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Hitachi EX120-3 Excavator: A Comprehensive Overview
The Hitachi EX120-3 excavator is a robust piece of machinery that has carved a niche for itself in the construction and excavation industry. Known for its reliability and performance, this excavator is designed to handle a variety of tasks, from digging and grading to lifting and loading. With a strong reputation built over years of service, the EX120-3 stands out as a favorite among operators and contractors alike.
Performance and Versatility
One of the most striking features of the Hitachi EX120-3 is its versatility. This excavator is equipped to tackle a wide range of applications, making it suitable for both urban and rural projects. Whether you’re working on a small residential site or a larger commercial project, the EX120-3 can adapt to your needs. Its compact size allows it to maneuver in tight spaces, while its powerful hydraulic system ensures that it can handle demanding tasks with ease.
The EX120-3 is powered by a reliable engine that delivers impressive performance. Operators will appreciate the smooth operation and quick response times, which are crucial when working under tight deadlines. The machine’s digging depth and reach are also commendable, allowing for efficient excavation without the need for constant repositioning.
Operator Comfort and Control
Hitachi understands that operator comfort is paramount for productivity. The EX120-3 features a spacious cab that provides excellent visibility and a comfortable working environment. The ergonomic controls are intuitive, allowing operators to focus on the task at hand without unnecessary distractions. This attention to operator comfort translates to longer working hours without fatigue, ultimately enhancing job performance.
Safety is another critical aspect of the EX120-3 design. While this overview won’t delve deeply into safety features, it’s worth noting that the excavator is built with operator safety in mind. The cab is designed to protect against falling objects, and the controls are positioned for easy access, minimizing the risk of accidents.
Durability and Maintenance
Durability is a hallmark of the Hitachi brand, and the EX120-3 is no exception. Constructed with high-quality materials, this excavator is built to withstand the rigors of daily use. Regular maintenance is straightforward, with accessible components that make servicing easier for operators and technicians alike. This ease of maintenance not only prolongs the life of the machine but also reduces downtime, keeping projects on schedule.
In summary, the Hitachi EX120-3 excavator is a well-rounded machine that offers a blend of performance, comfort, and durability. Its versatility makes it a valuable asset on any job site, and its reputation for reliability ensures that it will continue to be a preferred choice for contractors and operators for years to come.
Hitachi EX120-3 Excavator Specifications
The Hitachi EX120-3 excavator is a well-engineered machine that combines power, efficiency, and user-friendly features. Below, we delve into the detailed specifications that make this excavator a reliable choice for various construction and excavation tasks.
Engine Specifications
The heart of any excavator is its engine, and the EX120-3 does not disappoint. Here’s a breakdown of its engine specifications:
| Specification | Details |
|---|---|
| Engine Model | Isuzu 4BG1 |
| Type | 4-Cylinder, Water-Cooled, Diesel |
| Power Output | 85 HP (63 kW) @ 2,200 RPM |
| Torque | 320 Nm @ 1,500 RPM |
| Fuel Tank Capacity | 100 liters |
Dimensions
The dimensions of the Hitachi EX120-3 are crucial for understanding its capabilities and limitations on the job site. Here’s a detailed look:
| Specification | Details |
|---|---|
| Overall Length | 5,350 mm |
| Overall Width | 2,200 mm |
| Overall Height | 2,550 mm |
| Track Width | 600 mm |
| Track Length | 2,300 mm |
| Ground Clearance | 400 mm |
Weight and Capacity
Understanding the weight and capacity of the EX120-3 is essential for assessing its operational limits. Here are the key figures:
| Specification | Details |
|---|---|
| Operating Weight | 12,000 kg |
| Max Digging Depth | 5,300 mm |
| Max Reach | 8,300 mm |
| Bucket Capacity | 0.5 m³ |
| Max Lifting Capacity | 3,500 kg |
Working Features
The working features of the Hitachi EX120-3 are designed to enhance productivity and efficiency. Here’s what you need to know:
| Specification | Details |
|---|---|
| Hydraulic System Type | Closed Center Load Sensing |
| Max Hydraulic Flow | 150 liters/min |
| Operating Pressure | 34.3 MPa |
| Swing Speed | 11.5 RPM |
| Arm Length | 2,600 mm |
The Hitachi EX120-3 excavator is engineered to deliver exceptional performance across various applications, making it a solid investment for contractors and operators looking for reliability and efficiency on the job site.
Common Problems and Recommendations for the Hitachi EX120-3 Excavator
While the Hitachi EX120-3 excavator is a reliable and efficient machine, like any piece of heavy equipment, it is not without its issues. Understanding these common problems and knowing how to address them can help operators maintain optimal performance and extend the life of the machine.
Common Problems
The following are some of the most frequently encountered issues with the Hitachi EX120-3:
1. Hydraulic System Leaks
Hydraulic fluid leaks can occur due to worn seals or damaged hoses. This not only affects performance but can also pose safety hazards.
2. Engine Overheating
Overheating can result from a clogged radiator or low coolant levels. This can lead to engine damage if not addressed promptly.
3. Electrical Issues
Electrical problems, such as faulty wiring or blown fuses, can disrupt the operation of the excavator. These issues may cause the machine to fail to start or operate erratically.
4. Track Wear and Tear
The tracks on the EX120-3 can wear down over time, leading to reduced traction and stability. This can be exacerbated by operating on uneven terrain.
5. Bucket and Attachment Damage
Frequent use can lead to wear on the bucket and other attachments. Cracks and dents can affect their efficiency and require replacement.
Recommendations for Maintenance and Troubleshooting
To mitigate these issues and ensure the Hitachi EX120-3 operates smoothly, consider the following recommendations:
1. Regular Inspections
Perform routine inspections to identify potential problems early. Focus on:
– Hydraulic hoses and connections
– Engine coolant levels and radiator condition
– Electrical wiring and connections
– Track condition and tension
2. Maintain Fluid Levels
Ensure that hydraulic fluid and engine oil levels are checked and maintained regularly. This helps prevent overheating and ensures smooth operation.
3. Clean the Radiator
Keep the radiator clean and free from debris. Regularly check for clogs and clean as necessary to prevent engine overheating.
4. Monitor Electrical Systems
Check electrical connections and wiring for signs of wear or damage. Replace any faulty components promptly to avoid operational disruptions.
5. Track Maintenance
Inspect tracks for wear and adjust tension as needed. Replace tracks when they show significant signs of wear to maintain traction and stability.
6. Proper Use of Attachments
Use the correct attachments for specific tasks and avoid overloading them. This will help prevent damage and extend their lifespan.
7. Follow Manufacturer Guidelines
Adhere to the maintenance schedule and guidelines provided by Hitachi. This includes regular servicing and using genuine parts for replacements.
By addressing these common problems and following the recommended maintenance practices, operators can enhance the performance and longevity of the Hitachi EX120-3 excavator, ensuring it remains a valuable asset on any job site.