Drop Forged X678 Chain | DCC
DCC X678 Chain is a heavy-duty transmission solution designed for high-load scenarios in mining, metallurgy, cement, and ports. With a 153.2mm pitch and 318KN tensile strength, it handles substantial dynamic loads at 9.5kg/m. The 51.6mm sidebar width and 7° bending angle enable smooth turns and long-distance conveyance in stacker-reclaimers, scraper conveyors, and bucket elevators.
Key Features of DCC X458 Chain
● Large Pitch Heavy-Duty Architecture: 153.2mm pitch with 22.3mm pin diameter reduces meshing impact, suitable for large sprockets in low to medium speeds (0.3-2.5m/s), addressing common issues like skipping or breakage in standard chains.
● High-Strength Lightweight Design: 9.5kg/m weight achieves 318KN breaking strength, reducing equipment inertia and motor load for energy efficiency.
● Extreme Condition Stability: 51.6mm sidebar width and high-frequency quenched pins maintain balance under frequent impacts, minimizing deformation.
● Flexible Curve Navigation: 7° sideward bending angle supports horizontal turns and multi-level conveyance without extra guides, saving space.
● Superior Wear and Corrosion Protection: Full high-frequency quenching on pins, bushings, and rollers plus galvanization or coating (8-12μm thickness) enhances resistance in high-humidity, corrosive environments like ports and open mines.
● Automated Robotic Welding: 100% robotic welding ensures uniform weld points, improving fatigue resistance and eliminating manual inconsistencies.
Technical Specifications of DCC X678 Chain
Chain No. | Reference pitch P (mm) | Diameter of pin d2 (mm) | Length of pin L (mm) | Standard length (min/max) (mm) | Number of pitch within standard length | Sideward bending angle α (°) | Width of sidebar h2 (mm) | Tensile strength (KN) | Weight per meter (kg/m) |
X678 | 153.2 | 22.3 | 77 | 3055.1/3082.8 | 20 | 7 | 51.6 | 318 | 9.5 |
Why Choose DCC X678 Chain?
Extended Service Life: High-frequency heat treatment, automated welding, and anti-corrosion surface treatment extend lifespan significantly over ordinary brands, reducing downtime and total cost of ownership.Heavy-Duty Reliability: 153.2mm pitch and 318KN strength prevent stretching and skipping during heavy starts in scrapers and elevators, improving system stability.Extreme Environment Resilience: Retains toughness at -40°C to avoid brittle fracture and strength at +300°C, suitable for year-round operation in ports, steel plants, and mines.Low Maintenance: Low wear rate extends lubrication intervals, saving on oil and labor costs.Low-Noise Operation: Precision design keeps noise below industry averages, enhancing work environments.Proven Heavy-Duty Performance: With 20+ years in chain manufacturing, DCC's X678 Chain serves global heavy projects in mining, steel, and cement with consistent quality.
Application Scenarios of DCC X458 Chain
● Mining and Bulk Transport
Bucket elevators, buried scraper conveyors, stacker-reclaimers
● Metallurgy and Steel
Sintering trolleys, hot/cold material lines, slag handling systems
● Cement and Building Materials
Clinker scrapers, coal powder conveyance, kiln tail elevators
● Ports and Terminals
Ship unloaders, stackers, long-distance reclaimers
● Power and Energy
Boiler slag removal chains, fly ash conveyance systems
Certification and Standards of DCC X458 Chain
The company has obtained multiple international quality certifications, including ISO 9001 and CE certification. Each batch of X678 Chain products undergoes rigorous dimensional inspection, tensile testing, and fatigue analysis to ensure compliance with DIN, ANSI, and ISO standards, providing reliable quality assurance and full traceability to customers worldwide.
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Why choose DCC?
● Excellent Quality Assurance System
Our company has successfully obtained API and ISO 9001 certifications, ensuring that all X678 Conveyor Chain products meet international standards with consistent quality and performance.
● Efficient Service and Superior Cost-effectiveness
DONGCHUAN chains establish extensive collaboration with Changzhou University for Digital Design and Production Engineering of Chain Transmission, significantly improving production efficiency and effectively reducing production costs.
● International Service and Global Customer Support
In the course of more than 10 years of operation, we have provided consistent quality and cost-effective X678 Conveyor Chain solutions to more than 40 countries and regions around the world, winning wide trust and praise.
● Innovation and Continuous Improvement
Committed to technological innovation and continuous improvement, we consistently stay at the forefront of industry technology development with advanced manufacturing processes for X678 Conveyor Chain production.
● After-sales Service
We focus not only on short-term cooperation but also on establishing long-term, stable partnerships with our clients. Our X678 Conveyor Chain products come with a warranty period of up to 24 months.
FAQ
Q: How does X678 differ from X458/X348?
A: X678 offers higher 318KN strength for 5-30 ton heavy loads, ideal for mining and metallurgy extremes, unlike lighter-duty X348 or X458.
Q: What loads can the 318KN tensile strength handle safely?
A: With an 8:1 safety factor, it supports substantial continuous dynamic and intermittent peak loads for most scraper and elevator needs.
Q: Can X678 withstand high-salt environments like ports?
Q: What are the lubrication intervals for X678?
A: Protective coatings allow extended intervals over standard chains, depending on conditions.
