The Hitachi 120 (represented by the ZX120-6 model) has an operating weight of around 11,800 kg. Its overall length is 8,150 mm, width 2,490 mm, and height 2,740 mm. The track gauge measures 2,000 mm, with a track shoe width of 500 mm and a minimum ground clearance of 430 mm.
Powered by a 4-cylinder Isuzu engine, it delivers a rated power of 66 kW at 2,000 rpm. The maximum digging radius reaches 7,800 mm, and the maximum digging depth is 5,000 mm. It features a bucket digging force of 82 kN and a travel speed of 3.0/5.2 km/h, with a climbing capacity of 70%.
The fuel tank capacity is 210 L, the hydraulic oil tank holds 90 L, and the engine oil capacity is 16 L. The standard bucket capacity ranges from 0.4 to 0.6 m³, ideal for small to medium excavation tasks.
Engineering
The upper structure 采用 a reinforced box-type frame, enhancing stability during heavy operations. The boom and arm are constructed with high-strength steel, reducing weight while improving load-bearing capacity. Critical joints are equipped with wear-resistant bushings to minimize friction and extend service life.
The hydraulic system incorporates a load-sensing mechanism, which adjusts oil flow based on operational demands to reduce energy waste. Dual variable displacement pumps enable smooth simultaneous operations, such as boom lifting and bucket movement, without power loss.
The engine is integrated with a common-rail fuel injection system and a turbocharger, optimizing fuel combustion for improved efficiency and lower emissions. It also features an automatic idle function that reduces engine speed during inactivity, cutting down on fuel consumption.
Design
The cab is designed for operator comfort, with a fully adjustable suspension seat and intuitive control layout. A digital display provides real-time data on fuel levels, engine temperature, and maintenance alerts. The cab’s sound insulation minimizes noise, creating a more pleasant working environment.
- Safety & Maintenance Design
The cab meets ROPS/FOPS safety standards, with reinforced glass and a sturdy frame to protect operators. Maintenance points, including filters and grease fittings, are easily accessible, simplifying routine checks and repairs. A self-diagnostic system identifies faults and displays error codes for quick troubleshooting.
It offers three working modes (Standard, Eco, and Heavy) to adapt to different tasks, balancing power and fuel efficiency. The compact design allows for easy maneuvering in tight spaces, making it suitable for urban construction sites. The undercarriage is designed to resist debris buildup, ensuring reliable performance in muddy or dusty conditions.
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Value Category
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Items (Related to Used Hitachi 120 Excavator)
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Durability
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- Sturdy build to withstand long-term use in construction sites- Reinforced components for resistance against wear and tear- Proven track record of enduring tough working conditions
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Fuel Efficiency
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- Engine optimized for lower fuel consumption- Efficient power distribution to reduce unnecessary fuel usage- Cost-saving operation for extended work hours
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Reliability
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- Trusted performance in various construction tasks- Consistent functionality even as a pre-owned unit- Hitachi's reputation for manufacturing reliable heavy machinery
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Practicality for Construction
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- Suitable for small to medium-scale excavation projects- Maneuverable design for work in confined spaces- Compatible with standard attachments for versatile applications
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Cost-Effectiveness
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- Affordable pre-owned option compared to new models- Lower initial investment with maintained performance- Ideal for budget-conscious contractors and businesses
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