Used Hitachi ZX350 Excavator

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The Hitachi ZX350 (Zaxis 350) is a 35-ton class hydraulic excavator designed for heavy-duty construction, mining, quarrying, and demolition applications. It belongs to Hitachi Construction Machinery's renowned Zaxis series, known for reliability, fuel efficiency, and operator comfort.

📋 Overview of Models

Model	Generation	Engine	Approx. Year
ZX350LC-5	5th Gen	Isuzu AH-6HK1X	~2012–2017
ZX350LC-5A	5th Gen (Updated)	Isuzu AH-6HK1X	~2015–2020
ZX350LC-6 / 6A	6th Gen (Latest)	Isuzu AH-6HK1XQB	~2020–Present

🔧 Engine Specifications

Parameter	Details
Engine Model	Isuzu AH-6HK1X (LC-5/5A) / AH-6HK1XQB (LC-6)
Type	6-cylinder, Turbocharged & Intercooled Diesel
Displacement	7.79 Liters
Rated Power	~247 HP (184 kW) @ 2,000 rpm
Max Torque	~891 N·m (657 lb-ft) @ 1,500 rpm
Emission Standard	Tier 4 Final / Stage V (depending on region)
Fuel Tank Capacity	~570 Liters (150.6 US gal)

✅ The engine features common rail fuel injection, EGR + DPF aftertreatment for clean emissions.

& Dimensions & Weight

Parameter	ZX350LC-5/5A	ZX350LC-6
Operating Weight	~34,500–35,000 kg (76,060–77,160 lbs)	~35,000 kg (77,160 lbs)
Transport Length	~10,400–10,760 mm (34.1–35.3 ft)	~10,760 mm (35.3 ft)
Transport Width	~2,990 mm (9.8 ft)	~2,990 mm (9.8 ft)
Transport Height	~3,200 mm (10.5 ft)	~3,190 mm (10.5 ft)
Ground Clearance	~460 mm (18.1 in)	~460 mm (18.1 in)
Track Width	600 mm (23.6 in) shoes	600 mm (23.6 in) shoes

🔨 Working Performance

Parameter	Specification
Bucket Capacity (Std.)	1.4 – 1.6 m³ (1.8 – 2.1 cu yd)
Max. Bucket Capacity	Up to 1.8 m³ (2.4 cu yd)
Max. Digging Depth	~7,250 – 7,400 mm (23.8 – 24.3 ft)
Max. Digging Reach	~10,200 – 10,500 mm (33.5 – 34.4 ft)
Max. Dumping Height	~7,300 – 7,500 mm (24.0 – 24.6 ft)
Boom Breakout Force	~120 – 130 kN (27,000 – 29,200 lbf)
Arm Breakout Force	~95 – 105 kN (21,400 – 23,600 lbf)
Swing Speed	~8.0 rpm
Travel Speed	~5.0 km/h (3.1 mph)
Gradeability	~70% (35°)

🛢️ Hydraulic System

Parameter	Details
Pump Type	Variable Displacement Axial Piston Pump (×2)
Total Flow	~2 × 280 – 320 L/min (74 – 84.5 US gpm)
System Pressure	~35 MPa (5,076 psi)
Swing Motor	Axial piston motor with brake
Travel Motors	Axial piston motor (×2) with planetary reduction

🖥️ Key Technologies & Features

1. 🧠 i-PM (Intelligent Power Management)

Automatically optimizes engine output and hydraulic flow matching
Reduces fuel consumption by up to 10–15% compared to conventional systems

2. 🌿 Eco Mode

Three operating modes: Power / Smart / Eco
Eco mode reduces engine RPM during light work, saving fuel

3. 💺 Advanced Operator Cab (especially LC-6)

Feature	Details
Air-conditioned cab	Full climate control with micro-filter
Suspension seat	Full-air suspension with armrests
Large LCD Monitor	10-inch multi-function display
JOYSTICK CONTROLS	Ergonomic levers with multi-function buttons
Camera system	Front, rear, and side cameras (LC-6)
Sound insulation	Reduced cabin noise to ~68 dB(A)
USB / Bluetooth	Connectivity options

4. 🔧 Maintainability

Side-opening engine hood for easy access
Centralized grease points for quick lubrication
Extended service intervals (500–1,000 hrs depending on region)

5. 🛡️ Safety Features

ROPS/FOPS certified cab
Emergency stop switch
Backup alarm & camera
Anti-theft immobilizer system

🔩 Common Attachments

Attachment	Application
🪨 Hydraulic Breaker (Hammer)	Rock breaking, demolition
✂️ Hydraulic Shear	Steel cutting, scrap processing
🫳 Orange Peel Grapple	Scrap handling, waste management
🪵 Thumb	Log grabbing, pipe handling
🕳️ Auger Drill	Piling, drilling
🪣 Tilting Bucket / Clean-up Bucket	Grading, finishing
🔗 Quick Coupler	Fast attachment change (auto/manual)
🪨 Ripper (Single Shank)	Hard ground, rock ripping

📊 Fuel Consumption (Approximate)

Mode	Fuel Consumption
Idle	~6 – 8 L/hr (1.6 – 2.1 US gal/hr)
Light Work	~18 – 22 L/hr (4.8 – 5.8 US gal/hr)
Heavy Work	~28 – 35 L/hr (7.4 – 9.2 US gal/hr)

💡 With Eco Mode + i-PM, fuel savings of 10–15% are achievable vs. conventional excavators.

🏗️ Typical Applications

Sector	Use Cases
General Construction	Excavation, trenching, foundation work
Mining & Quarrying	Rock loading, bench cutting
Demolition	Building tear-down with breaker/shear
Road Building	Grading, pipe laying
Landscaping	Large-scale earthmoving
River/Port Work	Dredging, bulk material handling

📈 Competitors Comparison

Machine	Weight	Power	Bucket
Hitachi ZX350LC-6	35,000 kg	247 HP	1.4–1.8 m³
CAT 336 / 336 GC	35,800 kg	265 HP	1.5–1.9 m³
Komatsu PC350LC-11	35,100 kg	253 HP	1.4–1.8 m³
Volvo EC350E	34,800 kg	252 HP	1.4–1.8 m³
Doosan DX350LC-5	34,600 kg	253 HP	1.4–1.8 m³
Kobelco SK350LC-10	34,700 kg	247 HP	1.4–1.8 m³
Hyundai R350LC-9S	35,100 kg	250 HP	1.4–1.8 m³

✅ Strengths of the ZX350

Strength	Description
🏆 Reliability	Hitachi's proven track record; low downtime
&Fuel Efficiency**	i-PM + Eco mode = class-leading fuel savings
🪑 Operator Comfort	One of the best cabs in its class
🔧 Easy Maintenance	Excellent accessibility, long service intervals
💪 Breakout Force	Strong digging and lifting power
📈 Resale Value	High residual value in global markets

⚠️ Considerations	Description
Price	Slightly higher initial cost vs. some Korean brands
Parts Availability	May vary by region (strong in Asia, Europe, Americas)

🏁 Summary

The Hitachi ZX350 is a premium 35-ton class excavator that excels in fuel efficiency, operator comfort, durability, and versatility. Whether it's the proven LC-5/5A or the latest LC-6, it's a workhorse machine trusted worldwide for the toughest jobs. With Hitachi's i-PM technology and an ergonomic cab, it's an excellent choice for contractors looking for low operating costs and high productivity.