Used Komatsu 450-8Excavator

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🏗️ Overview

The Komatsu PC450-8 (also known as PC450LC-8) is a large hydraulic mining excavator in the 45-ton class, representing the 8th generation of Komatsu's PC450 series. It was introduced around 2012–2013 as the successor to the PC450-7, designed primarily for heavy-duty mining, quarrying, and large-scale earthmoving operations.

It is one of Komatsu's flagship machines, combining high productivity, fuel efficiency, and advanced operator comfort.

📐 Key Specifications

Parameter	Specification
Model	PC450-8 / PC450LC-8
Generation	8th (Series 8)
Engine Model	Komatsu SAA6D125E-5
Engine Type	6-cylinder, turbocharged, aftercooled diesel
Displacement	12.81 liters (782 cu in)
Net Power	243 kW (326 hp) @ 1,800 rpm
Operating Weight	44,700 – 45,000 kg (98,500 – 99,200 lbs)
Bucket Capacity (Standard)	1.6 – 2.0 m³ (2.1 – 2.6 yd³)
Max Digging Depth	7,240 mm (23.75 ft)
Max Reach (Ground Level)	11,200 mm (36.75 ft)
Max Dump Height	7,760 mm (25.46 ft)
Max Digging Radius	10,770 mm (35.33 ft)
Working Pressure	35 MPa (5,075 psi)
Hydraulic Pump Flow	2 × 310 L/min (68.2 gal/min)
Track Shoe Width	700 mm (27.6 in)
Track Gauge	600 mm (23.6 in) — Triple Grouser
Emission Standard	EPA Tier 4 Final / EU Stage IV (with SCR + DPF)
Fuel Tank Capacity	750 L (198 gal)

& Engine — SAA6D125E-5

Feature	Detail
Cylinders	6 in-line
Displacement	12.81 L
Bore × Stroke	130 mm × 160 mm
Turbocharger	Single, with intercooler
Aftertreatment	SCR (Selective Catalytic Reduction) + DPF (Diesel Particulate Filter) + DOC
DEF (AdBlue) Tank	~30 L (for SCR system)
Fuel Efficiency	Improved ~10% over PC450-7

✅ The engine meets Tier 4 Final / Stage V emissions without sacrificing power output.

🔧 Hydraulic System

Feature	Detail
Pump Type	Variable displacement axial piston pump × 2
Total Flow	~620 L/min (136 gal/min)
Control System	EPC (Electronic Pump Controller) — matches pump output to engine power for optimal efficiency
Auxiliary Hydraulics	Available (for breakers, grapples, etc.)
Swing System	Hydraulic swing motor with auto-idle

🏗️ Undercarriage & Structure

Component	Specification
Track Frame	Heavy-duty X-frame design
Track Shoes	700 mm wide, triple grouser (600 mm gauge)
Rollers (per side)	9
Carrier Rollers (per side)	2
Sprocket	Rear-mounted
Ground Pressure	~78 kPa (11.3 psi)

The wide track shoes (700mm) provide excellent stability for heavy digging and slope work.

🖥️ Cab & Operator Comfort

The PC450-8 features Komatsu's latest-generation cab, one of the best in the industry:

Feature	Detail
ROPS/FOPS	✅ Roll-Over & Falling Object Protective Structure
Air Conditioning	✅ Full climate control
Seat	✅ Full air-suspension seat with heating
Display	✅ 10-inch full-color LCD monitor (KOMTRAX ready)
Joystick Controls	✅ Electronic proportional control
Auto-Idle	✅ Engine auto-idle when not working
Sound Level	~68 dB(A) (one of the quietest in class)
Vibration Control	✅ Advanced isolation mounts
Camera System	✅ Optional rear-view & side-view cameras
KOMTRAX	✅ Telematics for fleet management, diagnostics, and GPS tracking

📊 Performance Comparison: PC450-8 vs PC450-7

Parameter	PC450-7	PC450-8	Improvement
Engine Power	239 kW (320 hp)	243 kW (326 hp)	+2.5%
Fuel Efficiency	Baseline	~10% better	✅ Significant
Emissions	Tier 3	Tier 4 Final	✅ Major upgrade
Bucket Capacity	1.6–1.9 m³	1.6–2.0 m³	Slightly larger
Operating Weight	~44,000 kg	~44,700 kg	Slightly heavier
Cab Comfort	Good	Excellent	✅ Major upgrade
Hydraulic System	Conventional	EPC + advanced	✅ Smoother & efficient

🎯 Applications

Application	Suitability
🪨 Mining (Open Pit)	⭐⭐⭐⭐⭐ Primary use
🏗️ Quarrying	⭐⭐⭐⭐⭐
🏔️ Large Earthmoving	⭐⭐⭐⭐⭐
🚛 Loading Large Haul Trucks	⭐⭐⭐⭐⭐ (2–3 passes to load CAT 793F / Komatsu 930E)
🔨 Rock Breaking (with hydraulic breaker)	⭐⭐⭐⭐
🌲 Forestry (with grapple)	⭐⭐⭐⭐
🏚️ Demolition (with shear/crusher)	⭐⭐⭐⭐

💰 Approximate Pricing (2024 Estimates)

Configuration	Approximate Price (USD)
New Machine (Base)	$450,000 – $550,000
With A/C & Premium Cab	$520,000 – $600,000
Used (5,000–8,000 hrs)	$200,000 – $350,000

Prices vary by region, dealer, and configuration.

✅ Key Advantages

✅ Advantage	Description
💪 High Productivity	2.0 m³ bucket + 326 hp = fast cycle times
&Fuel Efficient**	EPC system saves ~10% fuel vs previous gen
🌍 Eco-Friendly	Tier 4 Final / Stage V compliant
🪑 Best-in-Class Cab	Comfort, visibility, and controls are industry-leading
📡 KOMTRAX Ready	Full telematics for fleet management
🔧 Easy Maintenance	Ground-level service points, wide-open engine compartment
🏋️ Reliable	Komatsu's proven SAA6D engine — extremely dependable

📋 Summary

Category	Rating
Power	⭐⭐⭐⭐⭐
Fuel Efficiency	⭐⭐⭐⭐⭐
Operator Comfort	⭐⭐⭐⭐⭐
Durability/Reliability	⭐⭐⭐⭐⭐
Technology	⭐⭐⭐⭐⭐
Value for Money	⭐⭐⭐⭐

📌 Bottom Line: The Komatsu PC450-8 is one of the best 45-ton class excavators in the world, ideal for high-production mining and quarrying operations. It offers an excellent balance of raw power, fuel efficiency, operator comfort, and environmental compliance.

Would you like me to compare it with competitors like the CAT 349 / 345, Hitachi ZX470, or Volvo EC480? 🚜