Used Doosan DX225-9 Excavator

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📌 1. General Overview

Item	Details
Manufacturer	Doosan Infracore (South Korea)
Model	DX225-9
Class	Mid-size (22–25 ton class)
Series	9th generation in the DX series
Emission Standard	Stage V / Tier 4 Final (SCR + DEF)
Primary Markets	Europe, North America, Asia, Middle East

The DX225-9 is one of Doosan's most popular mid-size crawler excavators, designed for versatility, fuel efficiency, and operator comfort. It replaces the DX225LC-9 and is part of Doosan's latest Stage V-compliant lineup.

🔧 2. Engine & Powertrain

Specification	Details
Engine Model	Doosan DV11TIS (6-cylinder, inline, turbocharged)
Displacement	11.15 L (680 cu in)
Rated Power	~129 kW (173 hp) @ 1,900 rpm
Max Torque	~686 Nm (506 lb-ft) @ 1,400 rpm
Emission System	SCR (Selective Catalytic Reduction) with DEF (Diesel Exhaust Fluid) — NO aftertreatment DPF required
Fuel Tank Capacity	~400 L (106 US gal)
Cooling System	Pressurized with auto-reversing fan

✅ The SCR-only system (without DPF) means lower maintenance costs and less downtime compared to DPF-equipped competitors.

& 3. Dimensions & Weight

Specification	Details
Operating Weight	~22,500 – 22,700 kg (49,600 – 50,050 lbs)
Transport Length	~9,990 mm (32.8 ft)
Transport Width	~3,190 mm (10.5 ft)
Transport Height	~3,180 mm (10.4 ft)
Ground Clearance	~460 mm (18.1 in)
Track Width	600 mm (23.6 in) triple-grouser or 500 mm (19.7 in)
Track Shoe Length	~3,600 mm (141.7 in)

🏗️ 4. Hydraulic System & Performance

Specification	Details
Main Pump Type	Variable displacement axial piston pump (2 pumps)
Max Flow Rate	~2 × 250 L/min (total ~500 L/min)
System Pressure	350 bar (5,076 psi) / 370 bar boost
Hydraulic Circuit	Load-sensing + EPC (Electronic Pump Control)
Swing System	Closed-center, with auto swing stop
Travel Motor	Variable displacement axial piston motors

🪣 5. Working Range (Digging Performance)

Specification	Details
Max Digging Depth	~7,060 mm (23.2 ft)
Max Reach (Ground Level)	~9,890 mm (32.4 ft)
Max Dumping Height	~7,380 mm (24.2 ft)
Max Digging Force (Boom)	~152 kN (34,200 lbf)
Max Digging Force (Arm)	~110 kN (24,700 lbf)
Bucket Capacity (Standard)	0.8 – 1.1 m³ (1.0 – 1.4 cu yd)
Max Bucket Capacity	Up to ~1.2 m³ (1.6 cu yd) with heavy-duty bucket

🖥️ 6. Cabin & Operator Comfort

Feature	Details
Cabin Type	Spacious, pressurized & filtered ROPS/FOPS certified
Noise Level	~67 dB(A) — one of the quietest in its class
Vibration Level	Very low due to hydraulic mount system
Seat	Fully adjustable, air-suspended, heated (optional)
Display	7-inch full-color LCD monitor with multi-function display
Climate Control	Auto A/C with dual-zone control
Controls	Electronic joysticks with proportional control
Camera System	Rear-view & side-view cameras available
USB/Bluetooth	Audio input, charging ports
Storage	Ample storage compartments

🧠 7. Smart Technology & Efficiency Features

Technology	Description
🟢 Eco Mode	Automatically optimizes engine speed & hydraulic flow for up to 10% fuel savings
🟢 Auto Idle Shutdown	Engine automatically shuts off after preset idle time (saves fuel & reduces emissions)
🟢 Auto Swing Stop	Automatically stops swing when controls are released
🟢 Travel Monitoring System	Tracks machine location & hours in real-time via telematics
🟢 DoosanCONNECT™	Telematics platform for fleet management, diagnostics & remote monitoring
🟢 Smart Work Mode	Selectable work modes: Power, Standard, Eco, Lifting
🟢 Auto Engine Speed Control	Adjusts RPM based on load demand

🛡️ 8. Durability & Maintenance

Feature	Benefit
Reinforced Boom & Arm	High-strength steel, optimized stress distribution
Undercarriage Protection	Heavy-duty X-frame with reinforced guards
Grease Points	Centralized, easy-access lubrication system
SCR System (No DPF)	No DPF regeneration needed → less maintenance, lower cost
Service Intervals	Engine oil: 500 hrs / Hydraulic oil: 4,000 hrs / Fuel filter: 500 hrs
Ground-Level Service Points	Easier daily maintenance access

🎯 9. Attachments & Versatility

The DX225-9 supports a wide range of attachments:

Attachment	Application
🪣 Standard / Heavy-duty bucket	General excavation
🔨 Hydraulic breaker	Demolition, rock breaking
🪓 Hydraulic hammer / crusher	Concrete crushing, demolition
🔩 Thumb (mechanical/hydraulic)	Pipe handling, log grappling
🧲 Magnetic grapple	Scrap metal handling
🌲 Grapple (orange peel / sorting)	Logging, waste sorting
🔧 Quick coupler	Fast attachment changeover
🏗️ Tiltrotator	Precision grading, pipe laying
🔩 Vibratory compactor plate	Compaction work
🪚 Tree shear	Forestry operations

📊 10. Comparison with Competitors

Feature	Doosan DX225-9	CAT 323 GC	Komatsu PC228USLC-11	Volvo EC230E
Power	173 hp	175 hp	174 hp	174 hp
Weight	22,500 kg	23,300 kg	22,800 kg	23,600 kg
Emission	SCR only ✅	SCR only	SCR only	SCR only
Fuel Efficiency	⭐⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐
Cabin Comfort	⭐⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐⭐
Maintenance Cost	⭐⭐⭐⭐⭐ (No DPF)	⭐⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐⭐
Telematics	DoosanCONNECT ✅	Cat Product Link	Komatsu Care	Volvo LIVE

💰 11. Approximate Pricing (2024 Estimates)

Region	Price Range (USD)
North America	$155,000 – $185,000
Europe	€140,000 – €170,000
Asia / Middle East	Varies by market

Prices vary based on configuration, attachments, and dealer.

✅ 12. Key Strengths Summary

✅ Strength	Explanation
🏆 Fuel Efficiency	Eco mode + smart hydraulics = best-in-class fuel economy
🏆 Low Maintenance	SCR-only (no DPF) = fewer issues, lower cost
🏆 Operator Comfort	Quiet cabin, great seat, excellent visibility
🏆 Smart Technology	DoosanCONNECT, auto-idle, multiple work modes
🏆 Durability	Proven Doosan build quality, reinforced structure
🏆 Versatility	Wide attachment range for multiple applications
🏆 Resale Value	Strong residual value globally

🏁 13. Typical Applications

🏗️ General Construction	🛣️ Road & Infrastructure
🏢 Building foundations	🛤️ Road excavation
🕳️ Utility trenching	🌉 Bridge work
🏔️ Land clearing	🔧 Pipeline laying
🏭 Site preparation	💧 Water/sewer projects
🪨 Quarry & mining (light)	🌲 Landscaping

🔚 Conclusion

The Doosan DX225-9 is widely regarded as one of the best mid-size excavators in the world, offering an excellent balance of:

🔑 Power + Efficiency + Comfort + Low Operating Cost

It is an ideal choice for contractors who want reliable performance, lower fuel & maintenance costs, and modern smart technology — all backed by Doosan's strong global dealer network and parts support.

Would you like more details on any specific aspect — such as hydraulic flow charts, attachment compatibility, or a side-by-side comparison with a specific competitor? 🚜