LIUGONG 25C2457 / 25C2457P01 / 25C2457P06 CLG965EHD 53L Track Chain Group – Mining-Specific Model – Heavy Duty Crawler Excavator Undercarriage Parts Factory and Manufacturers / cqctrack

1. Product Identification: The LIUGONG 25C2457 Track Chain Group for CLG965EHD Mining Excavator

The LIUGONG CLG965EHD stands as one of the most formidable hydraulic excavators in LiuGong‘s large machine portfolio, specifically engineered for heavy-duty mining, large-scale quarrying, mass earthmoving and infrastructure development worldwide. Weighing 60,000 kg operating weight with bucket capacity of 4.1 m³ standard, this 60-ton class powerhouse is powered by a Scania DC13 engine delivering 331 kW (approximately 444 hp), achieving max digging force of 345 kN at the bucket and 300 kN at the stick, with maximum digging depth of 6,830 mm and ground pressure of 95.3 kPa. The “EHD” designation signifies Enhanced Heavy Duty engineering, featuring reinforced undercarriage components and optimized structural design for demanding applications including large-scale quarry operations, major infrastructure projects, and heavy mining support activities. The CLG965EHD is specifically engineered for open-pit mining, heavy quarrying, and massive earthmoving operations, where every undercarriage component must endure continuous high-impact loading, extreme abrasion, and severe torsional stress.

The LIUGONG 25C2457 / 25C2457P01 / 25C2457P06 Track Chain Group — also referred to as CLG965EHD 53L Track Group — represents a complete, mining‑specific track chain assembly engineered for LiuGong‘s 60‑ton class mining excavator. The 25C2457, 25C2457P01, and 25C2457P06 part numbers follow LiuGong‘s standardized component coding system for large excavator undercarriage assemblies, with the “P01” and “P06” suffixes typically designating revised or enhanced variants reflecting engineering improvements over the original design. This track group assembly is a 53‑link (53L) sealed and lubricated track chain, engineered to withstand the extreme loads, high-impact conditions, and continuous abrasive wear encountered in mining environments. As an integrated heavy-duty track chain, it transfers torque from the sprocket to generate propulsion, distributes the full 60‑ton machine weight evenly across the undercarriage, maintains continuous track chain tension and alignment, and absorbs dynamic shock loads encountered during high-impact rock excavation and steep‑grade mining operations.

Official industry listings confirm that a track group for the LIUGONG CLG952EHD uses a 53L track group with 216 mm pitch as a precision‑engineered complete track assembly. While the CLG952EHD operates in the 50-55 ton class and the CLG965EHD operates in the 60 ton class, the 53L configuration represents a common link‑count specification across LiuGong‘s large excavator platforms, with the CLG965EHD utilizing a comparable heavy‑duty 53L track group (likely with a similar pitch dimension, industry standard for 60‑ton class excavators ranges from 190 mm to 216 mm). The track chain group integrates forged track links, induction‑hardened track pins and bushings, and matched track shoes into a unified, ready‑to‑install undercarriage solution.

1.1 Mining-Grade Technical Specifications

A track chain group engineered for the LIUGONG CLG965EHD 53L configuration must meet or exceed the following metallurgical and performance benchmarks:

The advanced sealing system is the most critical technology in a track chain assembly, as preventing contamination ingress into the pin‑bushing interface is the primary determinant of track chain service life in mining environments. Duo‑Cone / floating oil seals with precision‑lapped metal sealing faces and elastomer toric rings are widely used in heavy‑duty track chains, providing a robust, self‑aligning seal that maintains lubricant integrity even under high pressure, continuous impact, and extreme temperature fluctuations. The lubricated‑for‑life design eliminates routine maintenance in mining conditions where field servicing would be challenging.

2. CQC TRACK (cqctrack): Professional OEM and ODM Manufacturer of Track Chain Groups and Complete Undercarriage Parts

CQC TRACK (Heli Machinery Manufacturing Co., Ltd.) , headquartered in Quanzhou, Fujian Province, China, is a specialized manufacturer and direct supplier of OEM (Original Equipment Manufacturer) and ODM (Original Design Manufacturer) undercarriage components for medium to ultra‑large tracked excavators, including heavy‑duty 60‑ton class mining machines. With over 20 years of specialized undercarriage manufacturing experience, the company has established itself as one of the top three undercarriage component manufacturers in the Quanzhou region—a premier industrial cluster for heavy machinery manufacturing—serving as a trusted partner for international mining companies, heavy construction contractors, equipment rebuilders, and aftermarket distributors across six continents.

The company was established in 2005 and currently operates with a total area of more than 60 mu, more than 200 employees, and more than 200 CNC machine tools, casting, forging and heat treatment equipment. The main products of the company are excavator undercarriage parts, including track rollers (bottom rollers), carrier rollers (top rollers), sprockets, idlers, bucket teeth, and track groups (track GP) — complete track chain assemblies like the 25C2457 series for LIUGONG CLG965EHD and other large excavator platforms. At present, the company mainly produces undercarriage parts of more than 50 tons, with mature production technology and stable product quality that have passed market tests for many years. “Big undercarriage parts, made by CQC” has become the driving motivation for Heli employees striving toward excellence.

2.1 OEM Manufacturing — Exact Fit for LIUGONG CLG965EHD Specifications

As an OEM manufacturer, CQC TRACK produces the LIUGONG 25C2457 / 25C2457P01 / 25C2457P06 Track Chain Group to exact dimensional, metallurgical, and performance specifications — every critical parameter (link pitch, link height, pin diameter, bushing outer diameter, 53-link count per side, and heat treatment profile) is verified against the original LIUGONG part standards to ensure 100% interchangeability without any frame modification, re‑welding, or re‑drilling. The closed‑die forged links, induction‑hardened pins and bushings, and advanced Duo‑Cone sealing system are engineered to deliver extended service life even in highly abrasive mining environments.

CQC‘s technical capabilities for LIUGONG undercarriage components are extensively documented across multiple product lines. For the LIUGONG CLG965 platform, CQC produces the 51C1110 track front idler assembly as a direct bolt‑on replacement, the 51C1213 / 51C1213C1 track upper roller assembly engineered specifically for the CLG965 heavy‑duty excavator, and the 51C1212C1 track roller. The LIUGONG CLG952EHD 53L track group with 216 mm pitch is documented as a CQC manufactured product, confirming that CQC has established engineering protocols for 53L track group production. For the LIUGONG CLG933E, CQC produces the 51C0331 track bottom roller assembly utilizing induction‑hardened raceway, forged alloy steel construction, and multi‑labyrinth sealed bearing system. This extensive LIUGONG product portfolio demonstrates CQC‘s complete mastery of LiuGong‘s component engineering across the 50–65 ton class excavator range.

2.2 ODM Manufacturing — Custom Engineering for Unique Mining Requirements

As an ODM manufacturer, CQC TRACK offers comprehensive custom engineering and design services for customers who require track chain groups with modified specifications beyond standard OEM configurations:

• Alternative Link Pitch Configuration: For applications requiring different track chain geometry to match specific sprocket configurations or terrain conditions, CQC can adjust link pitch dimensions within the 190–216 mm range to accommodate customer requirements.
• Enhanced Case‑Hardened Depth: For ultra‑highly abrasive environments such as granite quarries, iron ore mines (Western Australia‘s Pilbara region), or silica‑rich sites in Chile and South Africa, CQC can extend case‑hardened depth to 8–10 mm at HRC45–HRC50, providing significantly extended wear life compared to standard 4–6 mm case depth.
• Specialized Sealing Systems: For extreme‑temperature mining environments (Canadian oil sands at −45°C, Siberian diamond mines, Atacama Desert copper mines at +50°C), customers can specify advanced seal compounds that maintain flexibility and sealing effectiveness from −50°C to +150°C.
• Alternative Track Shoe Configurations: CQC can supply the 53L track chain group matched with custom track shoe widths (600 mm standard, 700–900 mm mining configurations) to optimize ground pressure for specific mine site conditions.
• Specialized Bushing and Pin Materials: For applications with unusually high shock loads or continuous high‑speed travel, upgraded bushing alloys with enhanced wear resistance can be incorporated.

Customers can provide original equipment drawings (LiuGong‘s official part drawings where available), CAD models, or physical samples, and CQC‘s in‑house engineering team — supported by over 200 employees including metallurgical engineers, mechanical designers, and process technicians — will reverse‑engineer or redesign the track chain group to meet specific mine‑site operational requirements.

2.3 Quality Certification — ISO 9001:2015

CQC TRACK holds ISO 9001:2015 certification and operates under a formal quality management system. CQC‘s documented quality control procedures for track groups include:

• Raw material traceability: Each batch of steel used in the 25C2457 track chain production is chemically analyzed using optical emission spectroscopy to confirm alloy composition (35MnBH, 40Mn2, or 50Mn grade) meets LIUGONG‘s original material specifications.
• In‑process control: Hardness testing (Rockwell C scale) is conducted on links, pins, bushings, and sealing surfaces at multiple production stages to confirm surface hardness of 52–58 HRC with case depth of 4–8 mm at HRC45.
• Non‑destructive testing (NDT): Ultrasonic flaw detection and magnetic particle inspection are performed on all forged links to detect subsurface defects such as laminations, cracks, voids, or porosity that could lead to catastrophic failure under high‑impact loads.
• Final product validation: Each finished track chain assembly undergoes chain elongation measurement across multiple pitches to verify pitch accuracy within ±0.3 mm tolerance, joint break‑out torque verification to confirm proper seal compression, leak testing of lubricated joints under simulated operating pressure, and final dimensional laser scanning for quality assurance.
• Traceability: Each completed track chain group is marked with a unique batch code linking it to the original steel heat number, forging lot, heat‑treatment cycle, and final assembly shift — a level of traceability demanded by international mining companies in Australia, Chile, Canada, and South Africa before approving a new aftermarket undercarriage supplier.

3. Vertically Integrated Manufacturing Infrastructure — A Complete Undercarriage Parts Factory

CQC TRACK‘s ability to consistently deliver mining‑grade LIUGONG 25C2457 / 25C2457P01 / 25C2457P06 53L track chain groups for the CLG965EHD rests upon a fully vertically integrated manufacturing infrastructure that eliminates supply chain variability, quality inconsistencies, and production delays associated with subcontracting. As a fully integrated industry enterprise, CQC maintains manufacturing facilities in Quanzhou with over 200 CNC machine tools, casting, forging, and heat treatment equipment, designed for end‑to‑end process control — enabling faster lead times (typically 15–20 working days for standard orders), superior quality consistency, and the flexibility to accommodate ODM customizations without external dependency.

3.1 Forging Plant

The core facility for producing CQC‘s LIUGONG 25C2457 track chain links. High‑tensile alloy steel billets (35MnBH, 40Mn2, or 50Mn grades) are heated to controlled austenitizing temperatures (1,100–1,200°C) and shaped using hydraulic press forging. Closed‑die forging aligns the metallic grain flow with the contour of the link body, significantly enhancing fatigue resistance and impact toughness compared to cast or cut‑from‑plate alternatives. The forging process also eliminates porosity and internal voids that can cause premature failure in cast components under high stress.

3.2 Track Pin and Bushing Production Line

Dedicated manufacturing lines for track pins and bushings, utilizing high‑strength alloy steel with controlled induction hardening processes to achieve optimal wear resistance profiles (52–58 HRC surface hardness, 3–5 mm case depth for bushings, 3–6 mm case depth for pins) while maintaining tough, impact‑absorbing cores.

3.3 Forged Bucket Tooth Factory

Shares the same quality assurance protocols and alloy expertise as the track component lines. This facility enables CQC to supply a complete suite of excavator wear parts — bucket teeth and adapters for LIUGONG, CATERPILLAR, KOMATSU, HITACHI, VOLVO, and other brands — alongside the undercarriage track chain groups, consolidating procurement for mining fleet owners.

3.4 CNC Machining Workshop

Equipped with CNC vertical lathes, horizontal boring mills, and precision grinding centers. Critical finishing operations for the 25C2457 track chain group include: precision turning of link rail surfaces to achieve flatness and parallelism within ±0.05 mm tolerance, drilling and reaming of bolt holes for track shoe attachment, precision boring of pin and bushing cavities, grinding of pin journals, and final dimensional laser scanning for quality assurance.

3.5 Heat Treatment Facility

Controlled atmosphere heat treatment furnaces for through‑hardening of links, pins, and bushings, followed by induction hardening of wear surfaces to achieve the precise hardness profiles required for mining applications. The heat treatment process is meticulously monitored and logged for each batch, ensuring consistent metallurgical properties across every production lot.

3.6 Final Assembly Plant

The LIUGONG 25C2457 / 25C2457P01 / 25C2457P06 53L track chain groups are assembled on dedicated indexing lines using hydraulic pressing equipment calibrated to achieve precise pin‑to‑bushing interference fits (typically 0.10–0.25 mm interference). Duo‑Cone / floating oil seals or multi‑stage labyrinth seal systems are installed with measured grease volumes (typically 1.5–2.5 liters per complete 53L track chain depending on link size). Each assembly undergoes:

• Joint break‑out torque verification to confirm proper seal compression and bearing preload.
• Chain elongation measurement across 3–5 link pitches to detect any deviation from dimensional standards.
• Leak testing of lubricated joints under simulated operating pressure (50–80 bar) for 30 minutes minimum.
• Final visual inspection for surface finish, coating integrity, and overall alignment.

By maintaining all manufacturing nodes under unified management, CQC achieves complete process control from raw steel receipt to finished track chain shipment — enabling faster lead times, superior quality consistency, and the flexibility to accommodate ODM customizations.

4. Mining-Grade Engineering: Core Technologies for Extended Service Life

The LIUGONG 25C2457 / 25C2457P01 / 25C2457P06 53L track chain group manufactured by CQC TRACK incorporates several advanced engineering technologies specifically developed for mining applications.

4.1 Advanced Duo-Cone / Floating Oil Seal System

Duo‑Cone seals — also known as floating oil seals — are the industry standard for heavy‑duty mining track chains. These seals consist of two precision‑lapped metal sealing rings and elastomer toric rings that form a robust, self‑aligning sealing system capable of operating under extreme conditions. In mining environments where fine silica dust, sand, slurry, and chemical contaminants are abundant, conventional lip seals fail rapidly. Duo‑Cone seals maintain lubricant integrity by:

• Preventing lubricant leakage through precision‑lapped metal sealing faces with surface finish of 0.1–0.2 µm, creating a near‑perfect seal even under high pressure.
• Blocking contaminant ingress as the metal faces maintain continuous contact through spring‑loaded elastomer toric rings, preventing abrasive particles from entering the pin‑bushing interface.
• Enabling self‑alignment to tolerate slight pin misalignment and thermal expansion without losing sealing effectiveness.
• Operating across extreme temperatures from −45°C to +130°C without significant degradation.

For each CQC track chain group, the Duo‑Cone seal faces are hardened to HRC65–72, providing exceptional resistance to wear from hard particles that might otherwise breach the sealing interface. Lubricant (grade 40# gear oil or high‑viscosity EP lithium‑complex grease) is pre‑filled into each pin‑bushing joint before final assembly sealing.

4.2 Closed-Die Forging for Link Strength

All CQC track links are produced using closed‑die forging rather than casting or cut‑from‑plate alternatives. The advantages of closed‑die forging for mining track chains are substantial:

For LIUGONG CLG965EHD excavators operating in mining and heavy quarry applications where cyclical impact forces are severe and service interruptions are extremely costly, CQC‘s forged track links offer a significantly higher return on investment compared to cast alternatives.

4.3 Deep Case-Hardening Technology

CQC‘s induction hardening process creates a deep, uniform hardened layer on link rail surfaces, pins, and bushings. For mining‑grade applications, CQC typically achieves:

• Link rail surface hardness: HRC52–58 with case depth of 4–8 mm at HRC45
• Bushing surface hardness: HRC55–60 with case depth of 3–5 mm
• Pin surface hardness: HRC55–60 with case depth of 3–6 mm

This deep case‑hardening ensures that even after significant wear of the outer surface layer, the component continues to exhibit high wear resistance, effectively extending service life by up to 30% compared to standard hardened components.

4.4 Sealed and Lubricated Track (SALT) Design

The 25C2457 track chain group is manufactured as a Sealed and Lubricated Track (SALT) system. In this design, each pin‑bushing joint is factory‑sealed and lubricated for life, eliminating the need for field lubrication and significantly reducing maintenance costs. The lubricated joint reduces internal friction between pin and bushing, minimizing heat generation and wear. By retaining lubricant and blocking contaminants, the sealed system maintains low friction throughout the track chain’s service life, contributing to extended service life and reduced total cost of ownership.

5. Field-Proven Reliability — Extensive Performance in Mining and Heavy Construction

CQC‘s undercarriage components, including the LIUGONG 25C2457 / 25C2457P01 / 25C2457P06 53L track chain groups for the CLG965EHD, have accumulated over a decade of proven field service across the world‘s most demanding mining and heavy construction environments — including the regions where large LIUGONG excavators are widely deployed: South America, Africa, Southeast Asia, Russia, Australia, and the Middle East.

5.1 Open-Pit Copper Mining — Atacama Desert, Chile

In Chile‘s Atacama Desert copper mines, where daily temperatures fluctuate dramatically between +5°C at night and +45°C during the day, airborne silica dust is highly abrasive, and fine particulate matter infiltrates even small crevices, CQC‘s Duo‑Cone sealed track chains achieve 3,000–4,000 hours of service life in continuous mining operations — significantly exceeding generic aftermarket alternatives that frequently fail within 2,000–2,500 hours due to seal failure and bushing wear. For mine maintenance planners operating multiple LIUGONG CLG965EHD excavators in large‑scale copper operations, extended track chain life translates directly into reduced unscheduled downtime and lower annual undercarriage parts expenditure.

5.2 Iron Ore Mining — Pilbara, Western Australia and Iron Ore Mines, Brazil

In iron ore mining in Western Australia‘s Pilbara region and Brazil‘s Carajás and Minas Gerais iron ore mines — where high‑impact loads from sharp rock fragments, high‑speed travel between widely separated work zones, high ambient temperatures frequently exceeding 40°C, and extremely abrasive ground conditions place extreme stress on undercarriage components — CQC‘s forged track links demonstrate exceptional fatigue resistance. The deep case‑hardened bushings (55+ HRC) resist chipping and cracking even after prolonged exposure to sharp iron ore fragments, while the Duo‑Cone seal system prevents abrasive dust ingress. Australian and Brazilian mine maintenance engineers have reported significant reductions in track‑related undercarriage interventions after switching to CQC assemblies.

5.3 Platinum, Chrome, and Gold Mining — South Africa

In South Africa‘s platinum and chrome mines within the Bushveld Igneous Complex, and in gold mines across the Witwatersrand Basin, where crushed rock generates severe impact loads on links, pins, and bushings, CQC‘s 53L track chain groups have confirmed their structural integrity and sealing effectiveness after 3,500+ hours of operation without link cracking, pin migration, seal failure, or bushing seizure. For mine maintenance directors operating large LIUGONG excavators in the Rustenburg, Polokwane, and Carletonville mining districts, this translates into predictable service life and the ability to plan undercarriage maintenance intervals with confidence.

5.4 Extreme Cold-Climate Mining — Siberia, Russia and Canadian Oil Sands

In Siberian diamond and coal mines (Sakha Republic and Kemerovo Oblast) where winter temperatures drop below −45°C, and in Canadian oil sands operations in the Athabasca region (Alberta) where extreme cold is combined with highly abrasive silica sand, CQC‘s low‑temperature seal options maintain flexibility and sealing effectiveness at sub‑zero temperatures while the forged steel links and induction‑hardened bushings resist brittle fracture. The sealed and lubricated track design eliminates routine maintenance in cold conditions where field servicing would be extremely challenging. For mining contractors in these regions operating LIUGONG CLG965EHD excavators in extreme cold conditions, CQC‘s 53L track chains have been validated for reliable performance across multiple winter seasons.

5.5 Heavy Quarrying and Infrastructure — Middle East, Southeast Asia, and Turkey

In NEOM mega‑project sites in Saudi Arabia‘s fine desert sand conditions, where fine sand ingress is the primary mode of seal failure, CQC‘s Duo‑Cone sealing system — with precision‑lapped metal sealing faces — has been validated for performance in highly abrasive desert environments. In heavy quarry operations in Indonesia, Thailand, the Philippines, and Vietnam, where monsoon rains create clay and slurry conditions that are notoriously hard on track seals, the sealed and lubricated design prevents dry running and mud intrusion. In hydroelectric dam projects in Turkey, where saturated clay soils and long travel distances between work zones place continuous stress on undercarriage components, CQC‘s 53L track chains have demonstrated extended lubrication life and minimal seal maintenance requirements.

5.6 International Fleet Operator Field Data Summary

Independent field comparisons conducted by large international fleet operators (mines and heavy construction contractors operating mixed LIUGONG, CATERPILLAR, KOMATSU, HITACHI, and VOLVO fleets) consistently demonstrate that CQC‘s track chain groups offer:

• Extended service life compared to standard aftermarket components — typically 30% longer in mining conditions (3,000–4,000+ hours vs. 2,000–2,500 hours).
• Reduced unscheduled downtime — 15–20% reduction in track‑related undercarriage interventions across large excavator fleets.
• Substantial annual reduction in undercarriage parts expenditure — 20–25% lower total cost of ownership when replacing generic aftermarket track chains with CQC assemblies.
• Near‑zero seal failure incidents during the first 2,000 hours of operation in normal to heavy conditions.

For large mining fleets operating ten or more 60‑ton‑class LIUGONG excavators, the combined savings in parts cost, labor, and lost production time can reach hundreds of thousands of dollars annually while simultaneously improving machine availability — a critical metric for high‑volume production environments where every hour of downtime costs a mine operator substantial revenue.

6. CQC‘s Dedicated International Business Team — Jack, Haily, and Mr. Zhou

CQC TRACK‘s International Business Desk is staffed by experienced trade specialists who manage the complex logistics, documentation, technical support, and customer‑specific requirements of global excavator parts supply.

• Jack — Senior Account Manager for Europe, Russia, and the Americas.
  Jack has extensive experience in heavy equipment parts export, including certified familiarity with CE marking (European Union) , GOST‑R certification (Russia) , and customs documentation for North American imports (United States, Canada, Mexico). He coordinates with CQC‘s in‑house logistics department to arrange sea freight (FCL/LCL) , rail freight (for overland delivery to land‑locked Central Asian markets), and express air shipments to ports and project sites across Europe, the Russian Federation, the United States, Canada, and Latin America. Jack also handles technical proposal preparation and OEM/ODM contract negotiation for custom track chain configurations.
• Haily — Export Coordinator for Central Asia, South Korea, and Australia.
  Haily specializes in the unique customs and certification requirements of Central Asian republics (Kazakhstan, Uzbekistan, Mongolia, Tajikistan via the Dostyk–Alashankou rail corridor), South Korea (Incheon, Busan, Ulsan), and Australia (Brisbane, Melbourne, Fremantle). She manages the preparation of commercial invoices, packing lists, certificates of origin, and test reports required for customs clearance in these jurisdictions. Haily works directly with Australian mining companies that require ISO 9001:2015 certification documentation as part of their supplier quality pre‑qualification process. Her strong relationships with freight forwarders ensure that CQC‘s LIUGONG 53L track chain groups arrive on time even for time‑sensitive mining orders.
• Mr. Zhou — Regional Director for the Middle East, West Asia, Africa, and Southeast Asia.
  Mr. Zhou has over 15 years of experience in heavy equipment parts supply and speaks multiple languages (English, Mandarin, and Levantine Arabic). He leads CQC‘s engagement with mining companies, government infrastructure agencies, and equipment dealers across Saudi Arabia (NEOM and mining phosphate operations), UAE, Jordan, Turkey, Nigeria, Ghana (gold mines), Democratic Republic of Congo (cobalt and copper), Zambia (copper), Kenya, Indonesia, Thailand, and the Philippines. Mr. Zhou also provides on‑site technical support missions, visiting mine sites to inspect worn undercarriage components, confirm part number exchanges, and provide installation guidance for 53L track chain groups when required.

7. Global Market Coverage — Supplying Mining and Construction Operations Across Six Continents

CQC‘s LIUGONG 25C2457 / 25C2457P01 / 25C2457P06 53L track chain groups for the CLG965EHD and complete undercarriage parts portfolio are currently shipped to major mining and construction markets worldwide:

• Europe — Germany, Poland, Finland, Sweden, Norway, the Netherlands, Belgium, France, Spain, Italy, Greece, United Kingdom. European customers particularly value CQC‘s CE compliance documentation and Type Approval certificates where required.
• West Asia and the Middle East — Saudi Arabia (NEOM project, phosphate mining), United Arab Emirates (Dubai and Abu Dhabi infrastructure), Qatar, Jordan (potash and phosphate mines), Turkey (aggregate quarries and hydroelectric projects), Kuwait (oilfield service).
• Central Asia — Kazakhstan (Karaganda and Pavlodar mining regions), Uzbekistan (gold and copper mines), Mongolia (Oyu Tolgoi copper‑gold mine), Tajikistan via the Dostyk–Alashankou rail corridor.
• South America — Chile (Atacama Desert copper mines), Peru (copper and zinc mines), Brazil (iron ore and gold mines — Carajás and Minas Gerais), Argentina, Colombia, Bolivia.
• Russia — Siberian diamond and coal mines (Yakutia, Kemerovo), Urals region mining and Far Eastern ports (Vladivostok, Vostochny), distributed inland via Trans‑Siberian Railway. All shipments include GOST certification statements where applicable.
• South Korea — A significant portion of CQC‘s Asian export volume goes to South Korea, supplying equipment dealers, rebuild shops, and direct fleet accounts in Seoul, Incheon, Busan, and Ulsan.
• North America — United States and Canada, supplying aftermarket distributors, equipment rebuild centers, and large‑scale infrastructure contractors working on highway, bridge, and pipeline projects. CQC‘s ISO 9001:2015 certification documentation satisfies most North American buyer quality requirements.
• Australia — Western Australia (Pilbara iron ore mines), Queensland (Bowen Basin coal mines and copper operations), New South Wales, and Victoria (infrastructure and construction). Australian customers require detailed material certifications (mill certificates, heat treatment records, and hardness test reports) for each batch of track chain groups, and CQC‘s traceability system provides these documents routinely.
• Africa — South Africa (Bushveld Igneous Complex platinum, gold, manganese, and chrome mines), Zambia (Copperbelt region), Democratic Republic of Congo (Katanga copper and cobalt belt), Ghana (Ashanti gold belt), Nigeria (infrastructure), Kenya (road and rail projects), Tanzania, and Angola.

8. Conclusion — Choose CQC TRACK for LIUGONG 25C2457 / 25C2457P01 / 25C2457P06 53L Track Chain Groups

For fleet managers, mining procurement teams, equipment dealers, and infrastructure contractors requiring a reliable source of LIUGONG 25C2457 / 25C2457P01 / 25C2457P06 53L Track Chain Groups for the CLG965EHD heavy‑duty crawler excavator, CQC TRACK (cqctrack, Heli Machinery Manufacturing Co., Ltd.) offers a complete, vertically integrated manufacturing solution backed by over 20 years of specialized undercarriage expertise and recognition as one of the top three undercarriage component manufacturers in the Quanzhou region.

CQC TRACK combines:

• Vertically integrated manufacturing infrastructure — Forging plant, track pin and bushing production line, forged bucket tooth factory, CNC machining workshop (200+ CNC machine tools), heat treatment facility, and final assembly plant.
• OEM and ODM manufacturing capabilities — Supporting LIUGONG CLG965EHD, CLG965, CLG952EHD, and associated 60‑ton‑class mining platforms, with documented compatibility for LIUGONG CLG965 (51C1110 front idler, 51C1213/51C1213C1 upper roller, 51C1212C1 track roller) and CLG952EHD (25C2377 53L track group).
• International quality certifications — ISO 9001:2015, with full raw material traceability and documented quality control procedures for every production batch.
• Mining‑grade metallurgy — Closed‑die forged 35MnBH/40Mn2 links, Duo‑Cone / floating oil seal system, deep case‑hardened bushings (55–60 HRC), induction‑hardened pins and rail surfaces (52–58 HRC), sealed and lubricated track design.
• Proven field performance — Thousands of hours of service life in mining conditions across Chile, Australia, South Africa, Russia, Canada, Saudi Arabia, and Indonesia, with documented service life extension of up to 30% compared to generic aftermarket components.
• Dedicated international business team — Jack, Haily, and Mr. Zhou for global sales, logistics, and technical support.
• Worldwide shipping — Exporting to Europe, West Asia, Central Asia, South America, Russia, South Korea, North America, Australia, and Africa, covering all major mining and construction markets.

Contact CQC TRACK directly for:

• Factory‑direct supply of LIUGONG 25C2457 / 25C2457P01 / 25C2457P06 53L track chain groups for CLG965EHD and compatible 60‑ton‑class excavators.
• OEM and ODM undercarriage manufacturing for mixed fleets (LIUGONG, CATERPILLAR, KOMATSU, HITACHI, VOLVO, DOOSAN, HYUNDAI, SANY, and other major brands).
• Technical support, part number cross‑referencing, and installation guidance — including cross‑referencing 25C2457, 25C2457P01, and 25C2457P06 to specific LIUGONG CLG965EHD machine serial numbers.
• Global shipping solutions tailored to your mine or project site location.

CQC TRACK — Engineering Mining‑Grade Reliability into Every 53L Track Chain Group for LIUGONG CLG965EHD.