Used Excavator Hitachi ZX75 Gallery, Images, Pictures

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Used Excavator Hitachi ZX75 Main Parts Pictures

The Hitachi ZX75 is a medium-sized, short-tail swing crawler excavator designed for high performance in urban environments, offering great maneuverability and versatility for a range of construction, excavation, and utility tasks. Below are the main parts of the Hitachi ZX75 excavator:

1. Engine

• Engine Type: The ZX75 is powered by a Isuzu 4JJ1 4-cylinder, turbocharged, water-cooled diesel engine.
• Rated Power: The engine produces around 55.4 kW (74 hp) at 2,200 rpm.
• Fuel Efficiency: The engine is optimized for fuel efficiency, reducing operational costs over long working hours while still offering ample power for heavy tasks.
• Turbocharged: The turbocharged engine provides a boost in power and efficiency, especially in demanding digging and lifting operations.
• Fuel Tank: The high-capacity fuel tank enables extended working hours before needing to refuel, ideal for continuous operation in larger projects.

2. Hydraulic System

• Main Hydraulic Pump: The ZX75 uses a variable displacement piston pump, providing a steady and smooth flow of hydraulic power to operate the boom, arm, and bucket with precision and force.
• Hydraulic Cylinders: The hydraulic cylinders control the movement of the boom, arm (stick), and bucket, ensuring smooth and powerful operation during digging, lifting, and material handling.
• Hydraulic Control Valve: The control valve directs hydraulic fluid to the appropriate components, offering responsiveness and efficiency in operation.
• Pilot-Controlled System: The machine uses a pilot-operated hydraulic system, making the excavator more intuitive and easier to operate, with less effort required from the operator.
• Hydraulic Oil Cooler: The hydraulic oil cooler helps to regulate the temperature of the hydraulic oil, preventing overheating and ensuring long-lasting hydraulic performance.

3. Undercarriage

• Track Frame: The track frame is built for durability and stability, providing support for the excavator on uneven terrain and in confined spaces.
• Tracks: The ZX75 is fitted with steel tracks, offering excellent traction and durability. These tracks help ensure smooth movement across construction sites, even in soft or muddy ground conditions.
• Track Rollers: Track rollers are responsible for distributing the weight of the machine evenly across the tracks, minimizing wear and improving stability during operation.
• Idlers: The idlers maintain proper track tension, ensuring that the tracks remain in place and perform efficiently during movement.
• Sprockets: Sprockets drive the tracks, ensuring smooth and reliable movement.
• Track Shoes: Track shoes provide extra traction and help to distribute the weight of the machine evenly across the tracks.

4. Upper Structure

• Cab: The operator's cab of the ZX75 is designed for comfort and visibility, with a spacious layout, ergonomically positioned controls, air conditioning, and a high-back seat to reduce fatigue during long shifts.
• Swing Bearing: The swing bearing allows the upper structure to rotate 360 degrees, providing excellent flexibility for operators to work around obstacles.
• Counterweight: The counterweight is located at the rear of the excavator to enhance stability during digging and lifting operations.
• Engine Hood: The engine hood provides protection to the engine and other vital components while allowing for easy access for maintenance and inspection.

5. Boom, Arm (Stick), and Bucket

• Boom: The boom is the primary lifting arm of the excavator, designed for digging, lifting, and material handling tasks.
• Arm (Stick): The arm (stick) extends the reach of the boom, allowing for deeper digging and more versatile operations.
• Bucket: The bucket is used for digging and handling materials. The ZX75 can be fitted with different types of buckets for various tasks, such as general-purpose, heavy-duty, or trenching buckets.
• Quick Coupler: The quick coupler system allows for easy attachment changes, improving the versatility and efficiency of the machine.

6. Attachment System

• The ZX75 can be equipped with a variety of attachments to increase its functionality, such as:
  • Buckets (for general digging, heavy-duty work, or trenching)
  • Hydraulic Hammers
  • Grapples
  • Augers
  • Rotating and Tilting Attachments
• The quick coupler system allows for quick and easy switching between attachments, reducing downtime and increasing productivity on the job site.

7. Cooling System

• Radiator: The radiator keeps the engine coolant at an optimal temperature, preventing the engine from overheating and ensuring smooth operation during extended periods.
• Oil Cooler: The oil cooler helps regulate the temperature of both the engine oil and hydraulic oil, which ensures the engine and hydraulic systems remain efficient and durable.
• Coolant Reservoir: The coolant reservoir stores extra coolant to maintain optimal levels, preventing overheating and improving engine longevity.

8. Electrical System

• Alternator: The alternator generates electricity to power the machine's electrical systems, including lights, sensors, and the monitoring system, as well as charging the battery.
• Battery: The battery provides starting power for the engine and supports the electrical systems when the engine is off.
• Fuse Box and Wiring Harness: The fuse box and wiring harness distribute electrical power to various components, ensuring safe and efficient operation of the excavator’s electrical systems.
• Machine Monitoring System: The monitoring system provides real-time diagnostics of the machine, including engine performance, fuel consumption, hydraulic pressures, and general machine health, allowing operators to spot any issues before they become serious.

9. Transmission and Drive System

• Hydrostatic Drive: The ZX75 features a hydrostatic drive system, which provides smooth and precise control of the machine’s movements. The system ensures quick response to operator inputs, whether in travel or in operation.
• Travel Motors: The travel motors transmit power from the engine to the tracks, allowing for efficient movement of the machine across the job site.
• Planetary Gear System: The planetary gear system helps regulate travel speed and torque, ensuring the machine is adaptable to different worksite conditions.
• Travel Speed Control: The travel speed can be adjusted based on the operational requirements, whether a slower, more controlled pace for digging or faster speeds for repositioning.

10. Swing System

• Swing Motor: The swing motor drives the upper structure’s rotation, providing the operator with 360-degree continuous rotation. This is especially useful for tasks like material handling and digging.
• Swing Reducer: The swing reducer ensures that the swing motor’s torque and speed are smoothly translated into controlled rotation of the upper structure.
• Swing Ring: The swing ring supports the rotation of the upper structure, enabling it to rotate continuously without interruption.

11. Fuel System

• Fuel Tank: The fuel tank has a large capacity, allowing for longer work periods without frequent refueling.
• Fuel Filters: Fuel filters prevent contaminants from entering the engine, ensuring smooth fuel delivery and optimal engine performance.
• Fuel Filler Neck: The fuel filler neck is designed for easy and secure refueling, minimizing spillage and improving convenience.

12. Steering and Travel System

• Pilot-Controlled Joystick: The pilot-controlled joystick offers precise control over all of the machine’s movements, including the boom, arm, bucket, swing, and travel, reducing the effort required from the operator.
• Hydraulic Steering: The hydraulic steering system ensures smooth and easy control over the excavator’s direction, making it easier to operate in tight or confined spaces.
• Travel Motors: The travel motors allow the machine to move across various terrains by driving the tracks.
• Travel Speed Control: The travel speed is adjustable to suit different site conditions, from slow, controlled movement for digging to faster movement when repositioning the machine.

13. Operator Comfort and Safety

• Ergonomic Cabin: The operator’s cabin is designed for maximum comfort, offering adjustable seating, air conditioning, and excellent visibility.
• Suspension Seat: The suspension seat reduces vibrations, providing greater comfort during extended periods of operation.
• ROPS/FOPS: The cab is equipped with ROPS (Rollover Protection Structure) and FOPS (Falling Object Protection Structure) for enhanced operator safety in the event of a rollover or falling debris.
• Wide Windows: Wide windows provide clear visibility, eliminating blind spots and making it easier for the operator to see the work area.