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Hitachi ZX70-5G Excavator - Equipment Original Specifications
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The Hitachi ZX70-5G is a versatile and robust crawler excavator, designed to deliver exceptional performance in a variety of construction and digging applications. With its impressive power, advanced hydraulic systems, and precision engineering, the ZX70-5G is an ideal choice for operators who demand reliability and efficiency. In this article, we will explore its key specifications, features, and performance capabilities.
Basic Information
  • Brand: Hitachi
  • Model: ZX70-5G
  • Year of Manufacture: 2014
  • Operating Hours: 12,000 hours
  • Location: Luoyang, Henan, China
The ZX70-5G is a mid-sized machine designed for digging, lifting, and trenching tasks, offering a balance between power and efficiency. It’s particularly favored for its versatility in urban construction projects, mining operations, and infrastructure work.
Key Specifications
Weight and Size
  • Operating Weight: 6,700 kg
  • Bucket Capacity: 0.33 m³
These figures place the ZX70-5G in the compact class, allowing it to maneuver through tight spaces while still handling heavy-duty tasks effectively.
Engine and Power
  • Engine Model: Yanmar 4TNV98-AVHBW
  • Rated Power: 42.4 kW at 2,100 rpm
  • Cooling Method: Water-cooled
  • Cylinder Configuration: 4 cylinders
  • Displacement: 3.318 L
  • Engine Type: 4-stroke, water-cooled, direct injection
The engine's power is sufficient for medium-duty digging and lifting tasks, and the direct injection system ensures fuel efficiency and low emissions.
Hydraulic System
The ZX70-5G’s hydraulic system is a key factor in its impressive performance. It uses a variable displacement axial piston pump and gear pump, allowing for precise control of lifting and digging movements.
  • Main Pump Flow: 2×63 + 1×52.5 l/min
  • Working Hydraulic Pressure: 26 MPa
  • Pilot Circuit Pressure: 3.9 MPa
  • Bucket Cylinder Dimensions: 85 mm × 55 mm
  • Arm Cylinder Dimensions: 95 mm × 60 mm
  • Boom Cylinder Dimensions: 115 mm × 65 mm
These features allow the machine to execute digging and lifting tasks with smooth, consistent hydraulic performance, enhancing operational efficiency.
Performance Characteristics
Ground Pressure
  • Ground Pressure: 31 kPa
    • This relatively low ground pressure ensures the machine can work in softer ground conditions without sinking, making it highly effective in urban construction sites.
Digging Force
  • Bucket Digging Force: 55 kN
  • Arm Digging Force: 40 kN
These forces indicate the strength and efficiency of the excavator’s digging capabilities, ideal for both trenching and heavy material handling.
Travel Speed
  • High Speed: 5.0 km/h
  • Low Speed: 3.4 km/h
These travel speeds provide a good balance between mobility and stability, ensuring that the excavator can navigate rough terrain while maintaining operational efficiency.
Gradeability
  • Gradeability: 70% (35°)
The ZX70-5G can easily handle slopes up to 35°, which is useful for applications in uneven terrain or construction sites with inclined surfaces.
Dimensions
The machine is built for compactness and maneuverability, with the following dimensions:
  • Transport Length: 6,080 mm
  • Transport Width: 2,260 mm
  • Transport Height: 2,600 mm
  • Ground Clearance: 360 mm
  • Track Length: 2,765 mm
  • Track Gauge: 1,750 mm
  • Track Width: 450 mm
  • Total Width: 2,200 mm
These dimensions allow the ZX70-5G to easily navigate confined job sites while maintaining stability during operation.
Working Range
The ZX70-5G excels in its ability to reach and dig in challenging conditions:
  • Maximum Digging Radius: 6,320 mm
  • Maximum Digging Depth: 4,170 mm
  • Maximum Digging Height: 7,150 mm
  • Maximum Unloading Height: 5,060 mm
  • Maximum Vertical Digging Depth: 3,730 mm
With these specifications, the ZX70-5G can handle tasks that require significant depth and reach, such as trenching, foundation digging, and landscaping.
Fuel and Oil Capacity
To ensure long operational hours without interruptions, the ZX70-5G features substantial fluid capacities:
  • Fuel Tank Capacity: 135 L
  • Hydraulic Oil Tank Capacity: 60 L
  • Engine Oil Capacity: 12.3 L
  • Coolant Capacity: 8 L
  • Hydraulic System Capacity: 100 L
These capacities enable the machine to operate for extended periods, minimizing the need for frequent refueling or oil changes.
Advantages of the ZX70-5G
  • Powerful Yet Compact: The ZX70-5G offers a perfect balance of power and size, making it ideal for both large and small projects. Its smaller size allows for better maneuverability in tight spaces, while its powerful engine ensures efficient performance.
  • Efficient Hydraulic System: With its advanced hydraulic components, the ZX70-5G provides precise control for lifting, digging, and leveling, ensuring high productivity and minimal downtime.
  • Fuel Efficiency: The machine’s engine and hydraulic systems are designed for fuel efficiency, reducing operational costs over time.
  • Durability: Hitachi is known for building durable and reliable machines. The ZX70-5G is no exception, designed to withstand the rigors of daily construction work.
Conclusion
The Hitachi ZX70-5G crawler excavator is a powerful, compact, and versatile machine, ideal for a wide range of construction applications. Its robust engine, advanced hydraulic system, and impressive working range make it a valuable asset for tasks such as trenching, digging, and material handling. Whether working in urban environments, confined spaces, or rough terrain, the ZX70-5G offers the performance and durability needed to get the job done efficiently.
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