Used Excavator Hitachi ZX70 Gallery, Images, Pictures

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Used Excavator Hitachi ZX70 Main Parts Pictures

The Hitachi ZX70 is a medium-sized hydraulic excavator designed for high productivity and versatility. This machine is typically used in construction, excavation, landscaping, and other heavy-duty applications where both power and maneuverability are required. Below are the main parts of the Hitachi ZX70 Excavator:

1. Engine

• Engine Type: The ZX70 is powered by an Isuzu 4LE2 4-cylinder, water-cooled, turbocharged diesel engine.
• Rated Power: Approximately 50.4 kW (67 hp) at 2,200 rpm.
• Fuel Efficiency: The engine is designed for low fuel consumption, which is beneficial for longer operational hours without frequent refueling.
• Turbocharged: The engine is turbocharged, which enhances power output, especially in demanding applications such as lifting and digging.
• Fuel Tank: The ZX70 comes with a high-capacity fuel tank, allowing for long working hours on a single fill.

2. Hydraulic System

• Main Hydraulic Pump: The machine is equipped with a variable displacement piston pump, which provides a steady, high hydraulic flow, ensuring smooth operation of the boom, arm, and bucket.
• Hydraulic Cylinders: The hydraulic cylinders are responsible for controlling the movements of the boom, arm (stick), and bucket. They provide the force needed for lifting, digging, and dumping material.
• Hydraulic Control Valve: The hydraulic control valve directs hydraulic fluid to the correct components based on operator input, allowing for precise and efficient operation.
• Pilot System: The pilot-operated hydraulic system allows for smooth and light control over the excavator's various movements, reducing the effort needed by the operator.
• Hydraulic Oil Cooler: The hydraulic oil cooler keeps the hydraulic fluid at an optimal temperature to avoid overheating and ensure consistent performance.

3. Undercarriage

• Track Frame: The track frame provides the structural foundation for the machine's undercarriage and ensures stability when operating on uneven ground.
• Tracks: The ZX70 uses heavy-duty steel tracks for durability and superior traction, especially on rough or muddy terrains.
• Track Rollers: The track rollers are responsible for distributing the weight of the machine evenly across the tracks, which helps to extend the lifespan of the undercarriage components.
• Idlers: Idlers are components that maintain track tension and contribute to smooth movement, preventing track slack.
• Sprockets: The sprockets engage with the tracks to drive them, providing the power needed for the machine to move across different surfaces.
• Track Shoes: The track shoes are designed to provide additional traction, ensuring the machine does not slip when operating on difficult surfaces.

4. Upper Structure

• Cab: The operator’s cab is designed for comfort and safety, featuring ergonomic controls, air conditioning, and a clear view of the working area. This provides a more productive and less-fatiguing work environment.
• Swing Bearing: The swing bearing enables the upper structure of the machine to rotate 360 degrees, providing flexibility and allowing the operator to work more efficiently around obstacles.
• Counterweight: The counterweight provides balance to the machine, especially during lifting operations or when the boom is extended to its maximum reach.
• Engine Hood: The engine hood protects vital components such as the engine and hydraulic systems from debris and external damage, while providing easy access during maintenance.

5. Boom, Arm (Stick), and Bucket

• Boom: The boom is the primary lifting arm of the excavator, which is used for reaching and performing excavation tasks.
• Arm (Stick): The arm (stick) extends the reach of the boom, allowing for deeper digging or longer reaches.
• Bucket: The bucket is used for digging and handling materials. It can be changed to different types depending on the task, such as trenching, clamshell, or heavy-duty buckets.
• Quick Coupler: The quick coupler system allows for rapid and easy attachment changes, reducing downtime and enhancing machine versatility.

6. Attachment System

• The ZX70 is compatible with a range of attachments, including:
  • Buckets (general-purpose, heavy-duty, or specialized for trenching)
  • Hydraulic Hammers
  • Grapples
  • Augers
  • Rotating Attachments
• The quick coupler system allows the operator to quickly change between attachments, improving machine efficiency and versatility.

7. Cooling System

• Radiator: The radiator helps keep the engine coolant temperature within optimal operating ranges, preventing engine overheating.
• Oil Cooler: The oil cooler ensures that both the engine oil and hydraulic fluid stay at appropriate temperatures to maintain smooth machine operation.
• Coolant Reservoir: The coolant reservoir provides a backup supply of coolant, helping to maintain consistent engine temperatures during prolonged use.

8. Electrical System

• Alternator: The alternator is responsible for generating electrical power for the machine's systems, including the battery and electrical components like lights and sensors.
• Battery: The battery provides the starting power for the engine and stores electrical energy for when the machine is not running.
• Fuse Box and Wiring Harness: The fuse box protects the electrical circuits from damage due to overload, and the wiring harness distributes electrical power throughout the machine’s systems.
• Machine Monitoring System: The monitoring system provides real-time diagnostics, displaying critical information about engine performance, fuel consumption, hydraulic pressure, and overall machine health.