35MnBH Steel Track Chain Link with HRC 40-55 Hardness and 190.0 mm Link Pitch for Komatsu Excavator Undercarriage

The PC200-PC300-TL Track Chain Link is a premium undercarriage component manufactured by YT (YinTai Parts), engineered for demanding excavator and bulldozer applications across construction, mining, and earthmoving projects. With over 35 years of manufacturing expertise based in Quanzhou, Fujian, China, our factory produces track chain links that meet stringent OEM specifications for major equipment brands worldwide.

Each track chain link is forged from 35MnBH high-grade alloy steel and undergoes a rigorous heat treatment process to achieve surface hardness levels of HRC 40-55 with a hardened depth of 4-10 mm. This advanced metallurgical treatment ensures exceptional wear resistance, extended service life, and reliable performance even in abrasive working conditions commonly encountered in mining, quarrying, heavy construction, and forestry operations.

• Heavy Duty Forged Construction: Each link is hot-forged from 35MnBH alloy steel under 2500-ton press force, achieving a dense grain structure that provides superior resistance to bending, cracking, and fatigue failure during heavy excavation and rock handling applications.
• Optimized Heat Treatment Profile: Our proprietary heat treatment cycle combines controlled carburizing depth with precise tempering parameters to deliver HRC 40-55 surface hardness while maintaining a tough, impact-resistant core structure capable of absorbing shock loads from rock breaking and demolition work.
• Enhanced Bushing Bore Design: Precision-honed bushing bores with optimized surface finish and dimensional accuracy ensure consistent interference fit, preventing bushing walk-out and maintaining track pitch uniformity throughout the entire service life of the chain assembly.
• Extended Wear Life Performance: The combination of 35MnBH material selection, deep case hardening, and shot peening surface treatment delivers wear life that matches or exceeds OEM specifications, reducing total cost of ownership for equipment fleet managers.
• Wide Model Compatibility Range: Compatible with Komatsu PC200-6, PC200-7, PC200-8, PC200LC, PC300-6, PC300-7, PC300-8, and PC300LC series excavators, covering the most popular 20-30 ton class machines in global construction and mining fleets.
• ISO-Certified Manufacturing Facility: Produced in our ISO 9001:2008 certified factory in Quanzhou, Fujian, with complete material traceability from raw steel billet to finished product, ensuring consistent quality across all production batches shipped worldwide.

At YT(YinTai Parts), our manufacturing process begins with the careful selection of 35MnBH steel raw material sourced from certified Chinese steel mills. The steel billets are heated to precise forging temperatures of 1100-1200 degrees Celsius in computer-controlled induction furnaces before being shaped under 2500-ton forging presses. Each link blank undergoes precision machining on CNC milling centers to achieve exact dimensional tolerances within ±0.1mm accuracy. The critical heat treatment stage involves austenitizing at 850-880 degrees Celsius followed by controlled oil quenching and tempering to achieve the specified HRC 40-55 surface hardness with 4-10mm hardened case depth. After heat treatment, every link passes through shot blasting for surface cleaning and stress relief. Final quality inspection includes magnetic particle testing for surface defects, ultrasonic testing for internal integrity, and coordinate measuring machine verification of all critical dimensions against OEM specifications.

YT (YinTai Parts) has been a trusted manufacturer of construction machinery undercarriage components since 1988, accumulating over 35 years of industry experience from our production base in Quanzhou, Fujian Province. Our 50,000-square-meter manufacturing facility is equipped with advanced forging lines, CNC machining centers, automated heat treatment furnaces, and comprehensive material testing laboratories. We hold ISO 9001:2008 quality management certification and CE certification for our exported products, ensuring compliance with international quality and safety standards. Our dedicated R&D team of 25 engineers continuously works on material improvements and design optimization to extend product service life. With an annual production capacity exceeding 120,000 track chain link assemblies, we serve distributors, equipment dealers, and end users in over 60 countries across Southeast Asia, the Middle East, Africa, South America, and Europe. Our in-house logistics team manages container loading, customs documentation, and international shipping coordination to ensure timely delivery worldwide.

This heavy duty track chain link assembly is engineered for Komatsu PC200 and PC300 series hydraulic excavators deployed in heavy construction, infrastructure development, quarry operations, demolition work, and material handling applications. The robust forged construction withstands the demanding conditions of rock excavation, slope work, and high-production earthmoving where undercarriage components experience sustained impact and abrasive wear. Mining contractors operating Komatsu fleets benefit from the consistent quality and reliable interchangeability of our links during planned maintenance overhauls, while equipment dealers value the competitive pricing and stable supply chain that supports their parts inventory programs.

Q: Will these links fit both standard and long carriage (LC) versions of Komatsu excavators?

Yes, our PC200 PC300 track chain links are compatible with both standard and long carriage (LC) undercarriage configurations for Komatsu PC200 and PC300 series excavators. The link dimensions and pin/bushing interfaces remain identical; only the number of links per side differs between standard and LC configurations.

Q: How does the link pitch affect overall track performance?

The 190.0mm link pitch is matched to the OEM specification for Komatsu PC200/PC300 series machines. Using the correct pitch is essential for proper sprocket engagement, smooth track rotation, and even load distribution across the entire track chain assembly. Incorrect pitch can cause accelerated sprocket wear and vibration issues.

Q: Can these links be used in wet or marshy working conditions?

Yes, our track chain links perform well in wet and marshy conditions. The heat-treated surface hardness and anti-corrosion coating provide adequate protection against moisture-induced rusting. For permanently submerged or highly corrosive environments such as saltwater or acidic mining runoff, we recommend more frequent undercarriage cleaning and inspection intervals.

Q: What is your production lead time for large quantity orders?

Standard production lead time is 15-25 days for orders up to 500 assemblies. For larger quantities exceeding 500 assemblies, lead time may extend to 25-35 days depending on current production schedule. We maintain safety stock for popular models to support urgent orders with 7-10 day dispatch times.

Q: Do you offer customized branding or private labeling on track chain links?

Yes, we offer OEM-neutral packaging and can apply custom branding, part number stamping, and color coding according to customer specifications. Minimum order quantities may apply for customized branding services. Contact our sales team with your specific requirements for a tailored quotation.

All track chain link assemblies are packaged in export-grade wooden pallets or steel crates with protective anti-rust coating applied to all machined surfaces before shipment. Each pallet is clearly labeled with product model, quantity, batch number, and manufacturing date for easy identification and inventory management. We offer comprehensive warranty coverage of 18-24 months from the date of shipment against manufacturing defects and premature wear under normal operating conditions. In the unlikely event of a warranty claim, our technical support team provides prompt response within 24 hours and arranges replacement parts shipment within 7 working days. Custom packaging options including branded packaging, retail-ready box packaging, and OEM neutral packaging are available upon request to meet specific distribution channel requirements.