35MnBH Steel Excavator Track Chain Link with HRC 40-55 Hardness and 190.0 mm Link Pitch for Caterpillar 320-330 Series

The CAT320-CAT330-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.

• Caterpillar OEM Specification Design: Engineered to replicate the dimensional specifications and material performance characteristics of genuine Caterpillar undercarriage components, providing a cost-effective aftermarket alternative without compromising on fit, function, or service durability.
• Through-Hardened Link Body: The complete link body is processed through our multi-stage heat treatment line with precise temperature control and automated quenching, achieving consistent HRC 40-55 hardness distribution throughout critical load-bearing sections for maximum structural integrity.
• Magnetic Particle Inspected Surfaces: Every production link undergoes magnetic particle inspection on all critical surfaces to detect micro-cracks or forging defects before they can develop into field failures, ensuring only defect-free components are shipped to our customers worldwide.
• Optimized Sprocket Engagement Profile: The link drive face geometry is precision-machined to match Caterpillar sprocket tooth profiles, ensuring smooth power transmission with minimal shock loading and reduced sprocket wear during acceleration, deceleration, and directional changes.
• Consistent Batch-to-Batch Quality: Our statistical process control system monitors key parameters including hardness, dimensional accuracy, and material composition for every production batch, maintaining quality consistency that equipment fleet managers can rely on for predictable maintenance scheduling.
• Global Logistics Support: With regular container shipments to major ports in the Middle East, Southeast Asia, Africa, and South America, we maintain reliable delivery schedules and can consolidate orders with other undercarriage components to optimize shipping costs for international buyers.

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 track chain link assembly is designed for Caterpillar 320 and 330 series hydraulic excavators, covering the most widely deployed 20-35 ton excavator platforms in the global construction equipment market. These links serve general contractors, mining operations, rental equipment fleets, and government infrastructure projects requiring dependable undercarriage performance. The forged and heat-treated construction handles the demanding duty cycles of trenching, basement excavation, road construction, pipe laying, and material handling with consistent reliability. Equipment dealers stocking aftermarket parts for Caterpillar excavators benefit from our competitive wholesale pricing structure and stable supply chain that supports year-round inventory availability.

Q: Are these links compatible with both Caterpillar B, C, and D series excavators?

Yes, our CAT 320 CAT 330 track chain links are designed to be compatible across Caterpillar 320B, 320C, 320D, 323, and 330B, 330C, 330D series excavators. The track chain specifications remained consistent through these model series iterations. Please confirm your specific machine serial number prefix when ordering for final verification.

Q: How does your link quality compare to OEM Caterpillar parts?

Our track chain links are manufactured to meet or exceed the material specifications and dimensional tolerances of OEM parts using 35MnBH forged steel with HRC 40-55 heat treatment. While we provide a cost-effective aftermarket alternative, our quality control processes ensure reliable field performance comparable to OEM specifications under normal operating conditions.

Q: What is the minimum order quantity for international shipments?

Our minimum order quantity is 1 complete set (pair of track chain assemblies) or a mixed container load combining track chains with other undercarriage components such as track rollers, idlers, and sprockets. We offer flexible mixed-container options to help international buyers optimize their logistics costs.

Q: Can I order a sample set before placing a bulk order?

Yes, we welcome sample orders for quality evaluation before committing to bulk purchases. A single complete track chain pair can be shipped via air freight or express courier for urgent evaluation. Sample pricing includes a small premium for low-volume handling, which is credited against the first bulk order.

Q: What warranty support do you provide for track chains operated in extreme conditions?

Our standard 18-24 month warranty covers manufacturing defects and premature wear under normal operating conditions. For extreme applications such as hard rock mining, demolition, or continuous high-impact work, we recommend our heavy duty track chain variant with enhanced material specifications. We evaluate warranty claims based on photographic evidence and inspection reports from our authorized distributors.

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.