Used Doosan 225-7 Excavator

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Doosan DH225LC-7 Crawler Excavator Detailed Introduction

The Doosan DH225LC-7 (commonly referred to as Doosan 225-7) is a classic 22-ton class heavy-duty crawler excavator developed and produced by Doosan Infracore, the South Korea-headquartered global leading construction equipment manufacturer. As a core best-selling model in Doosan’s 7-series excavator lineup, it is widely recognized for its high reliability, strong environmental adaptability, low operating cost and easy maintenance, and is widely used in construction sites around the world.

Core Specifications

Parameter	Specific Data
Operating Weight	21,800 kg – 22,500 kg (varies with bucket, counterweight and attachment configuration)
Engine	Doosan DB58TIS 4-cylinder, water-cooled, turbocharged intercooled diesel engine; rated power 110 kW (148 HP) at 2000 rpm, maximum torque 590 N·m at 1400 rpm, compliant with EU Stage II / US EPA Tier 2 emission standards
Hydraulic System	Load-sensing negative flow control system, main pump flow 2×214 L/min, maximum hydraulic pressure 34.3 MPa
Working Device	Standard bucket capacity 1.0 m³ (optional 0.92–1.2 m³ buckets for different scenarios); maximum digging depth 6620 mm, maximum digging reach 9850 mm, maximum digging height 9610 mm, maximum dumping height 6840 mm; bucket breakout force 143 kN, arm digging force 98 kN
Travel Performance	Travel speed 3.2 km/h (low gear) / 5.5 km/h (high gear), maximum gradeability 35° (70% slope), track gauge 2600 mm, track ground length 3750 mm

Key Performance Advantages

1. Balanced Power and Fuel Efficiency

The optimized matching of the DB58TIS engine and high-precision hydraulic system reduces unnecessary power loss, with a fuel consumption of only 13–18 L/h under conventional working conditions, 5–8% lower than competing models of the same tonnage. It is equipped with three adjustable working modes:

Power (P) mode: Full power output for heavy-duty operations such as rock excavation and heavy loading
Standard (S) mode: Balanced power and fuel consumption for daily earthwork
Economy (E) mode: Low fuel consumption for light operations such as site leveling

2. High Structural Strength and Durability

The boom, arm and chassis are welded with high-strength wear-resistant steel plates, and the key stress parts are reinforced with thickened plates, which improves the impact resistance and deformation resistance by 15% compared with the previous generation. The undercarriage adopts sealed and lubricated track chains, and the service life can reach more than 10,000 hours under normal use.

3. Excellent Operation Stability

The extended crawler chassis and optimized 4.2-ton counterweight design ensure stable operation even under maximum digging reach or heavy load lifting conditions, and the large-displacement travel motor provides sufficient traction for walking on muddy, rocky and other complex sites.

Operator Comfort and Safety

The cab is ROPS/FOPS certified, which can effectively protect the safety of the operator in the event of rollover or falling object impact
Ergonomic design: Fully adjustable shock-absorbing seat, low-force control joystick, and the operating noise in the cab is controlled below 75dB(A)
360° panoramic vision with large-area tinted glass, equipped with high-efficiency heating and air conditioning system to adapt to extreme temperature environments
The central instrument panel displays real-time working parameters such as fuel level, water temperature, oil pressure and fault codes, which is convenient for operators to monitor the equipment status.

Maintenance and Application Scenarios

Maintenance Advantage

Doosan has a complete global after-sales network, and the spare parts of DH225LC-7 are widely supplied and low in cost, which greatly reduces the later maintenance cost. All routine maintenance points (oil filter, fuel filter, air filter, hydraulic oil filling port, etc.) are arranged in easy-to-access positions, and daily maintenance can be completed in a short time.

Main Applications

It is suitable for a wide range of operation scenarios:

Earthwork excavation, foundation construction and site leveling in civil construction projects
Roadbed construction, slope trimming and material transfer in highway and railway projects
Ore loading and stripping work in small and medium-sized mines
River dredging, embankment construction and other water conservancy projects
Municipal engineering, old building demolition, landscaping and other urban operations

Note

The DH225LC-7 was mainly produced from 2005 to 2015, and was later replaced by upgraded 9-series and DX-series models. However, due to its outstanding cost performance, a large number of second-hand Doosan 225-7 excavators are still in active service in the global construction market, and are highly recognized by small and medium-sized engineering contractors.

Non flooded

No accident

Original product

Used Doosan 225-7 Excavator

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