Used Komatsu 350-7Excavator

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📌 Overview

The Komatsu PC350-7 is a large hydraulic excavator in the 35-ton class, introduced around 2007–2008 as part of Komatsu's -7 series. It replaced the PC350-6 and was designed for heavy-duty earthmoving, mining, quarrying, and large-scale construction applications. It is known for its fuel efficiency, durability, advanced operator comfort, and readiness for intelligent machine control (iMC) systems.

🔧 Engine Specifications

Parameter	Specification
Engine Model	Komatsu SAA6D114E-5
Type	6-cylinder, turbocharged, aftercooled diesel
Displacement	11.4 L (696 cu in)
Rated Power	183 kW (246 hp) @ 2,000 rpm
Max Torque	931 N·m (687 lb-ft) @ 1,400 rpm
Emission Standard	EPA Tier 3 / EU Stage IIIA (market dependent)
Fuel Capacity	600 L (158.5 US gal)

✅ The engine features electronic fuel injection for optimized combustion, better fuel economy, and lower emissions.

⚙️ Hydraulic System

Parameter	Specification
Pump Type	2 × Variable Displacement Axial Piston Pumps
System Pressure	34.3 MPa (4,975 psi)
Total Flow	2 × 330 L/min (87.2 gpm)
Swing System	Hydraulic swing with pump-controlled motor
Travel Motor	2 × Axial piston motors (with parking brake)

📐 Dimensions & Weights

Parameter	Specification
Operating Weight	34,200 – 36,000 kg (75,400 – 79,400 lbs)
Transport Length	10,780 mm (35 ft 4 in)
Transport Width	3,190 mm (10 ft 6 in)
Transport Height	3,270 mm (10 ft 9 in)
Track Gauge	2,590 mm (8 ft 6 in)
Ground Clearance	460 mm (18.1 in)
Track Shoe Width	600 mm (23.6 in)
Tail Swing Radius	3,140 mm (10 ft 4 in)

💪 Performance (Digging & Lifting)

Parameter	Specification
Max Digging Depth	7,030 mm (23 ft 1 in)
Max Digging Reach	10,030 mm (32 ft 11 in)
Max Dumping Height	7,220 mm (23 ft 8 in)
Max Digging Force (Boom/Arm/Bucket)	~230 kN (51,700 lbf)
Max Breakout Force	~163 kN (36,645 lbf)
Max Lifting Capacity	~13,600 kg (30,000 lbs)
Swing Speed	8.0 rpm
Travel Speed	4.9 km/h (3.0 mph)
Gradeability	70% (35°)

🪣 Bucket Capacities

Bucket Type	Capacity
Standard (Rock)	1.2 – 1.5 m³ (1.57 – 1.96 cu yd)
Heavy Duty (HD)	Up to 1.8 m³ (2.35 cu yd)
Minimum Bucket	0.5 m³ (0.65 cu yd)

🖥️ Operator Comfort & Cab

Feature	Details
Cab Type	ROPS/FOPS certified, fully enclosed, pressurized
Air Conditioning	✅ Fully automatic climate control
Seat	✅ Air-suspension, heated, with armrests
Display	✅ 7-inch LCD multi-function monitor
Controls	✅ Pilot-operated joysticks with auto-idle
Noise Level	~72 dB(A) (one of the quietest in class)
Lighting	LED work lights (front, rear, boom)
Sound System	AM/FM radio + auxiliary input
Camera	Optional rear-view camera

🧠 Technology & Smart Features

Feature	Description
KOMTRAX	✅ Remote machine monitoring & diagnostics
Intelligent Machine Control (iMC)	✅ GPS/GNSS-ready for 2D/3D grading
Eco Mode	✅ Auto engine speed reduction for fuel saving (up to 10%)
Auto Idle	✅ Engine auto-shuts off after 5 min inactivity
Advanced Monitoring System	Real-time fuel consumption, engine hours, fault codes
Dozer Blade Control	Optional (front/rear blade)
Quick Coupler Ready	✅ Hydraulic quick coupler for attachment change

🔧 Maintenance Features

Feature	Benefit
Side-access panels	Easy engine & hydraulic access
Centralized grease points	Fast daily lubrication
Long service intervals	Engine oil: 500 hrs / Hydraulic oil: 4,000 hrs
Undercarriage inspection	Easy track tension adjustment
Ground-level fuel cap	No ladder needed

🏗️ Typical Applications

Application	Notes
🏗️ Large-scale excavation	Foundation, trench, road work
⛏️ Mining & Quarrying	Rock loading, bench work
🪨 Heavy demolition	With hydraulic breaker/crusher
🏔️ Slope & hill work	Excellent gradeability & stability
🚛 Truck loading	High digging force & reach
🌉 Infrastructure	Bridge, dam, tunnel projects

📊 PC350-7 vs Competitors

Spec	PC350-7	CAT 336	Volvo EC350E	Hitachi ZX350-6
Power	246 hp	241 hp	252 hp	241 hp
Operating Weight	35,200 kg	35,900 kg	34,200 kg	34,800 kg
Max Dig Depth	7,030 mm	7,010 mm	7,020 mm	6,990 mm
Fuel Tank	600 L	568 L	500 L	550 L
iMC Ready	✅	✅ (Grade Control)	✅	✅

🏆 The PC350-7 is often praised for its best-in-class fuel efficiency, spacious cab, and excellent resale value.

✅ Summary — Why Choose the PC350-7?

Strength	Detail
⚡ Powerful & Efficient	246 hp with Eco Mode saves up to 10% fuel
🏠 Best Cab Comfort	Spacious, quiet, climate-controlled
🧠 Smart-Ready	KOMTRAX + iMC for precision work
🔧 Low Maintenance	Long intervals, easy access
💪 Reliable & Durable	Proven Komatsu build quality
💰 Strong Resale Value	Highly demanded in used market

The Komatsu PC350-7 remains one of the most popular mid-large excavators in the world, offering an excellent balance of power, efficiency, comfort, and technology for demanding worksites. 🚜💪