Used Hitachi ZX120 Excavator

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Detailed Introduction to HITACHI ZX120 Crawler Excavator

The HITACHI ZX120 is a class-leading 12-ton medium-sized crawler excavator developed and manufactured by Hitachi Construction Machinery, a global top-tier construction equipment supplier. As a core model of Hitachi's widely acclaimed ZX series, it balances high working efficiency, excellent fuel economy, outstanding durability and operator comfort, making it one of the best-selling models in the 10-14 ton excavator segment worldwide. It is available in multiple updated versions including the classic ZX120-6, emission-compliant ZX120-5A and the latest ZX120-7, to meet different regional regulatory and operational demands.

Core Specifications (Standard Configuration)

Parameter	Specific Value
Operating weight	11,800 kg – 12,600 kg (varies by configuration)
Standard bucket capacity	0.52 m³, optional range from 0.3 m³ (narrow bucket) to 0.65 m³ (bulk bucket)
Maximum digging height	8,610 mm
Maximum digging depth	5,540 mm
Maximum digging radius	8,280 mm
Standard track ground pressure	42 kPa; optional wide track: 33 kPa
Travel speed (high/low)	5.5 km/h / 3.3 km/h
Swing speed	11.5 rpm
Maximum bucket digging force	99 kN
Maximum arm digging force	63 kN

Power System

The ZX120 is equipped with a specially tuned Isuzu diesel engine, which is famous for high reliability and low fuel consumption:

Classic versions are fitted with Isuzu CC-4BG1TC four-stroke, water-cooled, turbocharged engine, with rated power of 66 kW (88.5 hp) at 2,200 rpm, and peak torque of 275 N·m at 1,600 rpm, delivering strong power for heavy-load operations such as rock digging and breaker work. Newer emission-compliant versions use Isuzu 4JJ1X engine to meet higher environmental standards.
Equipped with Hitachi's exclusive ECO mode, which optimizes engine power output and hydraulic matching to reduce fuel consumption by 8-12% under light and medium load conditions. Its comprehensive fuel consumption is only 5-7 L per hour under conventional working conditions, 10% lower than similar products of other brands.
Emission compliance: Meets EU Stage IIIA / US Tier 3 (old versions) and EU Stage V / US Tier 4 Final / China National IV (new versions) requirements, with low exhaust emissions and no black smoke even under sudden load conditions.

Hydraulic System

It adopts Hitachi's third-generation HIOS (Hydraulic Innovation & Optimization System) high-efficiency hydraulic system, leading the industry in operation precision and response speed:

Dual variable piston pump configuration, with maximum total flow of 240 L/min, system working pressure up to 34.3 MPa, ensuring strong digging performance.
Independent pilot control system with pressure compensation valves, enabling smooth compound operations (such as simultaneous digging, swinging and traveling) without jamming, and consistent action speed even under different load conditions.
Built-in boom and arm regeneration circuits, effectively reducing hydraulic pressure loss, shortening single operation cycle time and improving overall work efficiency by more than 10%.

Structural Durability

The ZX120 is designed for harsh construction environments, with a service life of more than 15,000 working hours under standard maintenance:

X-type box-shaped undercarriage made of high-strength low-alloy steel, with excellent impact resistance and torsional resistance, suitable for uneven rough construction sites.
High-manganese steel track shoes, pins and bushings with quenching treatment, with 30% higher wear resistance than ordinary materials; optional widened track shoes are suitable for soft ground, paddy fields and muddy working conditions.
Working device (boom, arm and bucket) is made of thickened wear-resistant steel plate, with stress relief treatment at all welding positions to avoid cracking under long-term heavy load; optional rock buckets, grabbers, breakers, augers and other attachments are supported to meet diversified operation needs.
Planetary gear swing mechanism adopts fully sealed design, which is dust-proof and waterproof, with extremely low failure rate even in dusty or rainy working environments.

Operator Comfort

The cab meets international ROPS (Roll Over Protective Structure) and FOPS (Falling Object Protective Structure) safety certification, providing a safe and comfortable working environment:

Fully sealed cab with professional sound insulation design, indoor operating noise as low as 72 dB(A), far lower than the industry average.
Adjustable air suspension seat with lumbar support, matched with low-force pilot control joysticks, effectively reducing operator fatigue during long-hour operation.
Standard high-efficiency heating and cooling air conditioning system, wide front and side windows with 360° ultra-wide field of view, and sunroof for ventilation, greatly improving operating experience.
Integrated LCD instrument panel displays real-time parameters such as fuel level, hydraulic oil temperature, working hours and fault codes, facilitating operators to grasp equipment status in time.

Maintenance Convenience

Hitachi has optimized the maintenance design to greatly reduce daily maintenance time and cost:

All daily maintenance points (engine oil filter, fuel filter, air filter, hydraulic oil filter, etc.) are arranged at ground-accessible positions, which can be replaced by opening the side cover without climbing the equipment.
Centralized lubrication system for working device pins, avoiding separate lubrication of each pin and cutting regular maintenance time by 60%.
Long replacement cycle of wearing parts: engine oil replacement interval is 500 working hours, hydraulic oil replacement interval is 4,000 working hours, and hydraulic oil filter replacement interval is 2,000 working hours.
Newer versions are equipped with Hitachi Global e-Service remote monitoring system, which supports real-time viewing of equipment location, working status and fault warning, facilitating fleet management and after-sales service.

Typical Application Scenarios

Thanks to its moderate size, flexible maneuverability and strong adaptability, the ZX120 is widely used in various working scenarios:

Municipal engineering: Road maintenance, pipeline laying, landscaping, small building demolition
Civil construction: Foundation excavation, material handling, site leveling for housing and commercial projects
Agricultural and water conservancy projects: Farmland renovation, canal digging, reservoir maintenance
Small mining and quarrying: Ore handling, stripping work in small mines and quarries
Special operations: Can be fitted with different attachments to complete breaking, wood grabbing, drilling and other specialized work

Market Performance

The Hitachi ZX120 has been widely praised by global users for its low failure rate, low operating cost and high residual value. It is the first choice for small and medium-sized construction contractors, and its second-hand residual value is 10-15% higher than similar products of other brands in the global construction equipment market.

Non flooded

No accident

Original product

Used Hitachi ZX120 Excavator

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