Used Komatsu 400-8RExcavator

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📌 1. OVERVIEW

Item	Details
Model	PC400-8R (also written PC400LC-8R)
Series	8th Generation R-Series (Redesigned)
Manufacturer	Komatsu Ltd. (Japan)
Emission Standard	Stage V / Tier 4 Final (SCR + DEF)
Launch Year	~2018–2019
Class	Large Hydraulic Excavator (~40-ton class)
Primary Use	Mining, quarrying, large-scale earthmoving, infrastructure, demolition

The "R" stands for Redesigned — representing Komatsu's 8th generation with significant improvements in fuel efficiency, operator comfort, and intelligent machine control.

📌 2. ENGINE SPECIFICATIONS

Parameter	Specification
Engine Model	Komatsu SAA6D125E-5
Type	6-cylinder, inline, turbocharged & aftercooled diesel
Displacement	11.98 liters
Net Power	216 kW (290 hp) @ 1,800 rpm
Max Torque	1,177 N·m @ 1,400 rpm
Emission Technology	SCR (Selective Catalytic Reduction) + DPF (Diesel Particulate Filter) + DEF (Diesel Exhaust Fluid)
Fuel Tank Capacity	~580 liters
DEF Tank Capacity	~40 liters

📌 3. DIMENSIONS & WEIGHT

Parameter	Specification
Operating Weight	39,500 – 40,500 kg (varies by config: with/without boom, counterweight, bucket)
Transport Length	~11,310 mm
Transport Width	3,190 mm
Transport Height	3,340 mm
Ground Clearance	470 mm
Track Shoe Width	600 mm (triple grouser option available)
Tail Swing Radius	2,670 mm ✅ (excellent for tight spaces)
Min Swing Radius	3,420 mm

📌 4. PERFORMANCE (WORKING RANGE)

Parameter	Specification
Standard Bucket Capacity	1.93 m³ (2.53 yd³)
Heavy Duty Bucket	Up to 2.2 m³ (optional)
Max Digging Depth	7,360 mm
Max Digging Reach	11,030 mm
Max Digging Height	10,480 mm
Max Dumping Height	7,380 mm
Max Vertical Wall Digging Depth	6,120 mm
Max Reach at Ground Level	10,870 mm
Max Pull Force	~200 kN
Max Breakout Force (Boom)	~168 kN
Max Breakout Force (Arm)	~130 kN

📌 5. HYDRAULIC SYSTEM

Parameter	Specification
Main Pump Type	Variable displacement axial piston pump × 2
Total Pump Flow	2 × 274 L/min = 548 L/min
System Pressure (Standard)	34.3 MPa (5,000 psi)
System Pressure (Power Boost)	39.2 MPa (5,680 psi) 🔥
Swing System	Hydraulic motor swing
Swing Speed	8.5 rpm
Travel Speed (High/Low)	5.6 / 3.7 km/h
Control System	EPOS (Electro-Proportional Operation System) — smooth, precise control

📌 6. KEY FEATURES & TECHNOLOGY ⭐

🖥️ Intelligent Machine Control (iMC) — Ready

Feature	Description
GPS/GNSS	RTK-GPS for centimeter-level accuracy
2D Machine Guidance	Grade control, slope matching
3D Machine Guidance	Design model-based digging (CAD data)
Auto-Grade	Automatic boom/bucket control to hit target grades
3D Grade Control	Real-time 3D positioning display

📡 KOMTRAX Telematics

Real-time machine monitoring (location, hours, fuel, engine status, fault codes)
Remote diagnostics via smartphone/web
Fleet management capability

🌿 ECO Mode & Fuel Efficiency

Mode	Description
P (Power)	Full power for heavy digging
S (Standard)	Balanced performance
E (ECO)	Reduced engine speed for lighter work → up to 10–15% fuel savings
Auto Idle Shutdown	Engine auto-stops after 5 min of inactivity
Auto Engine Speed Control	Engine RPM automatically adjusts to workload

🪑 Operator Comfort — One of the Best in Class

Feature	Details
Cab Type	ROPS/FOPS certified, spacious
Seat	Full air suspension seat with heating 🔥
Climate Control	Full auto A/C with micro-filter
Display	7-inch or 10-inch full-color LCD monitor
Joysticks	Electro-proportional with multi-function buttons
Noise Level	~68 dB(A) — very quiet for its class
Vibration	Significantly reduced vs. previous generation
Camera	Rear-view camera standard
LED Lights	Full LED work lights (front, rear, boom, undercarriage)

🔧 KOMCD (Komatsu Construction Data Management)

Data collection for productivity analysis
Integration with office software for report generation

📌 7. UNDERCARRIAGE OPTIONS

Option	Description
Standard Track	600 mm triple grouser
Wide Track	700 mm (for soft ground / swamp)
Extra-Wide Track	800 mm (for extreme soft ground)
Steel Shoe	For rocky/abrasive conditions
Rubber Pad	For urban/pavement work

📌 8. COMPARISON WITH PREVIOUS MODEL (PC400-8)

Feature	PC400-8 (Old)	PC400-8R (New)	Improvement
Engine Power	246 kW (330 hp)	216 kW (290 hp)	Slightly lower but more efficient
Fuel Efficiency	Baseline	~10–15% better ✅
Emission	Tier 4 Interim	Tier 4 Final (Stage V) ✅
Cab Comfort	Good	Excellent (air suspension, quieter) ✅
iMC Ready	Optional	Standard Ready ✅
Display	7-inch	7" or 10" color LCD ✅
Tail Swing	2,810 mm	2,670 mm ✅	Tighter swing

⚡ Note: The 8R has slightly less raw power but delivers significantly better fuel economy and lower operating costs.

📌 9. APPLICATIONS

Industry	Use Case
🪨 Mining	Loading haul trucks, bench digging
🏗️ Construction	Foundation excavation, trench digging
🧱 Quarrying	Rock breaking, loading
🛣️ Infrastructure	Road building, pipeline trenches
🏚️ Demolition	Heavy demolition with hydraulic breaker
🌍 Landscaping	Large-scale grading (with tiltrotator)

📌 10. COMPETITORS

Model	Manufacturer	Class
CAT 440 GC	Caterpillar	~40-ton
Volvo EC480E	Volvo CE	~48-ton
Hitachi ZX470LCH-6	Hitachi	~47-ton
Doosan DX420LC-7	Doosan	~42-ton
Hyundai R470LC-9A	Hyundai	~47-ton

📌 11. SUMMARY — WHY CHOOSE PC400-8R?

✅ Strength	Description
🔋 Fuel Efficiency	Best-in-class with ECO mode (~10-15% savings)
🧠 Smart Technology	iMC + KOMTRAX + KOMCD — ready for digital construction
🪑 Operator Comfort	Air suspension seat, quiet cab, excellent visibility
🔄 Tight Tail Swing	2,670 mm — great for urban/confined sites
🛡️ Emission Compliant	Stage V / Tier 4 Final — future-proof
💪 Proven Reliability	Komatsu's legendary durability + global parts network
📉 Low Operating Cost	Lower fuel + longer service intervals = better TCO

📌 12. ESTIMATED PRICING (2024)

Region	Approximate Price (USD)
USA/Europe	$350,000 – $420,000
Asia (China/SEA)	$300,000 – $380,000
Used (2019–2021)	$200,000 – $280,000

Prices vary significantly by configuration (boom length, bucket type, attachments, iMC package, etc.)

🏆 Bottom Line:

The Komatsu PC400-8R is one of the most advanced, fuel-efficient, and operator-friendly 40-ton excavators on the market. It's the go-to choice for contractors who prioritize low operating costs, smart technology, and operator comfort — especially in mining, quarrying, and large-scale earthmoving operations.

Would you like me to compare it with a specific competitor, or go deeper into any particular aspect (attachments, maintenance, etc.)? 🚜