HYUNDAI 81EM-20010 R210 49L Track Link Assy –Mining quality Chassis Compoents Manufacturer and Supplier HELI(CQC TRACK)

1. Manufacturer Profile: Advanced R&D, Stringent QC, and Comprehensive Product Portfolio

We are HELI (CQC TRACK), a specialized manufacturer and supplier of heavy-duty undercarriage systems, operating on both ODM and OEM principles. Our focus is on engineering mining-quality chassis components that withstand the most severe operating environments.

• Engineering & Development: Our technical team leverages advanced metallurgical expertise and dynamic load simulation tools to design components for extreme duty cycles. For mining-specific applications, we conduct rigorous fatigue analysis and impact testing to ensure structural resilience far beyond standard requirements.
• Quality Assurance: Adhering to ISO-certified processes, our quality control begins with the selection of premium, high-tensile alloy steels. Throughout manufacturing, we employ non-destructive testing (NDT) methods like magnetic particle inspection, precise hardness testing across critical wear zones, and dimensional verification to guarantee every Track Link Assembly meets exacting mining-grade specifications.
• Complete Product Ecosystem: We supply a full range of matched undercarriage components, including track rollers, carrier rollers, idlers, sprockets, and track shoes. Our product line is structured to support the entire lifecycle of mining excavators and bulldozers, ensuring compatibility and performance synergy across all wear parts.

2. Product Specification: HYUNDAI 81EM-20010 R210 49L Track Link Assembly

This product is a Mining-Optimized Track Link Assembly (also known as a Track Chain Group) designed for the Hyundai R210 series excavator operating in mining and heavy quarrying applications.

• OEM Part Number: 81EM-20010.
• Host Machine: Hyundai R210 (typically 20-25 ton class excavator).
• Pitch & Size: 49L (indicating a specific link pitch and configuration). “L” often denotes a heavy-duty or long-pitch design for increased strength and debris shedding capability.
• Construction & Mining-Specific Features:
  • Forged & Heat-Treated Links: Main links and pin links are forged from specialized alloy steel and undergo controlled heat treatment (quenching and tempering) to achieve an optimal balance of surface hardness for wear resistance and core toughness for impact absorption.
  • High-Alloy Steel Bushings & Pins: The internal bushings and track pins are manufactured from chromium-molybdenum alloys. They are case-hardened to a deep, uniform hardness, providing exceptional resistance to abrasion and rotational wear—the primary failure mode in high-stress mining conditions.
  • Precision Interference Fit & Sealing: Pins and bushings are assembled with a precise interference fit and secured with robust retaining mechanisms (e.g., press-fit plus locking). Advanced Duo-Cone seal rings or multi-labyrinth seals are utilized to lock in high-performance grease and completely exclude abrasive contaminants like rock dust and slurry.
  • Optimized Link Design: The geometry of the links is engineered to enhance tensile strength, improve track guidance, and facilitate self-cleaning.

3. Maintenance, Installation, and Service Recommendations

• Maintenance: While designed as a sealed assembly, regular inspection is critical in mining applications. Monitor for pin migration (indicated by elongation of the overall chain), external bushing wear, and seal integrity. Track tension must be adjusted correctly—too tight accelerates wear, too loose causes whip and derailment risk.
• Installation: Replacement should be performed as a complete matched set (both left and right chains) to ensure even stress distribution and performance. It is imperative to simultaneously replace the drive sprocket and often the idler and rollers to prevent accelerated wear of the new chain from mismatched components. Use proper lifting equipment and follow OEM-specified procedures for track pin pressing and master link assembly.
• Expected Performance: In severe mining service, our track link assemblies are engineered to deliver superior service hours, minimizing unplanned downtime and reducing cost-per-hour of operation through extended wear life.

4. OEM Matching and Host Machine Integration Capability

Our OEM/ODM expertise ensures perfect host machine integration. For the Hyundai R210, we replicate not only the dimensional specifications but also the performance characteristics required by the original design. We analyze the machine’s operating weight, hydraulic drive torque, and typical load shocks in mining to validate our component’s suitability. This ensures our 81EM-20010 assembly delivers seamless compatibility, reliable performance, and maintains the machine’s designed stability and efficiency.

5. Associated Mining-Grade Undercarriage Components

For optimal performance and a single-source supply advantage, we provide a full suite of compatible, mining-enhanced components:

• Mining Sprockets (81EM-series): With hardened, deep-tooth profiles for positive engagement and extended life against the new chain.
• Heavy-Duty Track Rollers & Carrier Rollers: Featuring reinforced flanges, large-diameter seals, and high-capacity bearings.
• Reinforced Idlers (Guide Wheels): Built with robust structures to absorb forward impact loads.
• Wide Track Shoes (Grousers): Available in various widths and configurations (e.g., triple-grouser) for superior ground penetration and flotation in loose or rocky terrain.
• High-Strength Fasteners: Grade 10.9 or higher bolts and nuts designed to withstand intense vibration and loads.

6. Factory-Direct Sales Model and Flexible Commercial Terms

As a factory-direct manufacturer, we offer significant advantages in pricing, quality control, and supply chain transparency. We welcome bulk orders, project tenders, and long-term supply agreements for mining operations and large equipment fleets.

• Payment Terms: We support flexible and secure international payment methods, including T/T (Telegraphic Transfer), L/C (Letter of Credit), and competitive financing options for major contracts.

Conclusion
The HYUNDAI 81EM-20010 R210 49L Track Link Assembly from HELI (CQC TRACK) embodies our commitment to providing durable, mining-optimized undercarriage solutions. By combining superior materials, precision engineering, and a full-system approach, we deliver components that maximize equipment availability and productivity in the world’s most demanding mining applications. Contact our engineering sales team for technical specifications, competitive pricing, and customized supply chain solutions.