Used Komatsu 450-8Excavator

Reading: 12

📌 1. OVERVIEW

The Komatsu PC450-8 is a large-class hydraulic excavator in the 45-ton (44,700–45,300 kg) category, designed for heavy-duty earthmoving, mining, quarrying, and large-scale construction projects. It is part of Komatsu's -8 generation (launched ~2012–2015), replacing the earlier PC450-7 model. The "-8" series features improved fuel efficiency, operator comfort, and advanced electronics.

📌 2. KEY SPECIFICATIONS

Parameter	Specification
Operating Weight	~44,700 – 45,300 kg (98,600 – 99,900 lbs)
Engine Model	Komatsu SAA6D125E-5
Engine Type	6-cylinder, turbocharged, aftercooled diesel
Rated Power	243 kW (326 hp) @ 1,900 rpm
Max Torque	~1,340 N·m (988 lb-ft) @ 1,300 rpm
Displacement	11.64 L (710 cu in)
Emission Standard	EPA Tier 4 Final / EU Stage IIIB / Japan 2014
Fuel Tank Capacity	~650 L (171.7 US gal)
Hydraulic Tank Capacity	~150 L (39.6 US gal)
Swing Speed	~7.0 rpm
Travel Speed	~4.8 km/h (3.0 mph)
Ground Pressure	~75 kPa (10.9 psi)

📌 3. DIMENSIONS & WORKING RANGE

Parameter	Value
Transport Length	~11,270 mm (37.0 ft)
Transport Width	~3,190 mm (10.5 ft)
Transport Height	~3,310 mm (10.9 ft)
Max Digging Depth	~7,060 mm (23.2 ft)
Max Digging Reach	~10,440 mm (34.3 ft)
Max Dumping Height	~7,380 mm (24.2 ft)
Max Digging Radius (Ground Level)	~10,230 mm (33.6 ft)
Max Vertical Wall Digging Depth	~6,120 mm (20.1 ft)
Bucket Capacity (Standard)	1.6 – 2.2 m³ (2.1 – 2.9 cu yd)
Blade Width	3,190 mm (10.5 ft)

📌 4. ENGINE — SAA6D125E-5

Feature	Detail
Configuration	Inline 6-cylinder, DOHC, 24 valves
Turbocharger	Single turbo with intercooler
Fuel System	Common rail direct injection (CRDI)
Emission Tech	DPF (Diesel Particulate Filter) + SCR (Selective Catalytic Reduction) with AdBlue/DEF
Fuel Efficiency	Improved ~10–15% over PC450-7
Cooling System	Pressurized water cooling with 2 radiators

The SAA6D125E-5 is one of Komatsu's workhorse engines, known for reliability and durability in harsh conditions.

📌 5. HYDRAULIC SYSTEM

Feature	Detail
Pump Type	Variable displacement axial piston pump (×2 main + ×1 pilot)
System Pressure	34.3 MPa (4,975 psi)
Flow Rate	~2 × 320 L/min (total ~640 L/min)
Control System	EPC (Electronic Pump Controller) — load-sensing, pressure-compensated
Auxiliary Hydraulics	Available (for hammer, grapple, etc.) — up to ~190 L/min

📌 6. UNDERCARRIAGE

Feature	Detail
Track Shoe Width	600 mm (23.6 in) / 700 mm (27.6 in) / 800 mm (31.5 in) options
Number of Rollers	2 per side (upper) + 9 per side (lower)
Track Pitch	2,140 mm (84.3 in)
Shoe Length	~4,600 mm
Ground Contact Length	~3,700 mm

📌 7. OPERATOR CAB & COMFORT

Feature	Detail
Cab Type	ROPS/FOPS certified, pressurized & filtered
Air Conditioning	Fully automatic climate control
Seat	Air-suspended, heated, with armrest
Display	10.4-inch full-color LCD monitor with multi-function display
Controls	Electronic joystick with auto-idle, work mode selector
Noise Level	~69 dB(A) (very quiet for its class)
Visibility	Large windshield, rear-view camera, work light
Smartphone Connectivity	Optional Komtrax telematics integration

📌 8. INTELLIGENT MACHINE CONTROL (IMC) — OPTIONAL

Feature	Detail
GPS/GNSS Ready	3D machine control ready (Topcon, Trimble, Leica compatible)
Auto-Grade	Automatic blade/bucket control for grading
2D/3D Grading	Laser or GPS-based automatic leveling
Automation	Semi-autonomous operation capability

📌 9. SAFETY & MAINTENANCE

Feature	Detail
Anti-Theft	Engine immobilizer, Komatsu Smartlock
Daily Check	Easy-access ground-level service points
Grease Points	Centralized auto-lubrication system
Fuel Filter/Water Separator	Easy access, ground-level drain
DEF (AdBlue) Tank	~30 L, easy refill access
Service Intervals	Engine oil: 500 hrs / Hydraulic oil: 4,000 hrs

📌 10. APPLICATIONS

Application	Detail
🏗️ Large-scale excavation	Foundation, trench, basement work
& Mining & quarrying	Loading haul trucks, bench work
🛣️ Road construction	Embankment, cutting, grading
🏗️ Demolition	With hydraulic breaker or crusher attachment
🌊 Dredging	With long-reach or dredge bucket
🌲 Forestry	With grapple attachment

📌 11. COMPARISON: PC450-8 vs PC450-7

Feature	PC450-7	PC450-8
Engine	SAA6D125E-3	SAA6D125E-5
Power	243 kW (326 hp)	243 kW (326 hp)
Emissions	Tier 3	Tier 4 Final
Fuel Efficiency	Baseline	~10–15% better
Cab	Conventional LCD	Larger 10.4" LCD + better ergonomics
Weight	~44,700 kg	~45,300 kg
Hydraulics	EPC	Enhanced EPC
Telematics	Basic	Komtrax advanced

📌 12. COMPETITORS

Model	Operating Weight	Power
🔵 CAT 349 GC / 349	~48,000 kg	261 kW (350 hp)
🟡 Hitachi ZX470LCH-6	~46,700 kg	254 kW (340 hp)
🔴 Volvo EC480E	~48,000 kg	270 kW (362 hp)
🟠 Doosan DX420LC-9C	~42,000 kg	235 kW (315 hp)
🟢 Hyundai R480LC-9A	~47,000 kg	254 kW (340 hp)

The PC450-8 is highly competitive, especially in fuel efficiency, residual value, and dealer network.

📌 13. PRICE (Approximate, 2024)

Region	Estimated Price (USD)
🇺🇸 USA/North America	$380,000 – $450,000
🇪🇺 Europe	€350,000 – €420,000
🌏 Asia-Pacific	$300,000 – $380,000
📦 Used (2015–2018)	$180,000 – $280,000

(Prices vary by configuration, attachments, and market conditions)

✅ SUMMARY — WHY CHOOSE PC450-8?

✅ Strength	📝 Detail
💪 Proven Engine	SAA6D125E-5 is legendary for reliability
&Fuel Efficient**	Best-in-class for 45-ton machines
🤖 Smart Technology	IMC-ready, Komtrax, large LCD
🪑 Operator Comfort	Best cabin in its class
🔧 Low Maintenance	Long service intervals, easy access
📈 Resale Value	Komatsu holds value exceptionally well
🌍 Global Support	180+ countries, massive parts network

🔑 Bottom Line: The Komatsu PC450-8 is one of the best large hydraulic excavators in the 45-ton class — offering a perfect balance of power, efficiency, technology, and durability for the most demanding jobs worldwide.

Would you like more details on any specific aspect (e.g., attachment compatibility, fuel consumption data, or comparison with a specific competitor)? 🚜