Develon DX350LC-7

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Power, Precision and Productivity
The new DX350LC-7 large hydraulic crawler excavator combines powerful arm and bucket forces, improved lifting capabilities and superior cycle times to help you do more in less time. The Fine Swing function provides greater control and accuracy in certain lifting applications. Or push the one-touch power boost button to momentarily boost hydraulic power and break into the toughest ground. With fast cycle times and more swing torque, this crawler excavator delivers the power you need for whatever the challenge ahead.


Operator Comfort Is a Priority
This -7 Series hydraulic crawler excavator model includes features for operator comfort and easy operation. The Doosan® Smart Touch screen displays all important settings from one, easy-to-read screen. The deluxe, gray faux-leather air-suspension seat resists stains and delivers heating or cooling for a more comfortable temperature throughout the seasons. The optional 360-degree all-around view (AVM) camera system offers a full view of the machine’s surroundings for greater confidence when operating or positioning the machine in tight work areas. Eight powerful LED lights are standard for a clear view of the attachment and the job.


Focused on Fuel Efficiency
The DX350LC-7 features a Doosan diesel engine optimized to provide more power output with reduced fuel consumption. To further save fuel, a standard auto-idle feature idles your engine automatically when machine functions are not used for a few seconds. The D-ECO Power system improves productivity and fuel savings by providing the precise amount of hydraulic oil required to perform a task. And Smart Power Control (SPC) maximizes machine efficiency without sacrificing productivity. Four selectable power modes allow you to manage the balance of fuel consumption and machine power to your liking, based on your working conditions.


Monitor and Maintain Your Crawler Excavator
DoosanCONNECT® Telematics is standard on the DX350LC-7, making it easy to remotely monitor its location, health and productivity. You’ll have ground-level access to all filters and easy access to regular inspection points. Access panels open from the top, bottom and sides of the excavator. Centralized grease banks on the arm and base of the boom make daily maintenance more convenient. When it’s time to refuel, an available filler pump helps you quickly get back to the job. Pick up genuine Doosan hydraulic crawler excavator parts from your dealer, who is supported by two regional warehouses located in North America.


• T4 Emission Compliant (no DPF)
• 22' 4" (6500 mm) Boom, 10' 6" (3200 mm) Arm
• 31.5" (800 mm) Shoe, Rollers (2 upper/9 lower)
• 4 Power Modes/4 Work Modes
• DoosanConnect® Telematics: Free Cellular

Fully Enclosed Cabin, 8" Touch-Enabled Monitor,
Smart Key With Passcode, One-Way Aux. Hydraulics
(With Two-Way Piping Installed), Heated Seat

Around View Monitor/Camera, Two-Way Aux.
Hydraulics, Rotate Circuit Piping, Cab Guarding,
Additional Work Lamps, Rotating Beacon, Straight
Travel, Auto Greasing System

Hydraulic Quick Coupler, HD Bucket, Ditching
Bucket, SD Bucket, Main Pin Thumb, Pro-Link Thumb


MODEL Doosan DX350LC-7
Rated Flywheel Power (Gross) 285.6 hp @ 1,800 rpm
Rated Horse Power (Net) 280.3 hp @ 1,800 rpm
Max. Torque (Net) 940 lbf·ft @ 1,400 rpm
Engine Emissions Tier (EPA) T4F
Hydraulic System  
Main Pump: Displacement 12.2 in³/rev
Control Valve: Relief Valve Pressure (Normal) 5,078 psi
Control Valve: Relief Valve Pressure (Boost) 5,362 psi
Main Pump: Max. Flow Rate (each) 92.46 gal/min
Main Pump: Main Relief Pressure 5,076 psi
Upper Rollers: Quantity Per Side 2
Lower Rollers: Quantity Per Side 9
Track Length 16' 3"
Track Link: Track Gauge --
Swing Mechanism  
Swing Performance: Max Swing Torque --
Swing Performance: Max Swing Speed (At Efficiency) 9.3 rpm
Travel System/Drive Mechanism  
Travel performance: Traction Force (Highest Value) --
Travel performance: Traveling Speed - Low (XXX/) 2.11 mph
Travel performance: Traveling Speed - High (/XXX) 3.48 mph
Travel performance: Gradeability 35° @ 70%
Operating Weight  83,335 lb
Standard Boom Length 21.33 ft
Standard Arm Length 10.5 ft
Standard Bucket Size 1.95 yd³ 
Shoe Width  2' 7"
Shipping Height - Hose (With Attachment) --
Shipping Length (Without Attachment) 37' 1"
Shipping Width (Standard) 11' 5"
Overall Height Over Cab --
Working Range  
Max Digging Reach (Ground) 35' 11"
Max Digging Depth 24' 8"
Max Loading Height 23' 6"
Digging Force (ISO)  
Arm Digging Force - Pressure up 41,590 lbf
Bucket Digging Force - Pressure up 57,101 lbf
Arm Digging Force - Normal 33,272 lbf
Refill Capacities  
Fuel Tank 158.5 gal
Hydraulic System 100.39 gal
Engine Coolant

14.82 gal

Engine Oil 11.1 gal
Hydraulic Tank 64.19 gal
Noise Level: Guaranteed Sound Power Level 105 dBA
Noise Level: Operator 71 dBA
Lift Capacity  
Lifting Capacity over front @ Horizontal Distance - 10 ft Above Ground 25,948 lb @ 19.68 ft
Lifting Capacity over front @ Horizontal Distance - Ground Level 30,909 lb @ 19.68 ft
Lifting Capacity over front @ Horizontal Distance - 10 ft Below Ground 29,344 lb @ 19.68 ft


WARNING: This product can expose you to chemicals including engine exhaust (including diesel engine exhaust when equipped), lead and lead compounds, mineral oils, soots, phthalates, and carbon monoxide which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.