Used Doosan DX225-9C Excavator

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Detailed Introduction of DOOSAN DX225-9C Crawler Excavator

The Doosan DX225-9C is a 22~23 ton class medium-sized crawler excavator developed by Doosan Infracore (now part of HD Hyundai Infracore) for global emerging markets (including Asia, Latin America, Middle East and Africa). As a core model of the Doosan -9C product line, it balances high operation efficiency, low fuel consumption, outstanding durability and operator comfort, and is widely recognized for its adaptability to harsh working conditions and low total ownership cost.

1. Core Powertrain & Hydraulic System

Power Unit

It is equipped with the self-developed Doosan DL06 6-cylinder turbocharged intercooled diesel engine, which complies with EU Tier 3 / China Stage Ⅲ emission standards:

Rated power: 110 kW at 1900 rpm
Maximum torque: 605 N·m at 1300 rpm, featuring low-speed high-torque output, strong climbing and heavy-load digging capacity, and low idling fuel consumption.
Built-in fuel pre-filter with water separator and alarm function, which effectively avoids engine damage caused by low-quality fuel, and adapts to complex oil supply environments in construction sites.

Hydraulic System

Adopts Doosan's proprietary EPOS (Electronic Power Optimizing System) + negative flow control technology:

Dual independent variable piston pumps, with boom/arm regeneration function, which reduces hydraulic loss during compound actions, improves operation speed by 10% compared with the previous generation, and reduces comprehensive fuel consumption by 5~8%.
4 optional operation modes:
- P (Power) mode: Full power output, for heavy-duty rock digging, high-intensity loading
- S (Standard) mode: Balances efficiency and fuel consumption, for daily earthwork operations
- E (Economy) mode: Lowest fuel consumption, for light-load finishing work
- Attachment mode: Adjustable hydraulic flow, suitable for breakers, grapples, rippers and other auxiliary tools
Auto-idle function: Automatically reduces to low idle speed when no operation is detected for more than 5 seconds, further reduces fuel waste.

2. Operation Performance

Parameter	Value
Standard bucket capacity	1.05~1.28 m³ (optional rock bucket, sand bucket, etc.)
Maximum digging depth	6720 mm
Maximum digging radius	9860 mm
Maximum dumping height	6910 mm
Swing speed	11.5 rpm
Travel speed	3.1 km/h (low) / 5.5 km/h (high)
Gradeability	70% (35°)
Ground pressure	47 kPa

The low ground pressure design ensures stable operation on soft soil, muddy and marshy construction sites, and avoids sinking.

3. Operator Comfort & Safety

The cab is certified by ROPS (Roll-over Protective Structure) and FOPS (Falling Object Protective Structure), which fully guarantees the safety of operators in case of rollover or falling objects.
Noise reduction design: The internal operating noise is only 72 dB(A), which is 3~5 dB lower than the industry average.
Ergonomic configuration: Fully adjustable air suspension seat with lumbar support, light-weight hydraulic pilot control lever, 5.7-inch color LCD monitoring screen that displays real-time fuel consumption, water temperature, fault code and other operating data. Optional rearview camera eliminates blind spots when reversing.
High-power automatic climate control system with multi-position air outlets, which quickly adjusts the cab temperature in extreme hot or cold environments.
Safety interlock function: When the operating armrest is lifted, the hydraulic system is automatically locked to avoid accidental operation. It is also equipped with travel alarm, reverse alarm, emergency steering and emergency stop functions.

4. Durability & Maintenance Convenience

Structural parts: The boom, arm and undercarriage are made of high-strength wear-resistant steel, and the welding positions are subjected to stress relief treatment. The pins of moving parts are hard chromium plated, which extends the service life by more than 20% under harsh working conditions. The track shoes, supporting rollers and idlers are made of high manganese steel, which is resistant to impact and wear.
Easy maintenance: All maintenance points (engine oil filter, fuel filter, hydraulic oil filter, air filter) are accessible from the ground, which reduces the daily maintenance time by 30% compared with similar products.
Long maintenance cycle: Engine oil replacement cycle is 500 operating hours, hydraulic oil replacement cycle is 5000 operating hours, which greatly reduces the later maintenance cost.
Optional Doosan Connect remote management system: Supports real-time positioning, operating hour statistics, fuel consumption monitoring and fault early warning, which is convenient for fleet management.

5. Application Scenarios

The DX225-9C is suitable for a wide range of construction scenarios, including municipal engineering, road construction, housing demolition, earthwork excavation, quarry mining, material loading and unloading, and farmland water conservancy projects. It can be adapted to more diversified working requirements with different auxiliary tools.

Non flooded

No accident

Original product

Used Doosan DX225-9C Excavator

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