Hitachi 4349519/1028946 Carrier Roller Assembly/Support Roller Assembly for EX1800, EX1900, XE2000 | Premium Quality by CQCTRACK-HELI

Maintain Optimal Track Alignment and Reduce Wear with a Premium Carrier Roller Assembly

CQCTRACK HELI presents a precision-engineered Carrier Roller Assembly (also known as Support Roller Assembly), designed as a direct, high-performance replacement for Hitachi part numbers 4349519 and 1028946. This critical undercarriage component is certified for compatibility with the Hitachi EX1800, EX1900, and XE2000 series of ultra-large mining shovels, machines where reliability under extreme loads is non-negotiable.

The carrier roller plays a vital role in the undercarriage system. It is mounted on the upper frame of the machine, supporting the weight of the track chain on its return pass and maintaining proper track alignment and tension. A high-quality carrier roller minimizes lateral track slippage, reduces excessive wear on track links and pads, and ensures smooth, efficient operation, directly impacting your machine’s productivity and total cost of ownership.

 Engineering Excellence & Key Features

• Exact OEM Interchangeability: Our assembly is manufactured to meet or exceed the original Hitachi specifications for dimensions, load ratings, and mounting interfaces. It guarantees a perfect fit and seamless integration with your EX1800/EX1900/XE2000 undercarriage system, ensuring a hassle-free installation process.
• Advanced Metallurgy and Heat Treatment: The roller wheel is crafted from high-grade, forged alloy steel. It undergoes a rigorous process of carburizing and quenching, which creates an exceptionally hard, wear-resistant outer surface while maintaining a tough, ductile core. This dual-property structure is essential for resisting abrasive wear from the track chain and withstanding the high-impact shocks encountered in mining environments.
• Precision-Machined Sealing Surfaces: The integrity of a roller is defined by its seals. We utilize a multi-tiered sealing system featuring precision-machined seal grooves. This ensures a perfect fit for high-performance lip seals, effectively locking in grease and preventing the ingress of abrasive contaminants like dust, mud, and slurry. This significantly extends the service life of the internal bushings and bearings.
• Heavy-Duty Bearing & Bushing System: At the heart of the assembly lies a robust bearing and bushing system, engineered to handle the immense radial loads from the track chain. The components are manufactured to ultra-precise tolerances, ensuring smooth rotation with minimal friction, which reduces heat generation and power loss.
• Corrosion-Resistant Finishing: The entire assembly is treated with a protective coating or phosphate finish to prevent rust and corrosion during storage and operation, preserving the component’s integrity from the warehouse to the pit.

 Technical Specifications & Compatibility

• OEM Part Numbers: 4349519, 1028946
• Manufacturer: CQCTRACK HELI
• Component Type: Carrier Roller Assembly / Support Roller Assembly
• Compatible Models:
  • Hitachi EX1800 Mining Shovel
  • Hitachi EX1900 Mining Shovel
  • Hitachi XE2000 Mining Shovel

 The CQCTRACK HELI Advantage

Choosing CQCTRACK HELI means investing in the longevity and efficiency of your heavy machinery. We specialize in manufacturing undercarriage components that are built to endure the most punishing applications. Our Carrier Roller Assembly is a product of sophisticated manufacturing technology, stringent quality control, and a deep understanding of the stresses faced by mining equipment. By selecting this part, you benefit from:

• Maximized Service Intervals: Engineered for extended life, reducing the frequency of replacements and associated downtime.
• Enhanced Machine Performance: Smoothly rotating rollers reduce track resistance, improving fuel efficiency and overall machine performance.
• Protection of Your Undercarriage Investment: A properly functioning carrier roller prevents misalignment, protecting your more expensive track chains, idlers, and sprockets from premature wear.
• Cost-Effective Solution: Experience OEM-level quality and performance at a competitive aftermarket price, offering exceptional value and a lower total cost of operation.

Call to Action:

Keep your Hitachi mining shovel on track and productive. Don’t let a failed carrier roller lead to costly secondary damage and unplanned downtime.

Contact us today to request a personalized quotation, verify stock availability, or speak with our technical experts. We are here to provide the reliable undercarriage solutions your operation depends on.