Used Komatsu 350-7Excavator

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📌 Overview

Item	Detail
Manufacturer	Komatsu Ltd. (Japan) 🇯🇵
Model	PC350-7 (also known as PC350LC-7)
Production Period	~2003 – 2008
Predecessor	PC350-6
Successor	PC350LC-8 / PC350-8
Class	Medium-to-Large Hydraulic Excavator (~35 ton class)
Primary Applications	General construction, mining, quarrying, road building, demolition, land clearing

The PC350-7 is one of Komatsu's most popular mid-size excavators, known for its reliability, fuel efficiency, and powerful performance. It sits between the smaller PC200/PC220 series and the larger PC400/PC450 series.

🔧 1. ENGINE SPECIFICATIONS

Parameter	Specification
Engine Model	Komatsu SAA6D114E-3
Type	6-cylinder, 4-stroke, turbocharged diesel with intercooler
Displacement	11.15 liters (680 cu in)
Rated Power	194 kW (260 HP) @ 2,000 rpm
Max Torque	997 N·m (735 lb-ft) @ 1,400 rpm
Emission Standard	EPA Tier 2 / EU Stage II (pre-Tier 4 Final)
Cooling System	Water-cooled with radiator
Fuel System	Common rail direct injection (CRDI)
Air Filter	Dry-type with pre-cleaner

✅ The SAA6D114E-3 engine is praised for its fuel efficiency and low emissions for its era.

& 2. OPERATING WEIGHT & DIMENSIONS

Parameter	Specification
Operating Weight	34,000 – 35,300 kg (74,960 – 77,820 lbs)
Total Length (w/ bucket)	~10,990 mm (36.1 ft)
Total Width	3,190 mm (10.5 ft)
Height (to cab top)	3,200 mm (10.5 ft)
Ground Clearance	450 mm (17.7 in)
Tail Swing Radius	3,190 mm (10.5 ft)

🪣 3. BUCKET & WORK RANGE

Parameter	Specification
Standard Bucket Capacity	1.3 – 1.6 m³ (1.7 – 2.1 yd³)
Max Bucket Capacity	Up to 1.8 m³ (2.35 yd³)
Max Digging Depth	7,150 mm (23.5 ft)
Max Digging Reach	10,240 mm (33.6 ft)
Max Dumping Height	7,310 mm (24.0 ft)
Max Dumping Reach	10,150 mm (33.3 ft)
Max Vertical Wall Dig	6,740 mm (22.1 ft)
Max Force (Boom Cylinder)	~155 kN (34,800 lbf)
Max Force (Arm Cylinder)	~115 kN (25,900 lbf)
Max Force (Bucket Cylinder)	~125 kN (28,100 lbf)

🛢️ 4. HYDRAULIC SYSTEM

Parameter	Specification
Main Pump Type	2 × Variable Displacement Axial Piston Pumps
Total Flow Rate	2 × 340 L/min = 680 L/min (179.6 GPM)
System Pressure	34.3 MPa (5,000 psi)
Swing Motor	Axial piston motor with brake
Swing Speed	8.0 rpm
Swing Torque	136 kN·m (100,300 lb-ft)
Travel Motor	2 × Axial piston motors
Travel Speed	5.2 km/h (3.2 mph)

🛤️ 5. UNDERCARRIAGE

Parameter	Specification
Track Width	600 mm (24 in) or 700 mm (28 in)
Track Shoe Width	600 / 700 mm (single or triple grouser)
Ground Contact Length	4,020 mm (13.2 ft)
Number of Rollers (per side)	7 (lower) + 1 (upper)
Number of Track Shoes	46

📦 6. FUEL & FLUIDS CAPACITY

Fluid	Capacity
Fuel Tank	600 Liters (158.5 US gal)
Engine Oil	38 Liters (10.0 US gal)
Hydraulic Tank	200 Liters (52.8 US gal)
Coolant	48 Liters (12.7 US gal)
Swing Gear Oil	9 Liters (2.4 US gal)

🖥️ 7. CAB & OPERATOR COMFORT

Feature	Detail
Cab Type	ROPS/FOPS certified, fully enclosed
Air Conditioning	✅ Standard
Heater	✅ Standard
Seat	Air-suspended, adjustable with armrests
Monitor	Multi-function LCD display (fuel, engine hours, diagnostics)
Joystick Control	✅ Proportional pilot control
Noise Level	~73 dB(A) (relatively quiet for its class)
Vibration	Low vibration design
Throttle Control	Electro-hydraulic with auto-idle

🏗️ 8. KEY FEATURES & TECHNOLOGIES

Feature	Description
🔄 KOMTRAX Ready	Remote machine monitoring & telematics system
⚡ ECO Mode	Fuel-saving mode reduces engine RPM during light work
🛡️ Advanced Auto-Idle	Engine auto-shuts down after 5 min of inactivity
🔧 Easy Maintenance	Ground-level service points, large tilt-up engine hood
🧠 Intelligent Hydraulic System	Load-sensing + flow-sharing for smooth operation
🔩 Heavy-Duty Boom & Arm	High-strength steel for durability in tough conditions
🔄 Quick Coupler Ready	Optional hydraulic quick coupler for attachment change
📐 Variable Track Width	Can be configured for 600mm or 700mm tracks

📊 9. PERFORMANCE COMPARISON

Spec	PC350-7	PC350-6 (Predecessor)	PC350-8 (Successor)
Power	260 HP	248 HP	276 HP
Weight	35,300 kg	34,500 kg	36,500 kg
Bucket	1.6 m³	1.5 m³	1.7 m³
Max Dig Depth	7,150 mm	6,950 mm	7,320 mm
Fuel Tank	600 L	570 L	600 L
Emission	Tier 2	Tier 2	Tier 4 Final

💰 10. MARKET & PRICING (Approximate)

Condition	Price Range (USD)
Used (2005-2008, 8,000-12,000 hrs)	$85,000 – $130,000
Used (Low hours, <5,000 hrs)	$130,000 – $170,000
New (if still available)	$280,000 – $320,000+

💡 Prices vary significantly by region, condition, and configuration.

✅ ADVANTAGES 👍

✔️ Pros
Excellent fuel efficiency for its class
Proven Komatsu reliability & durability
Strong resale value
Comfortable & quiet cab
Wide range of attachments available
Easy to maintain
Strong in both digging and loading operations
Excellent parts availability worldwide

⚠️ LIMITATIONS 👎

❌ Cons
Pre-Tier 4 Final emissions (may have restrictions in some regions)
Older technology compared to PC350-8
Heavy fuel consumption under full load
Higher maintenance cost as machines age (15+ years)

🔧 COMMON ATTACHMENTS

Attachment	Application
🪣 Standard Bucket	General digging
🔨 Hydraulic Breaker (Hammer)	Demolition, rock breaking
' Hydraulic Shear	Metal cutting/scrap
🪵 Grapple	Log handling, sorting
🪝 Quick Coupler	Fast attachment change
🔩 Thumb	Pipe, log, material handling
🧹 Tilt Rotator	Grading, forestry
🪨 Ripper	Hard ground, frozen soil

🎯 SUMMARY

Category	Rating (out of 5)
Power	⭐⭐⭐⭐
Fuel Efficiency	⭐⭐⭐⭐⭐
Reliability	⭐⭐⭐⭐⭐
Comfort	⭐⭐⭐⭐
Resale Value	⭐⭐⭐⭐⭐
Versatility	⭐⭐⭐⭐⭐

🏆 The Komatsu PC350-7 is widely regarded as one of the BEST mid-size excavators ever made. It represents the sweet spot of power, efficiency, and reliability — making it a favorite among contractors, rental companies, and mining operations worldwide. Even after nearly 20 years, it remains a highly sought-after used machine on the global market.

Would you like more details on any specific aspect — like maintenance schedule, comparisons with CAT 336/340, or buying tips? 🚜