Used Komatsu 450-8Excavator

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📌 1. GENERAL OVERVIEW

Parameter	Details
Model	PC450-8
Manufacturer	Komatsu Ltd. (Japan)
Class	45-ton (Large Hydraulic Excavator)
Production Period	~2012 – Present
Predecessor	PC450-7
Series	Komatsu -8 Series (next-gen platform)
Primary Use	Mining, quarrying, large-scale earthmoving, demolition

The PC450-8 is Komatsu's flagship 45-ton class excavator, designed for heavy-duty operations requiring high productivity, fuel efficiency, and operator comfort. It features the latest -8 series platform with advanced electronics, improved hydraulics, and Tier 4 Final / Stage IIIB emission compliance.

🔧 2. ENGINE SPECIFICATIONS

Specification	Details
Engine Model	Komatsu SAA6D125E-5
Type	6-cylinder, inline, turbocharged diesel
Displacement	11.638 L (11,638 cc)
Rated Power	247 kW (331 hp) @ 1,900 rpm
Max Torque	~1,373 Nm (1,013 lb-ft) @ 1,300 rpm
Emission Standard	EPA Tier 4 Final / EU Stage IIIB
Aftertreatment	DPF (Diesel Particulate Filter) + SCR (Selective Catalytic Reduction) + DOC (Diesel Oxidation Catalyst)
DEF Tank (AdBlue)	~40 L (for SCR system)
Cooling System	Pressurized, with separate oil cooler

✅ The SAA6D125E-5 is known for its excellent fuel efficiency and reliability in harsh conditions.

& 3. OPERATING WEIGHT & DIMENSIONS

Parameter	Value
Operating Weight	~44,900 – 46,700 kg (99,000 – 103,000 lbs) (varies by config)
Transport Length	~11,160 mm (36.6 ft)
Transport Width	3,190 mm (10.5 ft)
Transport Height	3,360 mm (11.0 ft)
Track Gauge	2,600 mm (8.5 ft)
Ground Clearance	480 mm (18.9 in)
Tail Swing Radius	~3,340 mm (11.0 ft)

🪣 4. WORKING RANGE & PERFORMANCE

Parameter	Value
Max Digging Depth	~7,340 mm (24.1 ft)
Max Digging Reach	~11,430 mm (37.5 ft)
Max Digging Height	~10,160 mm (33.3 ft)
Max Dump Height	~7,250 mm (23.8 ft)
Max Vertical Wall Dig	~5,970 mm (19.6 ft)
Bucket Capacity (Std)	1.8 – 2.2 m³ (2.4 – 2.9 yd³)
Max Bucket Capacity	Up to ~2.8 m³ (3.7 yd³) (with heavy-duty bucket)
Bucket Breakout Force	~196 kN (44,000 lbf)
Arm Crowd Force	~147 kN (33,000 lbf)
Track Ground Pressure	~81 kPa (11.8 psi)

🛢️ 5. HYDRAULIC SYSTEM

Specification	Details
Pump Type	2 × Variable Displacement Axial Piston Pumps (Kawasaki)
Total Flow	2 × 330 L/min = 660 L/min (174 gal/min)
Operating Pressure	35 MPa (5,076 psi)
Swing System	Closed-center, load-sensing
Travel Motors	2 × Variable displacement axial piston motors
Swing Speed	~7.5 rpm
Travel Speed	~3.7 km/h (2.3 mph)

🔑 The load-sensing hydraulic system matches flow/pressure to demand, saving up to 10-15% fuel vs. older models.

🪟 6. CAB & OPERATOR COMFORT

Feature	Details
Cab Type	ROPS/FOPS Certified, fully enclosed, pressurized
Air Conditioning	✅ Full-auto climate control
Seat	Air-suspended, fully adjustable, heated (optional)
Display	10.4" Full-color LCD monitor with Komtrax
Controls	Joystick with auto-idle, thumb controls
Camera	Rearview camera (standard on most models)
Lighting	LED work lights (front, rear, boom)
Noise Level	~73 dB(A) (one of the quietest in class)
USB/Bluetooth	✅ Available

📡 7. TECHNOLOGY & SMART FEATURES

Technology	Description
KOMTRAX	Remote machine monitoring, location tracking, maintenance alerts
iMC Ready	Intelligent Machine Control — GPS/GNSS ready for 3D grade control
ECO Mode	Reduces engine RPM during light work → saves 5-10% fuel
Auto Engine Speed Control	Auto-adjusts RPM based on hydraulic demand
Auto Idle	Engine idles down when not working
Smart Operate System	Digital monitoring of all machine parameters
Remote Diagnostics	Dealer can diagnose issues remotely via KOMTRAX

🛤️ 8. UNDERCARRIAGE

Specification	Details
Track Width	600 mm (23.6 in)
Shoe Type	Triple grouser (standard)
Number of Rollers	7 per side
Number of Carrier Rollers	2 per side
Sprocket	Rear-mounted drive sprocket
Track Length on Ground	~3,500 mm (138 in)

🔩 Heavy-duty undercarriage designed for abrasive rock and mining applications.

⛽ 9. FUEL & CAPACITIES

Parameter	Value
Fuel Tank	~750 L (198 US gal)
DEF (AdBlue) Tank	~40 L (10.6 gal)
Engine Oil	~33 L (8.7 gal)
Hydraulic Oil Tank	~150 L (39.6 gal)
Coolant	~45 L (11.9 gal)

⏱️ Typical fuel consumption: ~30–40 L/hr (8–10.5 gal/hr) depending on workload.

🆚 10. COMPARISON: PC450-8 vs PC450-7

Feature	PC450-7 (Old)	PC450-8 (New)
Engine	SAA6D125E-3 (261 kW)	SAA6D125E-5 (247 kW) (optimized)
Fuel Efficiency	Baseline	~10-15% better
Emissions	Tier 3 / Stage IIIA	Tier 4 Final / Stage IIIB
Weight	~45,500 kg	~44,900 kg (lighter)
Cab	Standard	Upgraded with LCD, quieter
Technology	Basic	KOMTRAX, iMC, ECO mode
Hydraulic Flow	2×310 L/min	2×330 L/min (more power)

📊 11. KEY STRENGTHS ✅

✅ Strength	Explanation
🏆 Fuel Efficiency	Best-in-class for 45-ton segment (~10-15% savings)
💪 High Breakout Force	196 kN — handles hard rock with ease
🔇 Low Noise	~73 dB — operator-friendly
🧠 Smart Technology	iMC-ready, KOMTRAX, ECO mode
🛡️ Reliability	Komatsu's proven SAA6D125 engine — 20,000+ hr life
🌍 Emission Compliant	Tier 4 Final — works in strict emission zones
🔧 Easy Maintenance	Ground-level service points, wide-open engine compartment

📋 12. TYPICAL APPLICATIONS

Application	Suitability
🪨 Mining (Open Pit)	⭐⭐⭐⭐⭐ Excellent
🏗️ Large Earthmoving	⭐⭐⭐⭐⭐ Excellent
🧱 Quarrying	⭐⭐⭐⭐⭐ Excellent
🏚️ Demolition	⭐⭐⭐⭐ Very Good
🛣️ Road Construction	⭐⭐⭐⭐ Very Good
🌊 Dredging	⭐⭐⭐ Good (with long reach)

💰 13. APPROXIMATE PRICING (2024)

Condition	Price Range (USD)
New	$450,000 – $550,000
Used (2015-2018, ~5,000 hrs)	$180,000 – $280,000
Used (2012-2014, ~10,000 hrs)	$130,000 – $200,000

(Prices vary significantly by region, configuration, and condition)

🎯 14. SUMMARY

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

🏅 The Komatsu PC450-8 is widely regarded as one of the best 45-ton excavators in the world, combining raw power with intelligent technology and outstanding fuel economy. It is the go-to machine for mining and quarrying operations worldwide.

Would you like me to go deeper into any specific area — such as maintenance schedule, attachment options, or comparison with CAT 349 / Hitachi ZX470? 🔧