Used Doosan 225-9 Excavator

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Here is a detailed English introduction to the Doosan 225-9 excavator. Please note that the official model designation is typically Doosan DX225LC-9 (the “LC” denotes Long Carriage for enhanced stability, and the “-9” is the Series 9). This machine is a mid-size crawler excavator widely used in construction, earthmoving, demolition, and utility work.

Doosan DX225LC-9 (225-9 Series) Excavator Overview

The Doosan DX225LC-9 is a 22-ton class crawler excavator that delivers a class-leading combination of power, fuel efficiency, and durability. Part of Doosan’s advanced “-9” Series, this machine integrates a high-performance, low-emission engine with an electronically optimized hydraulic system to maximize productivity while reducing operating costs. The cab has been completely redesigned for superior operator comfort and safety, and the robust structure is engineered to withstand the toughest job site conditions. With improved serviceability and extended maintenance intervals, the DX225LC-9 is designed to increase uptime and provide a fast return on investment.

Key Features and Advantages

1. High-Performance, Fuel-Efficient Engine

Engine Model: Doosan DL06P
Type: 6-cylinder, 4-stroke, turbocharged, air-to-air intercooled diesel engine with High-Pressure Common Rail (HPCR) fuel injection.
Net Power: 128 kW (172 HP) @ 1,800 rpm (varies slightly by market emission standard).
Emission Compliance: Meets EU Stage IIIB / EPA Tier 4 Interim or equivalent standards using cooled Exhaust Gas Recirculation (EGR) and a Diesel Particulate Filter (DPF), without the need for Selective Catalytic Reduction (SCR) on most configurations. This reduces complexity and allows for clean, efficient operation.
Fuel Efficiency: The electronically controlled HPCR system delivers fuel at ultra-high pressure through multiple injection events, ensuring complete combustion. Combined with the engine’s low-speed torque characteristics, it delivers remarkable fuel savings—often 3–7% improvement over the previous Dash-7 model—especially in heavy-duty applications.

2. Advanced Hydraulic System

System Type: Intelligent Electronic-Controlled Hydraulic System (e-EPOS) with closed-center, load-sensing technology.
Main Pumps: Two variable-displacement axial piston pumps plus one gear pump for pilot circuits.
Total Flow: High oil flow for fast cycle times and strong multifunction capability.
Fine Touch Control: Joystick inputs are precisely managed by the electronic system, which adjusts hydraulic flow and pressure in real time. This eliminates unnecessary power loss, reduces operator fatigue, and provides incredibly smooth and precise control—whether lifting delicate materials or digging in hard ground.
Power Modes: Four selectable work modes (P, S, E, and user-defined) allow operators to match machine performance to the task, optimizing fuel consumption or power as needed.
Lifting Mode: Dedicated lifting mode increases pump torque and engine RPM at lower lever inputs, providing enhanced fine control and lifting capacity, crucial for pipe laying and material handling.

3. Durability and Structural Integrity

Boom and Arm: Constructed from high-strength, multi-plate welded box-section steel. Castings are used at critical stress points to increase strength and extend lifespan. The arm features a reinforced pivot area and thickened side plates. All welds are robotically applied for consistency and penetration.
Undercarriage: The Long Carriage (LC) undercarriage provides a longer track footprint for exceptional stability during digging and lifting. It features:
- Sealed and lubricated track links (SALT) to extend pin and bushing life.
- Reinforced, rigid track frame with high-quality steel track shoes (triple grouser for traction).
- Heavy-duty idler and sprocket designs.
- Single-flange bottom rollers and double-flange top rollers.
Upper Frame: The upper structure is engineered with finite element analysis to resist torsional stress and vibration. Key areas are reinforced to endure impacts during demolition and rock digging.
Work Tools: Buckets are available in a wide range of sizes (0.8 to 1.28 m³ heaped capacity) with options for general purpose, heavy duty, and rock duty. The integrated bucket linkage system provides high breakout and crowd forces.

4. Operator Environment (The New Cab)

The cab on the DX225LC-9 is a hallmark of the series, offering a car-like interior with more space, better visibility, and lower noise levels.

Space and Visibility: The cab is wider than previous models, with a large glass area, slim A-pillars, and an optional right-side window and rearview camera (displayed on the 7-inch color monitor) for a nearly 360° view.
Climate Control: A high-performance automatic air conditioning and heating system with multiple adjustable vents ensures all-season comfort.
Seat and Ergonomics: The fully adjustable, heated air-suspension seat reduces whole-body vibration. The joystick consoles adjust independently with the seat, so armrests and controls always remain in the ideal position.
Noise and Vibration Reduction: Increased cab insulation and flexible mounts reduce internal noise levels to an extremely low 71 dBA, reducing operator fatigue over long shifts.
Multimedia and Monitoring: A 7-inch color touchscreen monitor provides real-time data on engine and hydraulic performance, fuel consumption, maintenance intervals, and camera views. Bluetooth connectivity, USB ports, and an MP3 player are integrated for convenience.

5. Simplified Maintenance and Servicing

The -9 Series is designed for daily maintenance from ground level.

Grouped Service Points: Engine oil dipstick, fuel filter, oil filter, air cleaner, and water separator are all centralized and reachable from one side of the upper structure.
Wide Access Doors: Large, hinged side doors provide excellent access to the engine, cooling pack, and hydraulic components. The engine hood can be fully opened with a gas strut assist.
Cooling System: The radiator, hydraulic oil cooler, and intercooler are mounted in a box layout for easy cleaning. A reversible cooling fan (optional or standard on some models) can blow dust out of the cooler cores without tools.
Long-Life Components: Extended-life hydraulic oil (5,000 hours), engine oil (500 hours), and fuel filters extend service intervals, reducing maintenance costs and downtime.
Greasing: The auto-greasing system (optional) automatically lubricates boom, arm, and bucket pins at timed intervals, extending pin life and saving daily labor.
Diagnostics: Integrated onboard diagnostics and a remote telematics system (DoosanCONNECT) provide remote machine monitoring, geo-fencing, usage reports, and fault code alerts to fleet managers, maximizing uptime.

Technical Specifications (Typical Configuration)

Specification	Value (Approximate)
Operating Weight	22,500 – 22,900 kg
Bucket Capacity (SAE heaped)	0.80 – 1.28 m³
Engine Model	Doosan DL06P
Net Power	128 kW (172 HP) @ 1,800 rpm
Max. Digging Depth	6,620 mm
Max. Dump Height	6,740 mm
Max. Digging Reach	9,980 mm
Breakout Force (Bucket)	16.6 ton-force (163 kN)
Breakout Force (Arm)	12.5 ton-force (122 kN)
Track Shoe Width	600 mm (standard, other options)
Overall Width	2,990 mm
Overall Length	9,540 mm
Travel Speed (Low/High)	3.1 / 5.1 km/h
Tail Swing Radius	2,840 mm
Tractive Force	19.8 ton-force (194 kN)

(Specifications may vary depending on arm length, counterweight, and regional configuration.)

Typical Applications

General Earthmoving: Site preparation, trenching, and grading.
Construction: Foundation digging, backfilling, and material handling.
Road and Bridge Work: Slope forming, ditch cleaning, and loading.
Demolition: Compatible with optional hydraulic breakers, crushers, and shears (auxiliary hydraulic piping with proportional control standard).
Utility Installation: Lifting and placing pipes and precast structures (with lifting eye and load chart).

The Doosan DX225LC-9 remains a favorite among contractors who demand a reliable, fuel-sipping machine that doesn’t compromise on power or comfort. Its blend of proven Doosan engineering, modern electronics, and operator-centric design makes it a highly productive asset across a wide range of earthmoving tasks.

Non flooded

No accident

Original product

Used Doosan 225-9 Excavator

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