Used Excavator Hitachi ZX120 Gallery, Images, Pictures

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Used Excavator Hitachi ZX120 Main Parts Pictures

The Hitachi ZX120 is a medium-sized crawler excavator designed for a range of tasks, including heavy-duty excavation, construction, and material handling. It combines power, fuel efficiency, and versatility in both urban and rural work environments. Below are the main parts of the Hitachi ZX120 excavator:

1. Engine

• Engine Type: The ZX120 is powered by a Isuzu 4JJ1 4-cylinder, turbocharged, water-cooled diesel engine.
• Rated Power: The engine delivers approximately 75 kW (100 hp) at 2,000 rpm.
• Turbocharged: The turbocharged engine provides excellent power output for digging, lifting, and material handling tasks, especially in demanding conditions.
• Fuel Efficiency: The engine is designed to optimize fuel consumption, offering a balance of power and economy for extended work hours.
• Fuel Tank: The high-capacity fuel tank allows the ZX120 to run for long periods before requiring refueling, improving operational uptime.

2. Hydraulic System

• Main Hydraulic Pump: The ZX120 uses a variable displacement piston pump that ensures high hydraulic flow, enabling powerful and efficient operation of the boom, arm, and bucket.
• Hydraulic Cylinders: The hydraulic cylinders are responsible for controlling the movement of the boom, arm (stick), and bucket, allowing the operator to perform a wide range of tasks with precision.
• Hydraulic Control Valve: The control valve directs hydraulic fluid to the necessary components, providing smooth and responsive operation.
• Pilot-Controlled System: The machine is equipped with a pilot-operated hydraulic system, which enhances the precision and ease of controlling the excavator.
• Hydraulic Oil Cooler: The hydraulic oil cooler regulates the temperature of the hydraulic fluid, ensuring that the system remains efficient and avoids overheating during heavy use.

3. Undercarriage

• Track Frame: The track frame is robust and designed to handle the weight and force of the machine while ensuring stability, especially on uneven terrain.
• Tracks: The ZX120 uses steel tracks, which are ideal for providing excellent traction in a variety of working conditions, including mud, sand, and rough terrain.
• Track Rollers: Track rollers distribute the weight of the machine evenly across the tracks, reducing wear and maintaining smooth movement.
• Idlers: Idlers keep the tracks under proper tension, preventing the tracks from loosening and ensuring smooth travel.
• Sprockets: Sprockets drive the tracks, ensuring that the machine moves efficiently and reliably over various surfaces.
• Track Shoes: The track shoes help increase the stability and traction of the machine, especially when operating in soft or slippery ground conditions.

4. Upper Structure

• Cab: The ZX120 features a spacious operator's cab designed for comfort, visibility, and productivity. It includes ergonomically positioned controls, a comfortable seat, and air conditioning for enhanced operator comfort.
• Swing Bearing: The swing bearing enables the upper structure to rotate 360 degrees, offering excellent flexibility and maneuverability, especially in tight work environments.
• Counterweight: The counterweight located at the rear of the machine helps balance the machine during digging and lifting operations, preventing tipping.
• Engine Hood: The engine hood protects the engine and other components while allowing for easy access during maintenance and inspection.

5. Boom, Arm (Stick), and Bucket

• Boom: The boom is the main lifting arm of the excavator. It is designed for powerful digging, lifting, and material handling tasks.
• Arm (Stick): The arm (stick) extends the boom, allowing deeper digging and more versatile material handling.
• Bucket: The bucket is used for excavation and material handling. The ZX120 can be fitted with different types of buckets, including general-purpose, heavy-duty, or trenching buckets, depending on the task.
• Quick Coupler: The quick coupler system enables fast and easy attachment changes, improving efficiency and reducing downtime.

6. Attachment System

• The ZX120 is compatible with various attachments, including:
  • Buckets (general-purpose, heavy-duty, or trenching buckets)
  • Hydraulic Hammers
  • Grapples
  • Augers
  • Rotating and Tilting Attachments
• The quick coupler allows for fast switching between attachments, maximizing machine versatility and increasing productivity.

7. Cooling System

• Radiator: The radiator maintains the optimal operating temperature of the engine coolant, preventing overheating during extended operations.
• Oil Cooler: The oil cooler ensures that both the engine and hydraulic oil remain at their ideal temperatures, optimizing performance and preventing damage.
• Coolant Reservoir: The coolant reservoir stores excess coolant, ensuring the system remains filled and operating efficiently.

8. Electrical System

• Alternator: The alternator generates electrical power for the machine's electrical systems, including the lights, sensors, and monitoring system, as well as charging the battery.
• Battery: The battery is used to start the engine and power the electrical systems when the engine is not running.
• Fuse Box and Wiring Harness: The fuse box and wiring harness distribute electrical power throughout the machine, ensuring the safe and efficient operation of all electrical components.
• Machine Monitoring System: The monitoring system provides real-time diagnostics and alerts, displaying important performance metrics such as engine temperature, fuel consumption, hydraulic pressures, and overall machine health.

9. Transmission and Drive System

• Hydrostatic Drive: The ZX120 utilizes a hydrostatic drive system, providing smooth and precise control over the machine's movements.
• Travel Motors: The travel motors transmit power from the engine to the tracks, enabling efficient movement across various surfaces.
• Planetary Gear System: The planetary gear system ensures efficient transmission of power from the engine to the tracks, offering variable travel speeds for different job site needs.
• Travel Speed Control: The travel speed can be adjusted, providing more control during delicate tasks or faster movement for repositioning the machine.

10. Swing System

• Swing Motor: The swing motor powers the rotation of the upper structure, providing continuous 360-degree rotation, which is useful for material handling, digging, and maneuvering.
• Swing Reducer: The swing reducer helps manage the torque and speed from the swing motor, ensuring smooth and controlled rotation.
• Swing Ring: The swing ring supports the rotation of the upper structure, ensuring stable and continuous movement.

11. Fuel System

• Fuel Tank: The fuel tank has a large capacity, allowing the ZX120 to work for extended periods without frequent refueling.
• Fuel Filters: The fuel filters keep contaminants out of the engine, ensuring the fuel system operates cleanly and efficiently.
• Fuel Filler Neck: The fuel filler neck is designed for easy and secure refueling, reducing spillage and improving convenience.

12. Steering and Travel System

• Pilot-Controlled Joystick: The pilot-controlled joystick allows the operator to precisely control the excavator’s movements, including the boom, arm, bucket, swing, and travel functions.
• Hydraulic Steering: The hydraulic steering system allows for smooth and easy directional control of the machine, making it especially maneuverable in tight spaces.
• Travel Motors: The travel motors allow the machine to move efficiently over various terrains, providing consistent power to the tracks.
• Travel Speed Control: The travel speed can be adjusted to suit different tasks, whether it's slow, precise work or faster movement across the site.