Used Doosan DX300LCA Excavator

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Here is a detailed English introduction to the Doosan DX300LCA excavator, a model that represents Doosan’s (now Develon) 30-tonne class crawler excavator, often configured for heavy-duty earthmoving, quarry work, or specialized applications such as long-reach or material handling.

Introduction: Doosan DX300LCA Excavator

The Doosan DX300LCA is a rugged, high-performance 30-tonne hydraulic crawler excavator designed to deliver exceptional power, fuel efficiency, and operator comfort in demanding construction, quarrying, and infrastructure projects. The "LC" designation stands for Long Crawler, indicating an extended undercarriage that provides superior stability and lifting capacity. The "A" suffix typically denotes a specific configuration or generation update (such as an advanced long-reach arrangement, material-handling setup, or a regional specification), making the DX300LCA a versatile machine tailored for applications where stability, reach, and durability are paramount.

Built by Doosan Infracore (now rebranded as Develon), the DX300LCA reflects decades of engineering expertise, combining a robust frame, a reliable diesel engine, an advanced hydraulic system, and a spacious cab designed to maximize uptime and productivity.

Key Features

1. Power and Performance

Engine: The DX300LCA is powered by a Doosan DL08 or DL06 six-cylinder, turbocharged, common-rail diesel engine that meets stringent emission standards (depending on market, Tier 3 / Stage IIIA or Tier 4 Interim). It produces approximately 197–220 net horsepower (147–164 kW) at 2,000 rpm.
High Torque at Low RPM: The engine delivers a wide torque band, ensuring powerful digging and rapid cycle times even in hard materials.
Electronic Fuel Injection: Optimized combustion improves fuel efficiency by up to 10% compared to previous models, lowering operating costs.
Selectable Power Modes: Operators can choose between Power, Standard, and Economy modes to match engine output to the job, further conserving fuel during lighter work.

2. Advanced Hydraulic System

Closed-Center, Load-Sensing Hydraulics: The system precisely matches hydraulic flow to demand, minimizing energy loss and improving fine control.
e-EPOS (Electronic Power Optimizing System): Doosan’s proprietary engine-hydraulic management system synchronizes engine rpm and pump output, delivering the exact power required for each movement. This results in smooth multi-function operation and faster cycle times.
Boom and Arm Priority: Dedicated circuits ensure that the boom or arm receives priority flow during critical digging phases, enhancing breakout force.
Heavy-Duty Main Control Valve: Built for durability and consistent performance under high-stress conditions.

3. Durability and Structure

Reinforced Undercarriage: The long crawler (LC) undercarriage features thick steel track frames, heavy-duty track links, and reinforced idlers and rollers. This design increases ground contact area, providing exceptional stability when lifting heavy loads over the side or working on uneven terrain.
Robust Upper Frame: Full box-section construction with additional reinforcement in high-stress areas ensures longevity in the harshest applications.
Boom and Arm: Manufactured from high-tensile steel with reinforced pivot points and bushings designed for extended service life. The LCA configuration often includes a longer boom and arm for extended reach or a specialized material-handling boom with a lowered knee joint.
Sealed and Lubricated Pins: Key pivot points are sealed to keep out debris and reduce daily greasing requirements.

4. Operator Environment

ROPS/FOPS Certified Cab: The spacious cab meets international safety standards and offers excellent all-around visibility, aided by a large skylight and slim A-pillars.
Ergonomic Controls: Low-effort joysticks, an adjustable suspension seat with heating (optional), and fully adjustable armrests reduce operator fatigue during long shifts.
Climate Control: A powerful automatic heating and air-conditioning system maintains a consistent temperature.
Digital Display Cluster: A full-color 7-inch LCD monitor provides real-time information on machine health, fuel consumption, maintenance intervals, and camera views.
Low Noise and Vibration: Extensive soundproofing and hydraulic damping mounts keep interior noise levels exceptionally low, around 70 dB(A).

5. Maintenance and Uptime

Easy Access: Wide-opening engine hoods, side doors, and a tilting cab platform provide ground-level access to daily checkpoints, filters, and hydraulic components.
Centralized Greasing: Grease points are grouped for convenient access, reducing service time.
Extended Service Intervals: Long-life hydraulic oil (up to 5,000 hours), engine oil, and filters reduce maintenance costs and downtime.
Reversible Cooling Fan: An optional auto-reversible fan blows debris from the radiator and oil cooler, preventing overheating in dusty environments.

Specialized Configuration: Why "LCA"?

The "A" in DX300LCA frequently indicates a Long Reach or Material Handling configuration:

Long Reach Variant: Equipped with a substantially longer boom and arm (up to 15–18 meters of reach), reinforced counterweight, and sometimes a wider gauge, this version is ideal for dredging, deep excavation, slope finishing, and large-scale demolition. The additional reach reduces the need to reposition the machine.
Material Handler (Scrap/Log Handling): Features a straight boom and a dropped-nose arm with a hydraulic cab riser system. The cab can be elevated to give the operator an unobstructed view into high-sided trucks or hoppers. This configuration is common in waste recycling, scrap yards, and forestry. It often includes solid tires (when on a wheeled base) or heavier-duty track protection.

For standard earthmoving, the base DX300LCA still benefits from the long crawler design, offering enhanced lifting capabilities and smoother travel on soft ground.

Typical Specifications (Standard Earthmoving Configuration)

Component	Specification
Operating Weight	30,000 – 31,500 kg (66,140 – 69,450 lb)
Engine Model	Doosan DL08 / DL06
Net Power	197–220 hp (147–164 kW) @ 2,000 rpm
Bucket Capacity (SAE)	1.27 – 1.75 m³ (1.66 – 2.29 yd³)
Max Digging Depth	7,300 – 7,800 mm (24’0” – 25’7”)
Max Digging Reach (Ground)	10,800 – 11,200 mm (35’5” – 36’9”)
Max Dump Height	6,900 – 7,200 mm (22’8” – 23’7”)
Bucket Breakout Force	19,800 – 21,500 kgf (43,650 – 47,400 lbf)
Arm Crowd Force	15,400 – 17,200 kgf (33,950 – 37,920 lbf)
Travel Speed (High/Low)	5.1 / 3.2 km/h (3.2 / 2.0 mph)
Tail Swing Radius	3,100 – 3,200 mm (10’2” – 10’6”)
Track Shoe Width	600 – 800 mm (24” – 32”) depending on setup
Fuel Tank Capacity	430 L (113.6 gal)

Note: Specifications vary based on configuration (long reach, mass excavation, etc.). Always refer to the exact serial number plate.

Applications

The Doosan DX300LCA excels in:

Heavy Excavation: Basement digging, trenching, and mass earthmoving.
Quarry and Mining: Loading shot rock, stripping overburden, and working as a secondary breaker.
Lifting and Pipe Laying: With its long, stable undercarriage and high lifting capacities, it is well-suited for setting pipes, manholes, and pre-cast structures.
Demolition and Dredging (Long Reach variant): Reaching high structures or deep waterways.
Waste Handling and Scrap Recycling (Material Handler variant): Sorting, loading, and moving bulk materials.

Conclusion

The Doosan DX300LCA excavator is a versatile workhorse that blends raw digging force with refined controllability and fuel economy. Its durable long-crawler undercarriage and adaptable configurations make it a preferred choice for contractors who demand reliability on the toughest sites. Whether fitted with a standard earthmoving front, a long-reach boom, or a material-handling cab riser, the DX300LCA delivers consistent, high-productivity performance day after day.

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Used Doosan DX300LCA Excavator

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