Liugong CLG965 53L Track Link Assembly/Heavy duty Crawler excavator undercarriage components manufactuer-DPW Machinery Parts
| ||||||||||||||||||||||||||
Product Specifications
The DPW Machinery Parts Track Link Assembly for the Liugong CLG965 is a consumable masterpiece of mechanical engineering. Its design, incorporating a 53-pitch configuration and utilizing forged, precision-machined, and strategically hardened components, is built to endure the extreme pressures and abrasion of heavy-duty loading applications. By replicating OEM specifications with high-quality materials and manufacturing rigor, DPW provides a durable and reliable aftermarket solution that is critical for maintaining the productivity and mobility of the Liugong CLG965 wheel loader. Proper track tension and regular inspection are essential to maximize the service life of this vital undercarriage assembly.
1. Component Overview and Functional Definition
The Liugong CLG965 Track Link Assembly, manufactured by DPW Machinery Parts, is a fundamental and consumable segment of the crawler undercarriage system. This assembly is not a single part but a pre-assembled unit comprising multiple links, pins, and bushings that form a section of the machine's continuous track chain. Designed specifically for the Liugong CLG965 crawler wheel loader, its primary functions are:
Power Transmission & Traction: To engage with the sprocket's teeth and directly transmit the engine's power into forward or reverse motion, providing the machine's traction.
Ground Pressure Distribution: To create a large footprint, distributing the machine's immense weight over a greater area. This results in low ground pressure, enabling stable operation on soft or uneven terrain like mud, sand, and clay.
Structural Integrity: To form a durable, continuous "path" that supports the machine's weight as it rolls over the idler, rollers, and sprocket, withstanding immense shock loads and abrasive forces.
The "53-Pitch" specification is critical, referring to the number of chain links per track side. A 53-pitch chain has 53 links per track, defining the total length and engagement characteristics with the sprocket.
2. Detailed Mechanical Structure and Component Breakdown
This assembly's robustness comes from the synergistic operation of its four key hardened components. DPW Machinery Parts manufactures these to precise specifications for direct OEM interchangeability.
2.1. Track Link (or Main Link / Track Shoe Base)
Material: Fabricated from high-carbon, high-manganese steel (e.g., ZGMn13 or equivalent BORON steel) known for its high tensile strength and exceptional work-hardening properties.
Manufacturing Process: Forged for superior grain structure and integrity, then machined to precise dimensions. The critical wear surfaces are subjected to induction hardening.
Hardness Profile:
Induction Hardened Surfaces: The rail guides (the "feet" that contact the rollers) and the sprocket engagement ramps are hardened to 50-60 HRC for maximum resistance to abrasive wear.
Core Material: The core of the link remains tough and ductile at a lower hardness (~30-40 HRC) to absorb impact loads without brittle fracture.
Bolt Holes: Precision-drilled and counterbunk holes are provided for the secure mounting of the track shoe (grouser).
2.2. Track Bushing (or Outer Bushing)
Material: Alloy steel (e.g., AISI 4115H), carburized or through-hardened.
Function: This component is a thick-walled, hollow cylinder that is press-fit into the track link. It serves as the outer raceway for the sprocket teeth and the primary wear surface against the bottom rollers.
Hardening Process: The outer diameter is typically through-hardened or deeply carburized to achieve a uniform hardness of 55-62 HRC, ensuring long life under the constant grinding action of the sprocket and rollers.
2.3. Track Pin (or Link Pin)
Material: High-grade alloy steel (e.g., AISI 8620), selected for its core toughness and case-hardening capability.
Function: The pin is the "hinge" of the chain, inserted through the bushing and the adjacent link, allowing for articulation between links.
Hardening Process: The pin undergoes case carburizing. This creates an extremely hard, wear-resistant outer surface (58-64 HRC) to resist wear at the rotating joint with the bushing, while maintaining a tough, shock-resistant core to prevent bending or shear failure.
2.4. Track Sleeve (or Inner Bushing / Sealing Sleeve)
Material: Typically a medium-carbon steel, hardened and ground.
Function: This is a critical component of the sealed and lubricated track chain design. It is pressed over the track pin and rotates inside the bushing. Its primary roles are:
To provide a precision, hardened surface for the sealing system to ride on.
To create the actual rotating joint with the bushing.
In Lubricated Track systems, it contains the internal grease.
2.5. Sealing System (for Lubricated Chains)
If this assembly is designed as a lubricated chain, it includes a sophisticated sealing package:
Primary Seal: A Radial Lip Seal or Mechanical Face Seal that creates a dynamic barrier between the pin and the link.
O-Rings: Static seals that prevent grease from escaping between the pin and the sleeve or link.
Retaining Rings: Secure the entire assembly together and maintain seal compression.
3. Key Manufacturing and Performance Features of DPW Machinery Parts
Precision Machining: DPW ensures precise bore alignment for the pins and bushings, which is critical for smooth articulation and preventing premature "snaking" or misalignment wear.
Heat Treatment Expertise: The controlled hardening processes (induction, carburizing) are crucial for achieving the optimal balance of a hard, wear-resistant surface and a tough, impact-resistant core.
OEM Interchangeability: This assembly is engineered to match the original Liugong CLG965 specifications for pitch, width, pin diameter, and bolt pattern, ensuring a perfect fit and performance.
Material Traceability: As a reputable aftermarket manufacturer, DPW typically utilizes certified raw materials with traceable chemical compositions to ensure consistent quality and performance.
