions.
- Enhanced Version: For applications with extreme requirements for fatigue life, our enhanced version chain, through a special processing technique, can increase fatigue life by approximately 300%. This means that under the same working conditions, its service life may be more than three times that of a standard chain.
- Cor-O version: For mines with a high risk of stress corrosion (a failure mode caused by the combined effect of tensile stress and corrosive environment), we recommend using the Cor-O version. This version of the chain offers approximately 350% resistance to stress corrosion and is an ideal choice for ensuring safe production in high-salt and high-humidity mines.
- Ultra-flat Link Chain Series: This series of chains ensures longer wear resistance and service life by optimizing the contact surface design of the link links. A larger contact area means lower contact stress, thereby effectively slowing down the wear rate.
Main Application Areas of High Tensile Round Link Chain
The O series round link chains have a very wide range of applications, almost covering all underground mining and bulk material handling scenarios that require strong and reliable transportation.
| Longwall Mining | Plough Systems |
| This is its most core application. As the armoured face conveyor chain (AFC chain), it is responsible for transporting coal out of the entire working face and is the lifeline of the long-wall mining system. | In the mining of thin coal seams, plough chains require extremely high speed and wear resistance, and the O series chains are fully capable of meeting the requirements. |
| Shearer Haulage | Coal and Ash Handling |
| As the coal shearer haulage chain, it is responsible for pulling the heavy shearer to move back and forth on the working face, and has extremely high requirements for its strength and reliability. | The O series chains are also widely used in coal feeding systems and ash handling systems in scenarios such as power plants, and their durability is also applicable to these abrasive environments. |
Manufacturing Processes and Quality Standards
Every mining round link chain provided by GBC stems from the manufacturing concept of uncompromising quality. The high strength round steel link chain for mining we adopt is all made of high-purity special alloy steel. The entire manufacturing process strictly adheres to international standards, such as
The key manufacturing processes include:
- Precision forming and flash butt welding: Ensure that the geometry of each link is consistent, and there are no defects at the welding points, with strength comparable to that of the base material.
- Controlled atmosphere heat treatment: Quench and temper the chain to achieve the desired combination of hardness, strength and toughness.
- Pre-stretching and non-destructive testing: Each chain undergoes rigorous verification load tests and uses advanced non-destructive testing technology to ensure that the products delivered to you are flawless.
Contact Us Immediately to Obtain Your Customized Mining Chain Solution
Please do not let unreliable chains become the weak links in your production and operation. Invest immediately in the proven and high-performance GBC O series of mining round link chains to provide your equipment with the strength and durability it deserves.
Contact us immediately to discuss your specific needs. We will be more than happy to provide you with detailed technical consultation, product recommendations and competitive quotations. Let’s join hands and work together to enhance the efficiency and safety of your mining operations!
