VOVLO VOE14674580 EC350D-EC350E 216pitch Track Link Assembly-Mining quality heavy duty excavator chassis component-manufatured by cqctrack(HELI)

Volvo VOE14674580 EC350D-EC350E 216-Pitch Track Link Assembly – Technical Specification & Product Overview

Product Identity & Application
The Volvo VOE14674580 is a heavy-duty Track Link Assembly (also known as an Undercarriage Track Chain) specifically engineered for Volvo EC350D and EC350E large excavators operating in severe applications, most notably in mining, quarrying, and large-scale earthmoving. This assembly features a 216mm pitch, denoting the center-to-center distance between two consecutive link pins, which is a critical dimension for compatibility and performance. Manufactured by CQCTrack (HELI) under stringent quality protocols, this component is built to mining-quality standards, offering superior durability and extended service life in abrasive and high-impact environments.

Detailed Structural Composition & Design Features

A single Track Link Assembly is not a monolithic piece but a precision-assembled system of interconnected, forged components. Each assembly (for one side of the machine) consists of multiple individual links joined to form a continuous chain.

1. Master Links / Track Links:
   • Material: Manufactured from premium alloy steel (typically 35MnBh, or equivalent) via closed-die forging, ensuring optimal grain flow for maximum strength and impact resistance.
   • Design: Each link is a robust, roughly rectangular forging with precisely machined features:
     • Bushing Bore Housings: Two precision-honed cylindrical bores at each end to press-fit and retain the track bushing.
     • Pin Bore Housings: Adjacent to the bushing bores, these house the track pin.
     • Link Sidebars: The vertical raised sections that guide and align the track chain on the idler and sprocket.
     • Pin Retention Features: Includes counterbores or grooves to secure the pin retainers (seals and snap rings).
2. Track Bushing (or Outer Sleeve):
   • Material: Case-hardened alloy steel (e.g., 40CrNi2MoA). The surface is carburized or induction hardened to a high Rockwell hardness (typically HRC 58-62) for exceptional wear resistance against the sprocket teeth.
   • Function: Pressed into the link’s bushing bore. It serves as the primary wearing surface for the sprocket engagement and rotates around the track pin.
3. Track Pin:
   • Material: High-grade, through-hardened alloy steel (e.g., 42CrMo). Heat-treated to achieve a core toughness that withstands bending and shear stresses, with a hardened surface for wear resistance.
   • Function: The central shaft that connects two adjacent links. It passes through the bushing of one link and the pin bore of the next, forming a rotating joint.
4. Sealing & Lubrication System (Durable Grease or Sealed/Lubricated Type):
   • O-Rings & Dust Seals: Multi-layered seals (typically polyurethane and nitrile rubber compounds) are installed at both ends of the bushing-pin interface. They create a robust barrier against abrasive contaminants (soil, sand, slurry) and retain lubricant.
   • Grease Reservoir: In lubricated chains, the annular space between the pin and bushing is filled with high-temperature, high-pressure lithium-complex grease, providing continuous lubrication to minimize internal friction and wear.
   • Retainers: High-strength snap rings or engineered end caps secure the entire pin/bushing/seal assembly within the link, preventing axial movement.
5. Link Height & Width: Designed to exact OEM specifications to ensure perfect alignment with the EC350D/E’s rollers, idlers, and sprocket, minimizing sideload and abnormal wear.

Mining-Quality Enhancements & Manufacturing Process (CQCTrack/HELI)

• Enhanced Material Specifications: Uses specially formulated alloys with higher levels of chromium, nickel, and molybdenum compared to standard-duty chains, providing better hardenability and fatigue strength.
• Advanced Heat Treatment: Utilizes computerized controlled atmosphere carburizing furnaces and induction hardening processes. This guarantees a deep, uniform case hardness for wear surfaces while maintaining a ductile, shock-absorbing core.
• Precision Machining: CNC machining centers ensure critical tolerances for bore diameters, parallelism, and center distances (±0.25mm or better for pitch accuracy). This precision is vital for smooth articulation, proper track tension, and reduced vibration.
• Stringent Quality Control: The manufacturing process at CQCTrack (HELI) includes:
  • Spectrometer Analysis: Verifies raw material chemistry.
  • Ultrasonic Testing: Detects internal flaws in forgings.
  • Magnetic Particle Inspection: Reveals surface cracks.
  • Hardness Depth Profiling: Confirms correct heat treatment penetration.
  • Dimensional Verification: Full inspection using coordinate measuring machines (CMM) and gauges.
• Optional Hardfacing: For extreme abrasion conditions, the link sidebars and/or bushing surfaces can be fitted with additional hardfacing (using tungsten carbide deposits) to prolong life significantly.

Performance Characteristics & Compatibility

• Superior Load Capacity: Engineered for the high dynamic loads and shock forces generated by the 35-ton+ EC350D/E excavators during digging, lifting, and tramming over rough terrain.
• Abrasion Resistance: The hardened surfaces of the bushing and pin, combined with the effective sealing system, combat the primary wear mechanisms in mining environments.
• Reduced Internal Friction: The sealed and lubricated design minimizes power loss through the undercarriage and lowers operating temperatures.
• Direct OEM Interchangeability: The VOE14674580 assembly is manufactured to match the exact dimensions, pitch, and performance specifications of the genuine Volvo® part, ensuring a perfect fit and optimal performance on the designated machine models.

About the Manufacturer: CQCTrack (HELI)
CQCTrack is the dedicated undercarriage manufacturing division of HELI Group, a leading Chinese industrial conglomerate. It operates state-of-the-art production facilities specializing in forged undercarriage components for excavators, bulldozers, and crawler cranes. The company holds ISO 9001 certification and employs full-process manufacturing (from forging to final assembly), ensuring strict control over quality and supply chain integrity. Their products are recognized globally in the aftermarket for offering a reliable, high-value alternative to OEM parts.

Conclusion
The Volvo VOE14674580 EC350D-EC350E 216-Pitch Track Link Assembly by CQCTrack (HELI) represents a critical, high-performance chassis component engineered for maximum uptime in demanding mining applications. Its robust forged construction, precision machining, advanced heat treatment, and effective sealing system deliver the necessary durability, strength, and wear resistance to withstand the most challenging operating conditions, providing a cost-effective and reliable undercarriage solution for Volvo EC350 series excavator owners and operators.