DL320-7 Doosan DL320-7 Specifications & Technical Data (2021—2023)

Meet the New Generation of Doosan Machines

Boost your productivity with the new DL320-7 and DL380-7 Doosan wheel loaders. Exceptional power – combined with the finest workmanship – results in machines that perform at the highest level.

The DL320-7 and DL380-7 enhance your output from every angle

Impressive breakout force and high traction make penetration easy and allow you to tackle the hardest materials. Powerful hydraulic system makes work quick and efficient. Doosan DL08 engine provides the power you need while meeting Stage V environmental regulations. The combination of these features gives Doosan wheel loaders excellent penetration power, ensuring optimum bucket load in each cycle.

Environment-friendly power

The DL320-7 and DL380-7 are powered by a Doosan DL08 engine compliant with the Stage V emissions regulations. High-pressure fuel injection and precise timing provide highly efficient fuel burn and perfect combustion. The aftertreatment system is composed of a selective catalytic reduction module, an oxidation catalyst, and a long-life particulate filter to reduce emissions without requiring an EGR (exhaust gas recirculation) valve.

Exhaust

The inner exhaust pipe sucks air out of the engine compartment through an outer pipe – this 'chimney' effect provides constant air circulation and prevents deposits of flammable material on hot parts.

Easy entry and exit

Grab handles and offset steps with slip-resistant surfaces provide safe & easy access to the cab and easy exit when work is finished. The door opens 180° and can be locked in the open position - to provide a wide opening for moving in and out of the machine.

Air intake

Maintenance-free cyclone air pre-filter separates more than 99% of particles 20 microns in size and larger. Cleaning and cartridge replacement are only needed at long intervals. In addition to extending the air filter's lifetime, the pre-filter also ensures better combustion and a longer engine lifetime.

Automatic lubrication system

The DL320-7 and DL380-7 are standard equipped with a factory-fitted auto-lube system, with greasing point at the middle of the pin and bushing for better grease distribution and enhanced lifetime.

Improved productivity

This new range gives you access to buckets with higher capacities on the Doosan Wheel Loaders - so you have more possibilities to optimize the bucket size for the density of your material.

Efficient power management

You can select from 3 different engine working modes – SAT, Standard and Power – while the Power-up function lets you switch the parameters to level-up working mode with lower transmission shift intervals by fully applying the acceleration pedal. The latest generation of automatic power management settings – Situation Awareness Technology 2 – automatically monitors the machine’s activity and adjusts the engine’s output according to the result of the real-time analysis.

Variable geometry turbocharger

Optimizes boost pressure over a wide range of engine speeds. The turbocharger generates higher torque, provides faster response, and reduces fuel consumption.

Save fuel, save money

Auto Idle: The standard auto idle feature automatically reduces the engine revs to standby idle a few seconds after the steering wheel, gearshift control lever, and accelerator cease movement. This reduces noise, improves jobsite communications, and saves fuel. When you move the controls, the loader automatically returns to working idle. Auto Shutdown: When enabled, the engine automatically shuts down after idle time reaches a specified elapsed time (3 to 60 minutes).

Powertrain

The Doosan transmission has 5 gears to boost acceleration performance, especially on climbs with the lock-up. The gear ratios are optimized, and smooth, shock-free shifts contribute to the high overall level of operator comfort. Traction force is also maximized. Together, these qualities enable high working speed in all conditions.

Doosan smart key

We bring automotive standards and comfort to construction machinery. Search function Coming/leaving home light function Remote door opening Keyless engine start.

Doosan smart guidance system

Boost your performance and reduce fuel consumption based on the system's recommendation. The machine automatically monitors and analyses driving strategy and recommends how to improve settings.

Boost your productivity

Ride control – Load Isolation System Bucket auto leveling function End-stroke cushioning for smooth arm and work tools movements Optimized shifting program.

I.c.c.o. (intelligent clutch cut-off)

Need more engine power for lift arm speed? In lower gears, simply depress the left brake pedal to disengage the transmission. You can disengage the transmission cutout with your switch panel to start moving on an incline with greater ease.

Torque converter with lock-up function

The DL320-7 and DL380-7 also feature a torque converter lockup. When this is activated, the engine automatically connects directly to the transmission (depending on speed and travel resistance), even from 2nd gear. The transmission receives the full engine power without hydraulic slip – thus increasing speed on slopes dramatically. This feature can save you up to 10% in fuel costs.

Transmission

5-gear powershift transmission with 3 operating modes: manual, fully automatic, or semi-automatic with 'kick-down' function. Based on high-quality components, it is equipped with a modulation system for protection and smooth gear and direction changes. A manual transmission control lever is located to the left of the steering wheel, and a direction change function is also available in automatic or semi-automatic mode. The transmission can be disengaged by the brake pedal to deliver full engine power to the hydraulic system. A safety device prevents the engine from starting if the transmission is not in neutral, and the torque converter lock-up function operates from 2nd to 5th gear.

Comfortable automatic lift arm

Save time and reduce the number of operations with the new bucket leveling function. Automatically return the bucket to dig position from roll back or dump position. Automatic function is also available for lift arm positions.

Maximize your uptime

Massive frame Automatic lubrication system Wide fin radiator and reversible fan DoosanConnect fleet management

Cooling package

Wide pitch fin radiators coupling with reversible fan keep the cooling system performing constantly - minimizing machine downtime and reducing daily maintenance. The operator can easily set standard intervals for fan reverse from the Doosan Smart Touch. Performance is regulated for lower fuel consumption and shorter warm-up periods.

Hydraulic System

Load sensing – closed center hydraulic system. Dual variable displacement axial pistons pumps. Automatic functions for positioning the bucket ready to dig and a function for stopping the lift arm at the desired height. In the oil return to the tank, the fiberglass filter has a filtering capability of 10 micron.

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.

Brakes

Dual multi-disc circuit with sintered metal discs for extended service life. Braking system activated by a pump and accumulator circuits. Spring-applied, hydraulically released parking brake is mounted on the transmission shaft and accumulator circuits and is electronically activated. Brake type: spring-applied / hydraulically released. Brake pump with variable displacement axial pistons provide 55 l/min (DL320-7) and 58 l/min (DL380-7). Operator can activate/deactivate the Intelligent Clutch Cut-Off on the brake pedal from a switch and can adjust the sensor proximity with the same switch. The emergency brakes are composed of a double system continually under pressure by accumulators.

Full Fenders

To keep them clean and avoid mud splashing on the windows or accidents on slippery steps, Doosan’s wheel loaders are standard equipped with full fenders and mud guards. Enlarged front fenders protect front windows and ensure maximum operator visibility.

Adjustable Steering Column

Enhance your driving comfort, and work without fatigue, by easily adjusting the steering column’s tilt and telescopic movements to fit your preferred position.

Electric Joystick Steering

Keep your concentration and reduce strain with the comfortable joystick steering integrated on the armrest. Drive your machine easily, especially in repetitive tasks and tight spaces. You can customize the sensitivity level – from low to high. For better controllability, steering sensitivity changes with travel speed.

Luxury Chair

Improved high comfortable seat with vertical and horizontal low-frequency suspension, pneumatic lumbar support, heating and 3-point safety belt with alarm icon on gauge panel and in Doosan Smart Touch.

Spacious Cab

Re-designed interior offers much larger, quieter and more comfortable operator environment, which improves safety and productivity and helps the operator work with high concentration. Increased leg room with re-designed accelerator and brake pedal position. Enlarged storage area and cool-box position increase operator comfort. Improved air conditioning system, with optimized air circulation, ensures a pleasant working environment.

Visibility

Completely re-designed cab improves operator comfort and safety. Enlarged front windshield ensures better front visibility, while larger mirrors extend operator's view on the sides and rear - providing maximum safety for pedestrians and machine and improving productivity at the same time.

Maximum Safety

Rear-view camera Full hand rails for safe maintenance Up to 12 LED working lights available Rear-view mirrors with electric adjustment possibility 3-point safety belt

Business Class Operator Comfort

The new spacious cab offers an operator-friendly environment with top-class all-round visibility. It centers around a high comfortable seat with 3-point safety belt for maximum operator safety. The joystick is fully integrated in the seat's right armrest. The electrically adjustable rear mirror contributes to maximum operator comfort.

Cab

Safety compliance with Roll Over Protection System (ROPS) and Falling Object Protective Structure (FOPS) requirements. Spacious modular cab with excellent all-round visibility and ample storage space. Good overview of the bucket, tires and loading area thanks to wide windows. Pushbutton controlled air conditioning and heating with air recirculation function. Double cab air filter installed in the cab with extra protection for the operator in dusty or polluted environments. Viscous suspension mount for maximum comfort. Adjustable high-quality heated seat with air suspension, arm rests and height and tilt adjustable steering column. All operating information clearly displayed in front of the operator. Control functions are centralized on a console on the right.

Fast Cycle Times

The entire Doosan wheel loader lineup is carefully engineered for a perfect balance of speed and controllability – so you benefit from optimal production. Variable displacement piston pumps in all models allow Doosan wheel loaders to power through difficult jobs with minimal fuel consumption and multifunction operation of the lift arm and bucket.

Optimized for your machine

A genuine Doosan bucket is the best fit for a Doosan Wheel Loader. Your bucket and your wheel loader are a single machine, not separate entities. Kinematics, breakout force, capacity, material retention, operator vision - our engineers optimize the bucket's performance in every aspect to maximize your productivity.