Komatsu PC300-7 Track Chain Link Assembly 35MnBH Boron Steel HRC 50-56 with 216mm Pitch for Heavy-Duty Excavators

Product Description

The Komatsu PC300-7 (Salt Chain) Track Chain Link Assembly (207-32-00350) is a premium undercarriage replacement component engineered for heavy-duty excavators and bulldozers operating in demanding construction, mining, and earthmoving environments. Manufactured from 35MnBH Boron Steel and heat treated to HRC 50-56, this track chain link assembly delivers exceptional wear resistance and extended service life compared to standard aftermarket alternatives.

Each assembly includes 46L track links with matched pins, bushings, and hardware — ready for direct installation. The 216mm pitch configuration ensures precise fitment and smooth track operation.

Technical Specifications

Key Features

• Premium Material: 35MnBH Boron Steel with optimized carbon and boron content for superior tensile strength and impact resistance
• Advanced Heat Treatment: Full through-hardening followed by induction quenching on critical wear surfaces, achieving uniform HRC 50-56 hardness
• Precision Manufacturing: CNC-machined link bodies with tight tolerances ensuring perfect pin and bushing alignment
• OEM Compatibility: Engineered to match original equipment dimensions for seamless installation without modifications
• Sealed Lubricated Design: Each pin and bushing is permanently lubricated and sealed, eliminating daily greasing requirements and extending service intervals in high-abrasion environments
• Extended Service Life: 2-3x longer operating hours compared to budget aftermarket alternatives in abrasive conditions
• Anti-Rust Protection: Protective coating applied to all surfaces to prevent corrosion during ocean freight and outdoor storage

Factory Introduction

Xiamen Yintai Machinery Co., Ltd. has been a trusted name in construction machinery undercarriage parts manufacturing since 2011. With nearly 30 years of combined industry experience, our factory in Quanzhou, Fujian Province, spans over 15,000 square meters and houses advanced CNC machining centers, induction hardening lines, and a dedicated quality control laboratory.

We specialize in track chain links, track shoes, idlers, rollers, and sprockets for leading brands including Komatsu, Caterpillar, Hitachi, Volvo, Hyundai, Shantui, and XCMG. Our products are exported to over 60 countries across Southeast Asia, the Middle East, Africa, South America, and Europe.

Core Strengths: In-house forging and casting capabilities, ISO 9001:2015 certified QC system, 90%+ export ratio, and a dedicated engineering team supporting custom requirements.

Applications

Frequently Asked Questions