Used Doosan DX300LC-9C Excavator

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Here is a detailed introduction to the DOOSAN DX300LC-9C excavator in English, covering its key features, performance, comfort, durability, and specifications.

DOOSAN DX300LC-9C Crawler Excavator: Power, Precision, and Productivity Redefined

The DOOSAN DX300LC-9C is a 30-tonne class crawler excavator engineered to deliver exceptional performance in heavy construction, quarrying, mining, and infrastructure projects. As part of Doosan’s respected -9C Series, this machine combines a robust, fuel-efficient engine, an advanced hydraulic system, and a reinforced structure to maximize uptime and productivity while keeping operating costs low. The DX300LC-9C stands out for its impressive digging force, smooth controllability, and operator-first design philosophy.

1. Powerful and Efficient Engine

At the heart of the DX300LC-9C is the Doosan DL06P 6-cylinder, turbocharged, water-cooled diesel engine. This powerplant delivers a net output of 157 kW (210 HP) at 2,000 rpm, providing abundant power for the most demanding tasks. The engine meets stringent emission regulations (equivalent to Tier 3 / Stage IIIA) through advanced combustion technology without the need for a DPF, reducing complexity and maintenance.

Key engine features include:

Electronic Fuel Injection: High-pressure common-rail system ensures optimal fuel atomization, resulting in complete combustion, improved fuel economy, and reduced emissions.
Smart Power Control (SPC): The engine and hydraulic pump are intelligently matched to load demands. SPC optimizes torque and RPMs in real time, significantly reducing fuel consumption during light-to-medium work without sacrificing breakout power.
Multiple Power Modes: Operators can select from Power, Standard, and Economy modes, plus a customizable Work mode. The D-Eco power mode automatically adjusts pump flow and engine speed to maximize fuel savings while maintaining productivity.
Cooling System: A redesigned, wide-core radiator and intercooler with hydraulically driven, variable-speed cooling fan reduces noise, prevents clogging, and keeps the engine at ideal operating temperatures even in high-ambient conditions.

2. Advanced Hydraulic System

The DX300LC-9C utilizes an advanced, closed-centre hydraulic system with variable-displacement axial piston pumps and intelligent controls to deliver precise, responsive operation.

Electronic Power Optimizing System (e-EPOS): This proprietary Doosan system enables seamless communication between the engine and hydraulics. It provides flow-on-demand, reducing wasted energy and heat generation.
Fine Swing Control: An electronically controlled swing motor ensures smooth acceleration and deceleration, reducing shock loads and improving operator comfort when truck loading or precision trenching.
Boom and Arm Flow Regeneration: Regenerative circuits on the boom and arm speed up working cycles by reusing return oil flow, which also contributes to fuel savings.
Lifting Mode: A dedicated fine-control mode for lifting operations that adjusts hydraulic flow for maximum safety and precision when handling heavy or suspended loads.
Auxiliary Hydraulics: Standard two-way auxiliary piping and optional high-flow circuits make the machine ready for a wide variety of attachments, including breakers, shears, and grapples. Flow and pressure are easily set through the in-cab monitor.

3. Rugged Durability and Structural Strength

Built for extreme working conditions, the DX300LC-9C features a heavily reinforced front-end attachment and undercarriage to deliver class-leading durability and a long service life.

Strengthened Boom and Arm: The box-section boom and arm are fabricated from high-tensile steel with thick internal baffles and fully welded castings at stress points. The arm is available in multiple lengths (standard 6.25 m) to suit various applications, with reinforcement plates in high-wear areas.
X-Chassis Undercarriage: The robust X-shaped lower frame distributes stress evenly and resists torsional loads. Heavy-duty track links, sealed and lubricated track chains, and reinforced idlers and sprockets are standard.
Superior Swing Durability: A large-diameter, single-row ball-bearing swing circle with induction-hardened internal gear ensures precise motion and extended life. The swing motor is protected by an integrated relief valve.
Full Guarding Options: Heavy-duty belly plates, travel motor guards, and swivel guards are available as standard or optional equipment, fully protecting the machine when working in rocky or demolition environments.

4. Superior Operator Environment

The DX300LC-9C cab sets a benchmark for comfort and visibility, reducing operator fatigue and enhancing safety during long shifts.

ROPS/FOPS Certified Cab: The pressurised, vibration-isolated cab is fitted with Roll-Over and Falling-Object Protective Structures as standard.
All-Round Visibility: A large glass area, slim A-pillars, an expansive skylight with sunshade, and an optional rearview camera with a 7-inch colour monitor provide outstanding visibility to the work area and surroundings.
Ergonomic Controls: Low-effort pilot joysticks with proportional auxiliary controls, an adjustable air-suspension heated seat, and ample foot and leg room ensure a fatigue-free work environment.
Automatic Climate Control: A high-capacity HVAC system with multiple adjustable vents and defrosting functions maintains a comfortable temperature year-round.
Advanced Monitor: The central 7-inch colour touchscreen display provides real-time machine data, fuel consumption history, camera feeds, attachment settings, and maintenance alerts. DoosanCONNECT telematics is integrated for remote fleet management.

5. Easy Maintenance and Serviceability

Minimising downtime is a key design priority. The DX300LC-9C is engineered for quick, convenient daily service checks and extended service intervals.

Ground-Level Access: All daily check points — engine oil, coolant, fuel pre-filter, and water separator — are grouped and accessible from the ground or a wide slip-resistant platform.
Tilting Cab: The entire cab tilts forward hydraulically, providing wide-open access to the main hydraulic pumps, control valves, and swivel joint, drastically reducing repair times.
Centralized Greasing: A factory-fitted auto-greasing system (optional) automatically lubricates boom, arm, and bucket pins, extending component life and reducing daily manual work.
Long-Life Filters: High-capacity air, oil, and fuel filters achieve extended change intervals (engine oil up to 500 hours, hydraulic oil up to 2,000 hours with proper sampling), lowering total cost of ownership.
Reversible Cooling Fan: The hydraulically driven fan can be programmed to reverse at set intervals or manually activated from the cab, blowing out accumulated debris from the radiator, oil cooler, and intercooler without stopping work.

DOOSAN DX300LC-9C – Technical Specifications

Specification	Value
Operating Weight	Approx. 29,800 – 30,500 kg (65,700 – 67,200 lb)
Bucket Capacity (Heaped)	1.27 – 1.75 m³ (1.66 – 2.29 yd³)
Engine Model	Doosan DL06P
Engine Power (Net)	157 kW (210 HP) @ 2,000 rpm
Max Torque	94 kgf·m (680 lb·ft) @ 1,400 rpm
Travel Speed (Low / High)	3.3 / 5.7 km/h (2.1 / 3.5 mph)
Max Digging Depth	7,310 mm (23' 12")
Max Digging Reach	10,735 mm (35' 3")
Max Dumping Height	6,940 mm (22' 9")
Bucket Breakout Force (ISO)	20,800 kgf (45,860 lbf)
Arm Digging Force (Standard)	16,500 kgf (36,380 lbf)
Swing Speed	10.5 rpm
Tail Swing Radius	3,200 mm (10' 6")
Overall Length (Transport)	10,475 mm (34' 4")
Fuel Tank Capacity	400 L (105.7 gal)

Specifications may vary depending on configuration, arm length, and bucket selection.

Conclusion

The DOOSAN DX300LC-9C is a highly capable, durable, and fuel-conscious excavator built for contractors who demand reliability and low operating costs. Its blend of powerful hydraulics, a comfortable work environment, and simple maintenance makes it an ideal choice for mass excavation, rock loading, and large-scale utility work. With integrated telematics and a rugged design, the DX300LC-9C is a true production tool ready to excel in the toughest conditions.

Non flooded

No accident

Original product

Used Doosan DX300LC-9C Excavator

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