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Understanding the Euclid R35 Off-Highway Haul Truck: Specifications, Legacy, and Maintenance Insights
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Introduction
The Euclid R35 off-highway haul truck stands as a testament to the evolution of heavy-duty mining and construction equipment. Manufactured by Euclid, a company renowned for pioneering off-road haulage solutions, the R35 model encapsulates the blend of robust engineering and innovative design that characterized Euclid's legacy.
Historical Context and Evolution
Euclid Trucks, established in 1909, revolutionized the earthmoving industry with their specialized off-road vehicles. In 1953, General Motors acquired Euclid, integrating their engineering expertise and expanding the reach of Euclid's products. This acquisition marked a significant shift, introducing GM's 2-stroke Detroit Diesel engines into Euclid's lineup, although Cummins engines remained available for some time. In 1984, Daimler-Benz purchased Euclid, and later, in 1993, a joint venture with Hitachi Construction Machinery was formed, leading to the eventual phase-out of the Euclid name by 2004.
The R35 model emerged during this transformative period, reflecting the advancements in materials, engine technology, and operational efficiency. Its design aimed to meet the growing demands of the mining industry for larger payload capacities and enhanced durability.
Specifications of the Euclid R35
The Euclid R35 was engineered to handle the rigorous demands of off-road hauling. Key specifications include:
  • Engine: Cummins KT19-C
    • Rated Output: 450 hp
    • Displacement: 1,147 cu in (18,801 cu cm)
    • Max Torque: 1,406 lb-ft (1,906 Nm)
    • Number of Cylinders: 6
    • Power Measured @ 2,100 rpm
  • Dimensions:
    • Overall Length: 27 ft (8 m)
    • Overall Width: 12 ft (4 m)
    • Overall Height: 14 ft (4 m)
    • Wheelbase: 12 ft (4 m)
    • Ground Clearance: 2 ft (1 m)
  • Dump Capacity:
    • Heaped: 31 cu yd (23 cu m)
    • Struck: 22 cu yd (17 cu m)
  • Payload Capacity: 36.6 t
  • Operating Weight: 28.4–66.2 t
  • Tire Size: 18.00-33
These specifications positioned the R35 as a formidable presence in mining operations, capable of transporting substantial loads across challenging terrains.
Legacy and Impact
The Euclid R35, along with its predecessors and successors, played a pivotal role in shaping the landscape of off-road haulage. Euclid's commitment to innovation led to the development of larger and more efficient haul trucks, setting industry standards for decades. The R35's robust design and operational capabilities made it a preferred choice for mining operations worldwide.
Maintenance and Restoration Considerations
Maintaining and restoring a vintage Euclid R35 requires a comprehensive understanding of its mechanical systems and access to specialized parts. Common areas of focus include:
  • Engine Overhaul: Given the age of the engine, components such as pistons, rings, and bearings may require replacement to restore optimal performance.
  • Hydraulic System: Inspecting and refurbishing hydraulic pumps and cylinders is crucial, as seals and hoses degrade over time.
  • Electrical Systems: Rewiring may be necessary, especially if the original wiring has deteriorated.
  • Structural Integrity: Checking the frame and dump bed for cracks or signs of stress is essential to ensure safety and functionality.
Sourcing original parts can be challenging due to the model's age, but specialized suppliers and salvage yards may offer compatible components.
Conclusion
The Euclid R35 off-highway haul truck stands as a symbol of engineering excellence and innovation in the heavy equipment industry. Its specifications reflect the advanced design principles of its time, and its legacy continues to influence modern off-road hauling solutions. For enthusiasts and professionals dedicated to preserving and restoring vintage machinery, the R35 offers a rewarding project that honors the rich history of Euclid Trucks.
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Understanding the Euclid R35 Off-Highway Haul Truck: Specifications, Legacy, and Maintenance Insights - by MikePhua - 08-13-2025, 05:34 PM

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