Photo by Doosan Infracore North America
Doosan Infracore North America -7 series crawler excavators

Next-Generation Doosan Crawler Excavators Offer Intelligent Controls

July 19, 2022
Updates to the -7 Series excavators include a strengthened work group with reinforced castings and forged steel pivot points for high-impact work.

Doosan Infracore North America introduces its next-generation -7 Series crawler excavators in the United States and Canada. The initial launch includes four models, with more excavators to be announced in the coming months. The first models are the Doosan DX140LCR-7, DX225LC-7, DX255LC-7 and DX350LC-7.

The innovative Doosan -7 Series crawler excavators deliver fuel efficiency and productivity that operators need to complete the work, the company said. The -7 series offers more comfort features, intelligent controls, and smart machine functionality.

“Doosan continues to build on the success of its existing excavator platform with more machine features that help our customers improve their productivity,” said Joel Escalante, product specialist. “We’ve enhanced the excavator cab with additional comfort features and now offer an all-around view monitor for even better operator visibility of the jobsite.”

Updates to the -7 Series excavators include a strengthened work group with reinforced castings and forged steel pivot points for high-impact work. A new Y-shaped seal at the end of the excavator arm provides better sealing to the bucket connection for enhanced durability.

Doosan added material to the excavator’s mainframe for higher performance and jobsite versatility. The excavator’s X-Chassis undercarriage enhances durability and stability, while the track chain is sealed and self-lubricating for reduced maintenance. Cast-steel, heavy-duty sprockets are designed to perform in challenging work environments, and track rollers and idlers are provided with oil level check plugs to maximize machine uptime.

The optional 360-degree all-around view monitoring (AVM) camera system displays a full view of the machine’s surroundings. Five unique visual perspectives can be seen from the separate AVM monitor: top view, rear view, top+right view, rear+corner view and 3D view. The AVM camera system can be linked with optional ultrasonic detection sensors for an additional level of awareness of objects behind the machine.

Operators can lift more weight with each cycle and complete their jobs faster with Doosan excavators designed and tested to maximize lifting capability. The standard counterweight provides improved machine stability when using heavier attachments. With an optimal swing radius, lift height and tilt position, operators can lift and place loads and dig with greater productivity.

The -7 Series crawler excavators (14 metric ton to 25 metric ton) offer an upgraded, cast push link with a reinforced lifting eye that delivers a five-metric-ton lifting capacity. This design allows operators to remove an attachment and lift directly to fully utilize the machine’s lifting capacity.

New for the -7 Series is the fine swing function (14 metric ton to 25 metric ton). This function minimizes the shaking of a lifted object that occurs at the beginning or end of the swing movement. Operators can activate it for greater control and accuracy in certain lifting applications. This feature improves safety in pipe laying and maintains the bucket heap to maximize productivity.

The new reduced tail swing counterweight design, along with the tighter front minimum swing radius on the reduced tail swing models, allows operators to work in confined areas — such as waste transfer stations and single-lane roadways — without sacrificing machine performance.

Doosan attachments are designed to match the excavator load ratings and hydraulic performance. A 16 gpm PTO (power take-off) pump improves the performance of various excavator attachments that require more hydraulic flow.

The DoosanCONNECT Telematics system comes standard on all -7 Series crawler excavators, which enables customers to remotely monitor and maintain their machines. DoosanCONNECT Telematics is an equipment diagnostic tool that monitors the health, location and productivity of Doosan construction equipment from a mobile app and website. The data pulled from the machines is uploaded automatically to the DoosanCONNECT online system using dual-mode communications (cellular and satellite) for maximum coverage. Doosan dealers can access the machine data and work with customers to resolve issues or make preventive maintenance recommendations to minimize downtime.

Four Power Modes

Doosan continues to offer four selectable power modes:

  • Power+ mode delivers the fastest work group speeds to save more time when loading trucks. Top digging performance delivers extra power for digging in hard ground and other tough conditions.
  • Power mode provides power and performance for tough digging and heavy lifting. It also provides quick truck loading and fast travel speed to save time.
  • Standard power mode optimizes fuel consumption and delivers high performance in everyday digging, grading and lifting.
  • Economy mode reduces fuel consumption for low-demand applications and slows down machine movement, which is ideal for fine digging, light grading conditions and jobsite conditions that require extra precision.