DX245NHD-7 Doosan excavator specs & Dimensions (2021 - 2023)

Designed to Move Mountains

Lift your business to the next level with the next generation DX245NHD-7 and DX235LC-7 Doosan excavators. Exceptionally powerful, yet environmentally-friendly, the DX245NHD-7 and DX235LC-7 excavators are designed for the toughest applications.

Unique Heavy-Duty Undercarriage (DX245NHD-7 Only)

The DX245NHD-7 is designed for the most severe applications. Chains, rollers, sprocket, shoes and the chassis itself are oversized to increase lifetime in the most abrasive applications. In addition, this model has only 2.54 m transportation width to meet transport regulations.

Extra-Strong X Chassis

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

Undercarriage Durability

The undercarriage is specially designed for heavy-duty applications, like mountains with rocky ground features. 30t-class undercarriage components. Chains, rollers, sprocket, shoes and the chassis itself are oversized to increase lifetime in the most abrasive conditions. The chain is composed of sealed, self-lubricating links for long-term dependability. Chains and track rollers are lubricated for life. For improved protection, alignment and performance, we propose as option a full-length track guard. The track spring and idler are joined for long-lasting performance and easy maintenance. Cast steel heavy-duty sprockets guarantee the highest resistance.

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 optimized greasing and more efficient debris removal. Ultra-hard wear-resistant discs and bucket pivot polymer shims increase durability even more.

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

General Construction Bucket

The General purpose bucket is designed for digging and re-handling soft to medium materials (e.g. materials with low wear characteristics such as top-soil, loam, coal).

Heavy Construction Bucket

The Heavy duty bucket is designed for mass excavations in dense materials such as hard packed clay, shot limestone, limited rock content and gravel.

Severe Mining Bucket

The Severe duty bucket is designed for durability in digging compact materials like loose or blasted rock, hard packed clay and stone.

X-treme Mining Bucket

The X-treme duty bucket is designed as a long-life version of the Severe duty bucket for digging in the most abrasive materials.

Undercarriage DX245NHD-7

HD undercarriage with 50 t class excavator components Narrow fixed undercarriage 2450 mm with 550 mm heavy duty shoes Full Track Guard for heavy duty application

Undercarriage DX235LC-7

Standard fixed undercarriage 2990 mm with 600 mm triple grouser shoes 700 mm triple grouser shoes 800 mm triple grouser shoes 900 mm triple grouser shoes

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 124 kW at 1800 rpm.

Full control over fuel consumption

The latest evolution of the legendary Stage V Doosan DL06P engine achieves greater fuel savings thanks to the 3rd generation of Smart Power Control (SPC3). Take full control over your fuel consumption with the settable engine shut off.

Efficient fuel management

Choice of 4 power modes (Eco - Standard - Power - Power Plus) and automatic Smart Power Control system for optimal power and reduced fuel consumption in all conditions. Engine auto-shut-off: shuts down the engine after the machine has been idling for a specified time. The operator can set the delay before shut-off via the Doosan Smart Touch screen.

Variable pressure turbocharger

Provides optimal air flow to the engine combustion chamber under all speed and load conditions, so that exhaust gas is cleaner and fuel economy is improved.

Spc3 (3rd generation of smart power control)

2 systems (Variable Speed Control and Pump Torque Control) work together to improve efficiency while maintaining productivity. The system reduces the engine speed and adjusts the pump torque according to work conditions.

Advanced filtration

Fuel filters and water separator: a filter-type high-performance water separator effectively captures moisture in the fuel, reducing impurities and helping minimize any fuel-related issues. Pre-filters and dual main filters as standard achieve a high degree of purity that minimizes fuel system failures. Cyclonic air pre-cleaner: air filter life and engine efficiency are directly related to the amount of debris ingested through the engine’s air intake. Therefore, a cyclonic air pre-cleaner (as standard) is the first stage of an air intake system that prevents the majority of heavier-than-air particles from entering. Self-cleaning and maintenance-free, the system is able to expel all types of mixed debris, including mud, snow, rain, leaves, sawdust, chaff, etc.

Dynamic Power Management

Automatic travel speed range selection (slow/fast) Activating the power boost control system increases digging force by 10% A 1-touch deceleration button immediately reduces engine speed to low idle Auto-idling starts 4 seconds (adjustable) after all controls are returned to neutral – reducing fuel consumption and noise levels in the cab.

Other

DX245NHD-7: 5700 mm boom – 2400 mm arm – 5000 kg counterweight DX235LC-7: 5700 mm boom – 2900 mm arm – 5000 kg counterweight DoosanCONNECT (telematic system) Auto shut-off fuel filler pump Double element air cleaner and pre-filtered Turbo dust separator Fuel pre-filter with water separator sensor Dust screen for radiator/oil cooler Self-diagnostic function Batteries (2 x 12 V, 150 Ah) – alternator (24 V, 100 A) Hydrostatic drive with 2-speed power shift transmission Remote greasing for swing circle and work group pivot points Arms: 2400 mm and 2900 mm Boom: 5850 mm articulated boom DOOSAN buckets: full range of GP, HD & rock buckets DOOSAN breakers and DOOSAN quick-couplers Automatic lubrication system Air compressor

Versatility

A new attachment mode, with a priority valve on the attachment, results in higher working efficiency when moving the arm and using the attachment at the same time. A specific tiltrotator mode provides more precision and less back pressure when high flow is required.

4 Work Modes and 4 Power Modes

These modes deliver the needed power according to your specific application while minimizing fuel consumption: Work modes: 1-way mode, 2-way mode, Digging mode, and Lifting mode. With the 2-way mode, we now have a priority valve on the attachment line to increase the machine’s productivity when using an attachment and moving the arm at the same time. A new mode is also available, dedicated for tilt rotator use, to maximize precision and minimize back pressure. Power modes: Power Plus mode, Power mode, Standard mode, Economy mode.

Hydraulic system

The e-EPOS (Electronic Power Optimising System) is the brain of the excavator, minimizing fuel consumption and optimizing the efficiency of the hydraulic system for all working conditions. To harmonize the operation of the engine and the hydraulics, the e-EPOS is connected to the engine's electronic control unit (ECU) via a data transfer link. The hydraulic system enables independent or combined operations. 2 travel speeds offer either increased torque or high speed. Cross-sensing pump system for fuel savings. Auto-deceleration system. 4 operating modes, 4 power modes. Flow and pressure control of auxiliary hydraulic circuits from the control panel. Computer-aided pump flow control. The hydraulic system includes boom and arm flow regeneration, fine swing mode (on or off from cab), swing anti-rebound valves, spare ports (valve), one-touch power boost function, double way line high flow with breaker piping (PE3C), Smart Power Control (SPC), cylinder cushioning & contamination seals, clamshell piping (diverter valve from bucket cylinder), hydraulic piping low flow for rotating or tilting tool (joystick control), and hydraulic piping for quick-coupler with double pump flow and floating boom.

Hydraulic cylinders

High-strength steel piston rods and cylinder bodies are used. A shock-absorbing mechanism is 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.

Your safety is our priority

Rear and right side cameras as standard, anti-slip steps and platforms, as well as guard rails on upper structure. Optional: a 360° all-around view camera (AVM) can be linked with unique ultrasonic detection for maximum safety while working with people around. Large side mirrors, 9 powerful LED work lights (4 additional lights possible as an option), travel alarm.

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.

New Fine Swing Function

Another new standard feature is the Fine Swing function. This function minimizes the shaking that a lifted object undergoes at the start or stop of the excavator’s swing movement – increasing the safety of nearby workers and preventing damage caused by the object falling from the excavator. When Fine Swing activates, the overrun shuts off, allowing the DX245NHD-7 and DX235LCR-7 to smoothly reach maximum swing speed and removing the shock from the turn reversal at the moment of stopping - resulting in a smooth stop.

Safety Features

Roll Over Protective Structure (ROPS), boom and arm cylinder safety valves, overload warning device, large guard rails on upper structure and steps, rotating beacon, punched metal anti-slip plates, hydraulic safety lock lever, safety glass, hammer for emergency escape, right and left rear-view mirrors, lockable fuel cap and covers, battery cut-off switch, emergency engine stop switch and hydraulic pump control switch, engine restart prevention system, guard rails (ISO 2867:2011), parking brake, LED 9 work lights (2 boom lamps, 5 body lamps, 2 additional lamps on cab), LED work lights with 4 additional lamps (2 in the front, 2 in the rear of the cab), Falling Objects Guard System – top and front cab guards (ISO 10262 level II and SAE J1356), front window upper and lower guards.

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. It is also equipped with an AdBlue level indicator during refilling (LED light) to avoid overfilling.