Used Hitachi ZX70Excavator

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📌 Overview

The Hitachi ZX70 (also marketed as Zaxis 70) is a 7-ton class mini excavator manufactured by Hitachi Construction Machinery. It is part of the popular Zaxis-7 series and is designed for versatile performance in confined spaces such as urban construction, landscaping, utility work, and small-scale earthmoving.

Specification	Details
Class	7-ton (Mini) Excavator
Manufacturer	Hitachi Construction Machinery (Japan)
Series	Zaxis-7 (ZX70-5G, ZX70US-5G, ZX70USLC-5G)
Emission Standard	Tier 4 Final / Stage V (varies by region)
Primary Market	Global — North America, Europe, Asia-Pacific

🔧 Engine

Specification	Details
Engine Model	Isuzu AA-4HK1XQB
Type	4-cylinder, turbocharged, intercooled diesel
Displacement	3.0 L
Rated Power	42.7 kW (57.3 hp) @ 2,200 rpm
Max Torque	~216 Nm @ 1,400 rpm
Fuel Tank Capacity	~120 L (31.7 gal)
Emission Compliance	EPA Tier 4 Final / EU Stage V

✅ The engine is known for fuel efficiency, reliability, and low noise/vibration levels.

⚙️ Hydraulic System

Specification	Details
System Type	Load-Sensing Hydraulic System
Pump Flow	~120 L/min (dual variable displacement)
Operating Pressure	35 MPa (5,076 psi)
Technology	Hitachi HICAS (Intelligent Construction & Automation System)
Auxiliary Flow	Available (for attachments like hammers, augers)

✅ The hydraulic system provides smooth, precise control and supports multiple attachment options via quick coupler.

📐 Dimensions & Weight

Specification	ZX70-5G (Standard)	ZX70US-5G (Ultra-Short)	ZX70USLC-5G (Ultra-Short Long Cab)
Operating Weight	~7,040 kg (15,520 lbs)	~7,040 kg	~7,200 kg
Transport Length	5,890 mm (19.3 ft)	4,930 mm (16.2 ft)	5,490 mm
Transport Width	2,460 mm (8.1 ft)	2,460 mm	2,460 mm
Transport Height	2,640 mm (8.7 ft)	2,640 mm	2,640 mm
Track Width	1,800 mm (5.9 ft)	1,800 mm	1,800 mm
Ground Clearance	390 mm (15.4 in)	390 mm	390 mm
Tail Swing	Compact / Zero Tail Swing	Zero Tail Swing	Zero Tail Swing

💪 Performance (Digging Specifications)

Specification	Details
Max Digging Depth	4,050 mm (13.3 ft)
Max Digging Reach	6,830 mm (22.4 ft)
Max Dumping Height	4,800 mm (15.7 ft)
Max Vertical Wall Dig	3,350 mm (11.0 ft)
Bucket Dig Force	~38 kN (8,543 lbf)
Arm Dig Force	~28 kN (6,295 lbf)
Bucket Capacity	0.20 – 0.30 m³ (0.26 – 0.39 yd³)
Blade Width	2,460 mm (8.1 ft)

🛡️ Cab & Operator Comfort

Feature	Details
Cab Type	ROPS/FOPS certified enclosed cab
Air Conditioning	✅ Standard
Heater	✅ Standard
Seat	Suspension seat with armrests
Controls	Pilot-operated joysticks + foot pedals
Display	Multi-function LCD monitor
Noise Level	~68 dB(A) (very quiet for its class)
Visibility	Excellent all-around visibility

🔄 Undercarriage Options

Option	Description
Steel Tracks	Standard — durable for general use
Rubber Tracks	Optional — for paved surfaces, indoor use, reduces ground damage
Track Width	Adjustable: 1,400 / 1,600 / 1,800 mm

🔩 Attachments & Versatility

The ZX70 features a quick coupler (auto-coupler) as standard, enabling fast attachment changes:

Attachment	Application
🪣 Standard Bucket (200–300mm)	General digging
🔨 Hydraulic Breaker/Hammer	Demolition, concrete breaking
🔩 Auger (Earth/Fence post)	Drilling, fencing
🪓 Hydraulic Thumb	Grappling, material handling
🪒 Tiltrotator	Precise positioning
🧹 Sweeper	Road cleaning
🔧 Rake	Landscaping, grading
🌲 Grapple	Log/brush handling

🆚 Key Competitors

Model	Weight	Power	Max Dig Depth
Hitachi ZX70	7,040 kg	57.3 hp	4,050 mm
CAT 307	7,495 kg	56 hp	4,110 mm
Komatsu PC78US-11	7,830 kg	57 hp	4,150 mm
Kubota U70-4	7,270 kg	53 hp	3,950 mm
Doosan DX75R-5	7,720 kg	56 hp	4,270 mm
JCB 8072	7,260 kg	54 hp	4,160 mm

✅ Key Advantages of ZX70

Advantage	Description
🏆 Fuel Efficiency	Among the best in its class (~8–10 L/hr)
🔇 Low Noise	One of the quietest 7-ton excavators
📏 Compact Design	Zero tail swing options for tight spaces
🧠 Smart Technology	HICAS system for intelligent operation
🛠️ Easy Maintenance	Ground-level service points, long service intervals
💰 Low Cost of Ownership	Excellent resale value, reliable Isuzu engine
🏗️ Versatile	Quick coupler + wide attachment range

📝 Summary

The Hitachi ZX70 is a top-tier 7-ton mini excavator that excels in fuel economy, operator comfort, compactness, and versatility. It's an ideal choice for:

🏙️ Urban & residential construction
🌳 Landscaping & gardening
🔌 Utility & pipeline work
🏚️ Small demolition projects
🚜 Farm & rural applications

It continues to be one of Hitachi's best-selling models worldwide and is a strong competitor against the Cat 307, Komatsu PC78, and Kubota U70.

📌 Note: Specifications may vary slightly by region and model variant (ZX70-5G / ZX70US-5G / ZX70USLC-5G). Always refer to the official Hitachi datasheet for your specific market.