At ConExpo 2020 Doosan unveiled its largest excavator yet for the North American market, an 80-metric-ton machine slated for release at some point late in 2020.
Doosan says the machine is intended for mining applications like removing overburden and loading large amounts of material into articulated dump trucks or rigid frame trucks.
You can watch a video for all the details on the new DX800LC-7 below. Or if you prefer text, read on after the break.
But the machine is also a good fit on large construction projects, particularly infrastructure jobsites where lots of material needs to be excavated and stockpiled or loaded into trucks for transport offsite.
The machine is powered by a 540-horsepower engine and has a bucket digging force of 84,878 lb-ft. Arm digging force is 75,619 lb-ft and the maximum digging depth is 39 feet, 9 inches. Max digging reach from ground level is 42 feet, 5 inches and max loading height is 27 feet, 7 inches.
The DX800LC-7 on display at ConExpo was set up as a mass excavation boom and arm configuration with a 6-yard bucket on the front.
Currently, Doosan’s largest excavator is the DX530LC-5, a 53-metric-ton model. Doosan Infracore North America product marketing manager Aaron Kleingartner tells Equipment World that Doosan expanded the lineup to 80 metric tons based on customer request.
“It pairs very well with our large articulated dump trucks and the customers like that they can now have a paired brand of machines to work their jobsites,” he says.
Moving on to the cab, Kleingartner says the design is based on Doosan’s current cab design for its other large excavators and features two monitors. The standard monitor gives operators a look at all maintenance and other data on the machine while the second monitor offers views from the side- and rear-view cameras. (Check out our video above for a look inside the cab.)
“This particular machine is set up with a guarding mechanism on the top and on the front of the cab that is very common in aggregates and small mining applications,” he says.
As for controls, operators will be able to select between ISO or BHL controls and either joystick or lever steering.
The configuration of the DX800 on display at ConExpo also featured an optional hydraulically removable counterweight that greatly simplifies trailering and transport between jobsites.
“You don’t need a second machine to remove that mechanism. You lower it directly onto a trailer and you’re able to transport the machine separately from the counterweight to help with permit issues you might have in your local markets,” Kleingartner says.
Finally, Kleingartner says Doosan engineers worked to ensure that maintenance points on this machine are easily accessible. There are grouped maintenance items for grease points, an automatic greasing option and it has easy access to the DEF and fuel fill points on the right side.
The ConExpo unveiling of this machine was more of a preview rather than an official launch and as such Doosan says more details about the machine will be released closer to launch.
