Used Hitachi ZX120 Excavator

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Hitachi ZX120 Crawler Excavator Detailed Introduction

The Hitachi ZX120 is a 12-ton class mid-sized crawler excavator developed and manufactured by Hitachi Construction Machinery, a global leading heavy equipment manufacturer. As a classic model in Hitachi's ZAXIS series, it balances high operational efficiency, low fuel consumption, outstanding durability and operator comfort, making it one of the most popular products in the 10-14 ton excavator segment worldwide.

1. Core Specifications

Parameter	Details
Operating Weight	11,800 – 12,500 kg (varies by configuration)
Bucket Capacity	0.32 – 0.52 m³
Rated Power	66 kW (88.5 hp) at 2,000 rpm
Max Digging Depth	5,570 mm
Max Digging Reach	8,370 mm
Max Digging Height	8,610 mm
Travel Speed	3.4 / 5.5 km/h (2 gears)
Swing Speed	11.5 rpm
Arm Digging Force	63.7 kN
Bucket Digging Force	92.2 kN

Note: Specifications vary slightly for regional versions (Europe, North America, China, Southeast Asia etc.) to match local emission standards and market demands.

2. Powertrain System

The ZX120 is equipped with a highly reliable Isuzu AI-4JJ1X 4-cylinder, water-cooled, turbocharged intercooled diesel engine:

Meets different regional emission requirements (Tier 3/Stage IIIA for earlier versions, Tier 4 Final/Stage V for the latest upgraded variants)
Adopts electronic high-pressure common rail fuel injection technology, delivering 8-10% lower fuel consumption than same-class previous generation models while maintaining stable power output
Excellent low-speed torque performance ensures strong digging force even under heavy load conditions, with strong adaptability to high-altitude, high-temperature and dusty working environments
Standard auto idle and auto shutdown functions further reduce unnecessary fuel waste and extend engine service life

3. Hydraulic System

It adopts Hitachi's proprietary HIOS (Hitachi Intelligent Hydraulic System), the core technology of Hitachi excavators:

Realizes precise matching of pump power and engine output, greatly reduces hydraulic loss and improves operation responsiveness
Supports independent control of boom, arm and swing movements, enabling smooth compound operations (e.g. simultaneous digging and swinging) without obvious jitter, improving work efficiency by more than 10% compared to competing models
Original Hitachi hydraulic components have high sealing performance and low failure rate; the hydraulic oil replacement cycle reaches 5,000 hours under normal working conditions

4. Structure & Durability

The ZX120 is designed for long-term heavy-load operation:

Main structural parts (boom, arm, undercarriage) are made of high-strength tensile steel with reinforced welding treatment, able to withstand long-term impact from harsh working conditions
X-shaped box-type undercarriage structure has excellent torsion resistance; wear-resistant alloy steel track shoes are standard, with optional reinforced tracks for quarry and other harsh scenarios
Pin shafts of the working device are treated with anti-wear coating, extending the service life of wearing parts by more than 30% compared with similar models
Parallel structure radiator delivers outstanding heat dissipation performance, avoiding overheating even after 24 hours of continuous operation in high-temperature environments

5. Operator Comfort

The cab is designed to reduce operation fatigue and improve safety:

ROPS/FOPS certified cab provides reliable anti-rollover and falling-object protection for operators
Fully adjustable air suspension seat effectively absorbs operation vibration; ergonomically designed control lever has short stroke and light operating force, reducing fatigue during long hours of work
Large-area glass design provides 360° wide field of view, ensuring operation safety in narrow construction sites
Standard high-performance air conditioning system with uniform cooling and heating; excellent cab sealing isolates external noise and dust, the interior noise level is kept below 75dB during operation
Multi-function LCD monitor displays real-time working parameters, fault codes and maintenance reminders for easy operation

6. Maintenance Convenience

Hitachi has optimized the maintenance layout to reduce later use costs:

All daily inspection points are arranged at ground-accessible positions, no need to climb the machine for daily checks
Engine oil filter, fuel filter and air filter are concentrated on the right side of the fuselage for quick replacement
Standard Hitachi Global e-Service remote monitoring system supports remote checking of equipment working status, fuel consumption and maintenance schedule, helping users manage fleets efficiently and reduce unexpected downtime
Long replacement cycle of wearing parts reduces overall maintenance cost by 15% compared to competing products

7. Typical Applications

The ZX120 is suitable for a wide range of working scenarios:

Municipal engineering: road repair, pipeline laying, urban greening construction
Small and medium-sized earthwork: civil building foundation excavation, site leveling, earthwork transfer
Agricultural construction: farmland remediation, water conservancy ditch excavation, orchard land finishing
Small demolition work: low-rise building demolition, waste removal (with optional crushing hammer)
Material handling: bulk cargo (sand, gravel, coal) loading, timber handling (with optional grab attachment)

8. Optional Configurations

Users can choose customized configurations according to actual needs:

Different types of buckets (standard bucket, rock bucket, narrow ditch bucket)
Working attachments: hydraulic crushing hammer, hydraulic grab, ripper, auger drill
Reinforced undercarriage, heavy-duty track shoes
Backup camera, 360° panoramic monitoring system
Cold zone package (engine preheater, cold-resistant battery) for low-temperature environments below -30℃
High-altitude operation package for areas above 3,000m above sea level

As a classic Hitachi model, the ZX120 has won wide recognition from global users for its low failure rate, low fuel consumption, flexible operation and high residual value, and is ideal for small and medium-sized construction projects that have high requirements for operation efficiency and use cost.

Non flooded

No accident

Original product

Used Hitachi ZX120 Excavator

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