DX350LC-7 Doosan excavator specs & Dimensions (2021 - 2023)

Meet the New Generation of Doosan Machines

Lift your business to the next level with the DX350LC-7 Doosan excavator. Exceptionally powerful, yet environmentally friendly, the DX350LC-7 excavator features extraordinary fuel efficiency.

Expert Fingertip Control

The new multi-function 8" touchscreen displays all useful information in a visual and intuitive format. At a glance, you can check the machine’s status and settings to achieve optimal efficiency. Doosan’s unique jog shuttle switch gives you easy and precise control over all machine functions. Highly sensitive and low-effort joysticks enable you to work safely, smoothly and confidently. The proportional thumb switches on the joysticks can be mounted horizontally or vertically, as the operator prefers, for optimal control of hydraulic attachments.

Engine

Exceptionally powerful – with high torque at low revs – the new Doosan engine combines reliability and low environmental impact. This Stage V compliant 6 cylinder engine delivers 213 kW at 1800 rpm.

Excellent fuel efficiency

To save fuel, the Smart Power Control (SPC) system optimizes the balance between the pump output and the diesel engine.

Safety

360° camera system, large side mirrors, powerful halogen or LED worklights, anti-slip steps and platforms. Guard rails on upper structure, ultrasonic obstruction indicator (option), travel alarm: your safety is our priority. Roll Over Protective Structure (ROPS) Boom and arm cylinder safety valves Overload warning device Large guard rails on upper structure and steps Rotating beacon Around View Camera 360° Punched metal anti-slip plates Hydraulic safety lock lever Safety glass.

Easy maintenance

Easy access to all compartments. Radiator and oil cooler separated for better cooling and easier access. Maintenance data directly available from control panel.

Maintenance Access Made Simple

Large guard rails are installed along with anti-slip steps and plates, for safer, easier access to the whole upper structure. The air conditioning filter is placed on the side of the cab for easy access. The filter’s cover can be locked and opened with the starter key. A battery cut-off switch makes it easy to disconnect the battery for long-term storage. The hour meter display can be easily checked from ground level. Shut-off valves have been fitted on the pre-filter piping line and fuel tank drain piping to make servicing easier and prevent pollution from leakage. Engine parts can be easily reached via the top and side panels. The radiator and oil cooler have been separated, making access for cleaning easier. For extra accessibility and servicing convenience, all filters (engine oil filter, fuel pre-filters, fuel filters and pilot filter) are located in the pump compartment. An electric transfer pump for initial priming of fuel filters is featured as standard.

Centralised Greasing Points

To make maintenance easier, the greasing points have been centralised. An automatic lubrication system is available as an option.

Hydraulic system

Boom and arm flow regeneration, swing anti-rebound valves, spare ports (valve), flow and pressure adjustment of hydraulics lines controlled from the cab, one-touch power boost function, Smart Power Control (SPC), breaker piping, cylinder cushioning & contamination seals, and setting of auxiliary hydraulic flow and pressure from the display panel.

Undercarriage durability

Forged steel and deep-hardened top rollers – oil-lubricated rollers – heat-treated sprocket – deep-hardened, heat-treated, grease lubricated & longer life track chains.

Designed for long term, all-round, heavy-duty performance

Designed using finite element analysis and 3D computer simulation, the X shaped undercarriage ensures optimum structural integrity and durability.

Undercarriage

Extremely robust construction throughout - made of high-quality, durable materials, with all welded structures designed to limit stresses. Track rollers lubricated for life. Idlers and sprockets fitted with floating seals. Track shoes made of induction-hardened alloy with triple grouser. Heat-treated connecting pins. Hydraulic track adjuster with shock-absorbing tension mechanism. X-frame with hydraulic track adjuster, normal track guards, greased and sealed track links, 600 mm triple grouser shoe, narrow undercarriage, double track guards, full-length track guards, 600 mm double grouser shoe, and 700 mm, 800 mm, 850 mm, 900 mm triple grouser shoe.

Hydraulic Cylinders

High-strength steel piston rods and cylinder bodies. Shock-absorbing mechanism fitted in all cylinders for shock-free operation and extended piston life.

Swing Mechanism

The swing mechanism uses an axial piston motor, driving a 2-stage planetary reduction gear bathed in oil for maximum torque. Swing bearing: single-row, shear type ball bearing with induction hardened internal gear. Internal gear and pinion immersed in lubricant.

Drive

Each track is driven by an independent, high-torque axial piston motor through a planetary reduction gearbox. Two levers / foot pedals guarantee smooth travel with counter-rotation on demand. The track frame protects the travel motor, brake and planetary gears. The multi-disc track brakes are spring-applied and hydraulic released.

Strengthened boom and arm

During the development of our machines, we use intensive testing to calculate the best load distribution throughout the boom structure. Combined with thicker material, this means that element fatigue is limited and both reliability and component life are increased. To better protect the base of the arm, reinforced bars have been added and the arm center and end boss have been strengthened.

Intelligent Floating Boom Mode (Optional)

The “intelligent floating boom” function allows the boom to move up and down freely according to the application: Hydraulic breaker setting: during boom down operation, the boom moves down freely under its own weight. The result is reduced shock and vibration and longer breaker service life. Full float setting: during boom down selection, the boom is allowed to rise and fall as required while the bucket is drawn across the ground.

Comfort

One of the most spacious cabs in the market, with low noise & vibration levels and excellent all-round visibility. Fully adjustable heated air suspension seat, air conditioning with climate control as standard.

First Class Comfort

Comfortably seated, you benefit from a clear all-round view of the worksite and have easy access to several storage compartments. Noise and vibration levels are remarkably low, while air conditioning and automatic climate control allow you to keep working for hours on end without feeling tired. Pedals, joysticks and armrests have all been designed for operator comfort and efficiency.

Cab Suspension

The cab’s suspension system (CabSus mount) dampens vibrations and provides outstanding protection against impact. This system absorbs shocks and vibrations much more effectively than a conventional silentblock suspension system.

AdBlue Tank

Connected to the ECU, sensors in the tank detect low levels of AdBlue or any other system malfunction.

Pin and Bushing Advanced Technology

Highly lubricated metal is used for the boom pivot to increase the component's lifetime and lengthen greasing intervals. The bucket pivot features EM (Enhanced Macrosurface) bushings. These have a tailored surface pattern and self-lubricating coating for optimised greasing and more efficient debris removal. Ultra-hard wear-resistant discs and bucket pivot polymer shims increase durability even more.