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DX255LC-7 Crawler Excavator

The DX255LC-7 crawler excavator puts more power in your hands to complete the most challenging projects — offering powerful arm and bucket forces, and improved lifting capacity and stability. You can dig, load trucks and move materials with confidence.

185.1 hp @ 1,900 rpm

Rated Power, Net

57,761 lb

Operating Weight

22' 4"

Dig Depth

Key Specifications

Unmatched Comfort Focus on the challenges in front of you.Updated cab features include an optional air-suspension seat that delivers heating and cooling to provide comfort in every season. The Doosan® Smart Touch display and ergonomically designed joystick controls make it intuitive and easy to control the machine and its attachments. The unique jog shuttle switch gives you easy, precise control over all machine functions.Visibility is enhanced through a rearview camera, high-illumination LED lights and excellent sightlines through the front and side windows — all standard features. A sideview camera is available as an option.
Smart Technology Features Using the DoosanCONNECT® Telematics system, you can monitor your equipment and check on machine status from a user-friendly mobile app and website.A variety of fuel efficiency technologies optimize machine performance while reducing fuel consumption, including the exclusive D-ECOPOWER system, Smart Power Control (SPC) and Electronic Power Optimizing System (EPOS). The dependable Doosan diesel engine delivers more power output with reduced fuel consumption.The optional 360-degree all-around view monitoring (AVM) camera system gives you greater confidence when operating the machine in tight work areas. Simplified Maintenance. Proven Durability.
Main Pump: Displacement 7.02 in³/rev
Control Valve: Relief Valve Pressure (Normal) 4,694 psi
Control Valve: Relief Valve Pressure (Boost) 350 psi
Main Pump: Max. Flow Rate (each) 57.85 gal/min
Main Pump: Main Relief Pressure --


Upper Rollers: Quantity Per Side 2
Lower Rollers: Quantity Per Side 10
Track Length 15' 2"
Track Link: Track Gauge 8' 6"
Swing Performance: Max Swing Torque 71462 lbf·ft
Swing Performance: Max Swing Speed (At Efficiency) 10.01 rpm
Travel performance: Traction Force (Highest Value) 1,952,879 lbf @ 100
Travel performance: Traveling Speed - Low (XXX/) 1.99 mph
Travel performance: Traveling Speed - High (/XXX) 3.48 mph
Travel performance: Gradeability 35° @ 70 %
Max Digging Reach (Ground) 32' 9"
Max Digging Depth 22' 4"
Max Loading Height 23' 0"
Arm Digging Force - Pressure up 2,878 lbf
Bucket Digging Force - Pressure up 4,024 lbf
Arm Digging Force - Normal 2,720 lbf
Fuel Tank 110.95 gal
Hydraulic System 73.97 gal
Engine Coolant 7.4 gal
Engine Oil 7.13 gal
Hydraulic Tank 63.4 gal
Lifting Capacity over front @ Horizontal Distance - 10 ft Above Ground 18,080 lb @ 20.01 ft
Lifting Capacity over front @ Horizontal Distance - Ground Level 20,051 lb @ 20.01 ft
Lifting Capacity over front @ Horizontal Distance - 10 ft Below Ground 19,950 lb @ 20.01 ft


Rated Flywheel Power (Gross) --
Rated Horse Power (Net) 185.1 hp @ 1,900 rpm
Max. Torque (Net) 593 lbf·ft @ 1,400 rpm
Engine Emissions Tier (EPA) T4F


Operating Weight 57,761 lb
Standard Boom Length 19.36 ft
Standard Arm Length 9.84 ft
Standard Bucket Size 1.44 yd³
Shoe Width 2' 7"
Shipping Height - Hose (With Attachment) 10' 5"
Shipping Length (Without Attachment) 33' 0"
Shipping Width (Standard) 11' 1"
Overall Height Over Cab 9' 9"

DX255LC-7 Crawler Excavator

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