Used Hitachi ZX350-3G Excavator

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Hitachi ZX350-3G Crawler Excavator Detailed Introduction

The Hitachi ZX350-3G is a 35-ton class heavy-duty crawler excavator developed and manufactured by Hitachi Construction Machinery, a global leading construction equipment supplier. As a core model of the Zaxis-3G product line, it is specially designed for harsh working conditions and regions with high requirements for fuel adaptability, balancing strong power, ultra-high durability, low operation cost and excellent operability, making it one of the most popular models in its tonnage class for infrastructure, mining and heavy engineering projects.

Core Technical Specifications

Item	Specific Parameter
Operating Weight	33,700 – 35,500 kg (varies by configuration)
Engine Model	Isuzu AI-4HK1X 4-cylinder direct-injection diesel engine
Rated Net Power	184 kW (247 HP) @ 2,000 rpm
Displacement	5.193 L
Emission Standard	Tier 2 / EU Stage II
Standard Bucket Capacity	1.4 – 1.6 m³ (earthwork bucket; rock bucket optional)
Maximum Digging Depth (standard boom/stick)	7,380 mm
Maximum Horizontal Digging Reach	10,980 mm
Maximum Dumping Height	7,040 mm
Swing Speed	11.5 rpm
Travel Speed	3.2 km/h (low gear) / 5.5 km/h (high gear)
Max Gradeability	35° (70%)
Ground Pressure	65 kPa (standard track shoe)

Key Features

1. Highly Reliable Power System

The ZX350-3G is equipped with a field-proven Isuzu direct-injection diesel engine, optimized for complex construction scenarios:

Outstanding low-speed high-torque output, ensuring stable strong digging force even under full heavy load conditions
Excellent fuel adaptability: compared with common rail electronic injection models, it has lower requirements for fuel quality, greatly reducing the failure rate of fuel system components in regions with unstable fuel quality, which is extremely suitable for remote construction sites and mining areas
Equipped with two-stage heavy-duty air filter and multi-level fuel filtration system, effectively preventing dust and impurities from entering the engine, extending engine service life
Optimized combustion design reduces fuel consumption by 6-10% compared with previous generation models under the same working conditions.

2. High-Efficiency Hydraulic System

It adopts Hitachi's proprietary HIOS (Hitachi Innovative Operation System) IIIB hydraulic control system, with industry-leading operation precision and efficiency:

Negative flow control technology minimizes hydraulic pressure loss, improving system efficiency and reducing unnecessary energy consumption
Smooth compound action: boom, stick, swing and travel actions can be coordinated accurately, greatly improving operation efficiency in earthwork loading, trenching and lifting scenarios
Multiple working modes are available: Power mode for heavy load digging and breaking, ECO mode for light load operations to further reduce fuel consumption, and lifting mode for heavy object hoisting
Equipped with stick regeneration circuit and boom priority / swing priority switching function, which can be adjusted according to actual working conditions to improve operation speed.

3. Ultra-High Structural Durability

The whole machine is reinforced for heavy load and impact conditions, with an average service life 20% longer than ordinary medium excavators:

The boom and stick are made of high-strength low-alloy steel, with reinforced rib plates added at high stress positions, and wear-resistant lining plates installed at the hinge points, which can withstand long-term impact load of rock digging and breaking operations
X-type integral lower frame has strong torsion resistance, which can adapt to uneven and rugged construction sites
Heavy-duty sealed and lubricated track system, optional triple-groove wear-resistant track shoes for mining conditions, and the service life of supporting wheels, carrier rollers and idlers is extended by more than 30%
The cab meets ROPS (Roll Over Protective Structure) and FOPS (Falling Object Protective Structure) international safety certification, providing maximum safety guarantee for operators.

4. Comfortable and Safe Operating Experience

The sealed and pressurized cab creates a low-fatigue operating environment for long-time work:

The internal noise level is controlled below 75 dB(A), 5-8 dB lower than similar models, effectively reducing operator fatigue
Multi-adjustable air suspension seat, with adjustable armrests and lumbar support, fitting different body types of operators
Large-area frameless glass design provides 360° wide vision, reducing operation blind spots
Full-color LCD monitoring panel displays all operating parameters in real time, with active fault alarm and maintenance reminder functions
Automatic constant temperature air conditioning, humanized storage space, cup holder and radio configuration further improve operating comfort.

5. Low-Cost Maintenance

The design takes full account of the convenience of daily maintenance, reducing maintenance time and cost:

All daily maintenance points are arranged at ground-accessible positions, no need to climb to the upper car for replacement of oil filters, fuel filters and air filters
Long maintenance interval: engine oil replacement every 500 working hours, hydraulic oil replacement every 5,000 working hours, air filter outer element replacement every 2,000 working hours
Central lubrication system is optional, realizing automatic lubrication of all hinge points, avoiding manual lubrication omission.

Main Application Scenarios

Large-scale earthwork excavation, loading and transportation projects
Open-pit mining, ore loading and stripping operations
Foundation construction, water conservancy projects and highway/railway construction
Urban demolition and rock breaking operations (matched with hydraulic breaker)
Port and freight yard bulk cargo handling operations.

Optional Configurations

Users can choose personalized configurations according to actual working needs:

Different types of buckets: rock bucket, grid bucket, heavy-duty digging bucket
Hydraulic breaker pipeline, quick coupler, ripper
Extended boom and stick for deep trenching or high dumping operations
Mining-grade heavy-duty track shoes, cab protective net
Central automatic lubrication system, reversing camera, on-board fire extinguishing system.

Non flooded

No accident

Original product

Used Hitachi ZX350-3G Excavator

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