Doosan DH220LC-7 Excavator - Equipment Original Specifications

[MikePhua]

The Doosan DH220LC-7 is a formidable excavator known for its robust performance and efficiency in various industries such as construction, mining, and infrastructure development. With its reliable engine, versatile hydraulics, and powerful digging capacity, the DH220LC-7 is a machine designed to handle tough tasks with ease.
Basic Information

• Brand: Doosan
  
• Model: DH220LC-7
  
• Year of Manufacture: 2010
  
• Operating Hours: 8000 hours
  
• Location: Xuchang, Henan, China
  

Specifications and Key Features
The DH220LC-7 is a mid-sized hydraulic crawler excavator that offers a combination of power, efficiency, and stability. This model has a weight of approximately 21 tons, making it ideal for medium-to-heavy duty tasks. Below is a breakdown of its primary specifications:

• Operating Weight: 21,400 kg
  
• Bucket Capacity: 0.5-1.18 m³
  
• Arm Length: 5,700 mm
  
• Boom Length: 2,900 mm
  
• Engine Model: Doosan DB58TI
  
• Rated Power: 108 kW at 2000 rpm
  
• Cooling System: Air-cooled
  
• Track Length: 4,440 mm
  
• Track Gauge: 2,390 mm
  
• Track Width: 600 mm
  

This excavator, manufactured in Shandong, operates on traditional power systems with a strong focus on hydraulic efficiency and overall durability.
Engine Performance and Hydraulics
The Doosan DH220LC-7 is powered by the Doosan DB58TI engine, a reliable diesel engine designed for high performance in demanding conditions. It provides an output of 108 kW at 2,000 rpm, which is ideal for tasks that require consistent, steady power delivery.
Key hydraulic performance stats are as follows:

• Swing Speed: 12.1 rpm
  
• Bucket Digging Force: 136.2–144.1 kN
  
• Arm Digging Force: 100–104.9 kN
  
• Travel Speed: 3.1–5.4 km/h
  

The high swing speed and strong digging forces make this model ideal for a variety of digging, lifting, and material handling operations.
Dimensions and Operational Reach
The DH220LC-7 features dimensions that ensure stability and optimal reach for excavation tasks:

• Transport Length: 9,550 mm
  
• Transport Width: 2,990 mm
  
• Transport Height: 3,030 mm
  
• Cab Height: 3,030 mm
  
• Undercarriage Ground Clearance: 480 mm
  
• Counterweight Ground Clearance: 1,115 mm
  
• Rear Swing Radius: 2,750 mm
  

The spacious undercarriage and high clearance ensure that the machine can operate in both soft and rough terrains without issue, offering both stability and maneuverability.
The machine’s digging reach is another of its standout features. Below are the maximum operational capabilities:

• Maximum Digging Radius: 9,970 mm
  
• Maximum Digging Depth: 6,660 mm
  
• Maximum Digging Height: 9,660 mm
  
• Maximum Dump Height: 6,810 mm
  
• Maximum Vertical Digging Depth: 5,600 mm
  

These values illustrate the impressive depth and reach the DH220LC-7 can achieve, making it a versatile tool for projects that require both shallow and deep excavations.
Hydraulic System and Performance
Hydraulics play a critical role in the performance of any excavator, and the DH220LC-7’s system is no exception. Equipped with a variable displacement axial piston pump, this model offers excellent power and control. The hydraulic system supports a high level of precision in handling complex tasks such as trenching and digging in tight spaces.
Key hydraulic system parameters include:

• Main Pump Maximum Flow: 439 L/min
  
• Swing Hydraulic Circuit Pressure: 28.9 MPa
  
• Travel Hydraulic Circuit Pressure: 37.3 MPa
  
• Control Hydraulic Circuit Pressure: 3.2 MPa (Pilot Oil Circuit)
  

The high-pressure hydraulic system provides smooth operation and enhanced lifting capabilities, which is crucial when dealing with heavy loads or tough digging conditions.
Fuel Efficiency and Maintenance
Fuel efficiency is a major factor when operating large machinery. The DH220LC-7 is designed with this in mind, offering a fuel tank capacity of 400 liters and a hydraulic oil tank capacity of 135 liters. The engine oil replacement volume is 23.1 liters, ensuring long operational periods before maintenance is needed. With its large fuel tank, the DH220LC-7 can cover significant work areas without the need for frequent refueling, making it a reliable partner for long working shifts.
Additionally, the cooling liquid capacity is 20.4 liters, which ensures the engine remains at optimal temperatures during extended operations in high-demand environments.
Conclusion: A Reliable Workhorse for Challenging Tasks
The Doosan DH220LC-7 is a robust and efficient excavator that is well-suited for various construction, mining, and infrastructure tasks. With its strong engine, powerful hydraulic system, and impressive reach, this model is built to handle the most demanding jobs. Whether you're digging deep foundations, moving large amounts of material, or performing precise trenching operations, the DH220LC-7 provides the power and stability needed to get the job done right.
For companies looking to invest in reliable, high-performance machinery, the DH220LC-7 continues to prove itself as an excellent choice.