D6H D6R SALT Sealed Lubricated Track Chain Assembly with 35MnBH Alloy Steel and HRC 40-55 for Caterpillar Bulldozer

The D6H D6R SALT (Sealed And Lubricated Track) chain assembly is engineered for Caterpillar D6H and D6R bulldozers operating in demanding earthmoving and construction environments. Manufactured from premium 35MnBH alloy steel with advanced forging and precision machining, this track chain delivers exceptional durability and extended service intervals. The sealed lubrication system retains oil within the pin-to-bushing interface while preventing abrasive contaminants from entering, significantly reducing internal wear and maintaining consistent track tension over thousands of operating hours. YinTai has been producing undercarriage components for over 35 years, serving distributors and equipment owners across more than 50 countries worldwide.

• Sealed Lubricated Design: Each link incorporates a lifetime lubricated pin and bushing assembly with double-cone seals that prevent oil leakage and block external abrasives, extending pin/bushing life by up to 40% compared to dry chains.
• Premium 35MnBH Alloy Steel: Specially selected boron-treated manganese steel provides an optimal balance of core toughness and surface hardenability, resisting impact deformation while supporting high surface hardness after heat treatment.
• Advanced Heat Treatment: Through quench-and-temper processing achieves uniform hardness of HRC 40-55 across the entire link body, with an effective case depth of 4-10 mm for maximum wear resistance in abrasive soil and rock conditions.
• Precision CNC Machining: Horizontal and vertical CNC machining centers ensure exact dimensional tolerances for pin bore alignment, link pitch consistency, and bolt hole positioning, guaranteeing smooth track rotation and sprocket engagement.
• Direct Compatibility: Designed as a drop-in replacement for OEM Caterpillar D6H and D6R track chain assemblies, matching original equipment specifications for pitch (203.2mm), link height, and bushing diameter.
• Rigorous Quality Inspection: Every track chain undergoes magnetic particle inspection for surface defects, dimensional verification with CMM equipment, and assembly test-fitting before shipment to ensure 100% conformance to specifications.

YinTai employs a vertically integrated production system to deliver consistent quality at every stage. The manufacturing begins with raw 35MnBH steel billets sourced from ISO-certified Chinese steel mills, verified via spectrometer analysis for exact chemical composition. Link bodies are hot-forged at 1150-1200°C using 2500-ton forging presses, creating a refined grain structure that enhances fatigue strength by 30% over cast alternatives. Following forging, links undergo normalizing at 880°C to relieve internal stresses, then precision machining on multi-axis CNC centers for pin bores, bolt holes, and mating surfaces within ±0.05mm tolerance. Pins and bushings are induction-hardened at medium frequency to achieve a surface hardness of HRC 58-62 with a tough ductile core. The complete assembly is fitted with double-cone polyurethane seals, filled with SAE 30 lubricating oil, and pressurized to verify seal integrity before final inspection.

YinTai Parts brings over 35 years of specialized experience in excavator and bulldozer undercarriage component manufacturing. Our factory in Quanzhou, Fujian Province spans 20,000 square meters with 150+ skilled workers and 6 dedicated production lines. We hold ISO9001:2008 and CE certifications, with an in-house metallurgical laboratory equipped with spectrometer, universal testing machine, and Rockwell/Brinell hardness testers. Annual production capacity exceeds 50,000 track chain assemblies. Our sales office in Xiamen handles international logistics with sea freight departures from Xiamen Port every week. We serve distributors and fleet operators in Southeast Asia, Middle East, Africa, South America, and Eastern Europe with consistent quality and competitive factory-direct pricing.

Our D6H/D6R track chain assembly is purpose-built for medium-to-heavy bulldozer applications across multiple industries. In construction and infrastructure development, these chains maintain reliable traction during grading, backfilling, and site preparation on mixed soil and gravel terrain. For mining and quarry operations, the sealed design prevents fine abrasive particles from accelerating internal wear, reducing undercarriage maintenance frequency and maximizing machine uptime. In forestry and land clearing, the high-strength forged links resist impact loading from stumps, rocks, and uneven ground. Fleet operators benefit from standardized replacement intervals and reduced inventory complexity when sourcing both dry and sealed track chain variants from a single supplier.

• Bulldozer undercarriage systems for Caterpillar D6H, D6M, D6R, D6T models
• Earthmoving and grading operations in construction projects
• Mining overburden removal and quarry material handling
• Forestry and land clearing with high impact loading
• Road construction and highway maintenance
• Agricultural land reclamation and terracing

Q: Are YinTai track chains compatible with OEM Caterpillar specifications?
Yes. Our D6H/D6R track chain assemblies are manufactured to match OEM dimensions including pitch (203.2mm), bushing diameter, pin diameter, and link height. They are direct bolt-on replacements requiring no modifications to the existing undercarriage frame.

Q: What is the advantage of SALT (Sealed And Lubricated Track) over dry chains?
SALT chains retain lubricant inside the pin-to-bushing interface with double-cone seals, reducing internal friction by approximately 60% compared to dry chains. This translates to 30-40% longer service life, quieter operation, and reduced track tension adjustment frequency.

Q: What warranty do you provide?
We offer an 18-24 month warranty from the date of shipment against manufacturing defects in materials and workmanship under normal operating conditions. Warranty claims are processed within 7 business days with supporting photographic evidence.

Q: Can you supply custom link configurations for non-standard track frames?
Yes. Our engineering team can design and manufacture track chain assemblies to match customer-provided drawings, sample links, or specific dimension requirements. MOQ for custom designs starts at 50 assemblies.

Q: How do you package track chains for international shipping?
Each track chain assembly is wrapped in anti-rust VCI paper, secured to a wooden pallet with steel strapping, and enclosed in heavy-duty export-grade plywood crating. Palletized loads are optimized for container stuffing to minimize freight costs.

Every D6H/D6R track chain undergoes a 6-point inspection protocol: chemical composition verification, dimensional accuracy check, hardness testing (5 points per link), magnetic particle flaw detection, assembly fitment test, and final visual inspection. Products are packed with VCI anti-rust wrapping, secured to fumigated wooden pallets, and crated for sea freight. Each shipment includes a detailed inspection report with heat lot traceability. With 35 years of manufacturing heritage, YinTai delivers consistent quality that equipment owners and distributors can rely on for mission-critical undercarriage applications.