Used Doosan DX300LC-9C Excavator

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📋 Overview

The Doosan DX300LC-9C is a 30-ton class crawler excavator belonging to Doosan Infracore's Generation 9C (L-9C) series, launched around 2019–2020 as an upgrade to the previous L-9 series. It is designed for heavy-duty construction, mining, quarrying, and civil engineering applications. The "9C" designation indicates the 9th generation, C-variant (enhanced/updated) platform.

🔧 Engine

Parameter	Specification
Engine Model	Doosan DV11K-T (Stage V / Tier 4 Final)
Type	6-cylinder, turbocharged, intercooled diesel
Displacement	11.05 liters
Rated Power	~221 hp (165 kW) @ 1,900 rpm
Max Torque	~850 Nm @ 1,400 rpm
Emission Standard	Stage V (EU) / Tier 4 Final (EPA)
Aftertreatment	DPF + SCR (DEF/AdBlue system)

✅ The DV11K-T engine delivers excellent fuel efficiency (~8–10% improvement over the L-9 series) while meeting the strictest emission regulations.

⚖️ Operating Weight & Dimensions

Parameter	Specification
Operating Weight	~29,500 – 30,800 kg (~30 tons)
Transport Length	~10,280 mm
Transport Width	~3,190 mm
Transport Height	~3,230 mm
Ground Clearance	~470 mm
Track Width	600 mm (standard) / 700 mm (wide)
Track Length on Ground	~4,000 mm
Tail Swing Radius	~3,180 mm

🪣 Bucket & Work Range

Parameter	Specification
Standard Bucket Capacity	1.2 – 1.5 m³ (varies by config)
Max Digging Depth	~9,800 – 10,000 mm
Max Reach (Ground Level)	~10,200 – 10,500 mm
Max Digging Height	~10,500 mm
Max Dump Height	~7,200 – 7,400 mm
Max Digging Radius	~10,000 mm
Max Vertical Wall Dig Depth	~6,700 mm
Max Digging Force (Boom)	~195 – 200 kN
Max Digging Force (Arm)	~135 – 140 kN

🛢️ Hydraulic System

Parameter	Specification
Pump Type	Variable displacement axial piston pump (2 pumps)
Total Flow Rate	~2 × 280 L/min (560 L/min total)
Operating Pressure	350 bar (5,075 psi)
Swing System	Hydraulic motor with auto-deceleration
Swing Speed	~8.5 rpm
Travel Speed	~5.0 km/h (high) / ~3.2 km/h (low)

🏠 Cab & Operator Comfort (Key Upgrade of 9C)

The 9C series introduced a completely redesigned cab, which is one of its biggest selling points:

Feature	Detail
Cab Type	ROPS/FOPS certified, fully enclosed, pressurized
Noise Level	~67 dB(A) (significantly quieter than L-9)
Air Conditioning	Auto climate control with dust/pollen filter
Seat	Air-suspended, fully adjustable, heated (optional)
Display	7-inch full-color LCD monitor with rearview camera
Controls	Electronic thumb-wheel levers (optional joystick)
Armrests	Adjustable, with integrated controls
Storage	Enhanced storage compartments
Visibility	Improved all-round visibility, larger windows
Vibration	Significantly reduced cab vibration levels

🧠 Smart Technology — Doosan DLI (Doosan Link Intelligence)

The DX300LC-9C comes equipped with Doosan's telematics and connectivity platform:

Feature	Function
📡 Remote Monitoring	Real-time machine location, status, hours
📊 Fuel Management	Track fuel consumption, identify inefficiencies
🔧 Fault Diagnostics	Remote error code reading & troubleshooting
📈 Productivity Tracking	Dig time, idle time, work/travel ratio
🚨 Maintenance Alerts	Predictive maintenance reminders
📱 App/Web Portal	Access data from smartphone or PC
🔄 OTA Updates	Software updates over the air

⚡ Key Features & Technologies

Feature	Description
🟢 Eco Mode	Auto-adjusts engine RPM to match load → saves 5–10% fuel
🟢 Auto Idle Shutdown	Engine auto-stops after 5 min idle → reduces fuel waste
🟢 Auto Swing Stop	Reduces swing deceleration time → faster cycle times
🟢 Boom Lowering Control	Prevents boom drop during transport
🟢 Work Mode Selection	P (Power) / E (Eco) / S (Smart) modes
🟢 Weigh System	Optional onboard weighing for accurate loading
🟢 Auto Greasing	Centralized automatic lubrication system
🟢 LED Work Lights	Improved nighttime visibility
🟢 Quick Coupler Ready	Hydraulic quick coupler available for attachment change
🟢 Blade & Ripper Options	Dozer blade and single-shank ripper available

🔄 Comparison: DX300LC-9C vs DX300LC-9 (L-9 Series)

Feature	DX300LC-9 (Old)	DX300LC-9C (New)
Engine	DV11K (Stage IV)	DV11K-T (Stage V)
Power	~217 hp	~221 hp
Fuel Efficiency	Baseline	+5–10% improvement
Cab Noise	~70 dB(A)	~67 dB(A) ✅
Display	5-inch monochrome	7-inch color LCD ✅
DLI	Basic	Full DLI connectivity ✅
Eco Mode	❌	✅ Yes
Auto Idle	❌	✅ Yes
Cab Comfort	Good	Significantly improved ✅

🏭 Typical Applications

Application	Suitability
🏗️ General Earthmoving	⭐⭐⭐⭐⭐
⛰️ Mining & Quarrying	⭐⭐⭐⭐⭐
🛣️ Road Construction	⭐⭐⭐⭐⭐
🏢 Demolition	⭐⭐⭐⭐
🪨 Heavy Material Handling	⭐⭐⭐⭐⭐
🌊 Dredging	⭐⭐⭐⭐ (with long reach)
🌲 Forestry	⭐⭐⭐ (with grapple)

📊 Summary — Why Choose the DX300LC-9C?

✅ Strength	Detail
💪 Powerful	221 hp, 30-ton class — handles the toughest jobs
&Fuel Efficient**	Eco mode + auto idle = lower operating costs
🪑 Operator Comfort	Best-in-class cab with low noise & vibration
🧠 Smart & Connected	DLI telematics for fleet management
🌍 Emission Compliant	Stage V / Tier 4 Final — future-proof
🔧 Low Maintenance	Auto greasing, easy service access
💰 Strong Resale Value	Doosan brand reliability + demand

📌 Quick Spec Sheet

Spec	Value
Model	DX300LC-9C
Class	30 Ton
Engine	Doosan DV11K-T, 11.05L, 221 hp
Weight	~30,500 kg
Bucket	1.2–1.5 m³
Max Dig Depth	~10,000 mm
Hydraulic Flow	560 L/min
Emission	Stage V / Tier 4 Final
Launch Year	~2019–2020

📌 Note: Exact specifications may vary slightly by regional market (North America, Europe, Asia, Middle East, etc.) and configuration (standard boom, long reach, demolition, etc.). Always refer to your local Doosan dealer for precise data.

Would you like me to compare it with competitors like the CAT 330, Komatsu PC300-11, or Volvo EC300E? 🚜