Doosan Infracore North America has introduced its next-generation -7 Series crawler excavators to Canada. The initial launch includes four models, the Doosan DX140LCR-7, DX225LC-7, DX255LC-7 and DX350LC-7. More models will follow in the coming months.
The -7 Series crawler excavators feature a strengthened work group with reinforced castings and forged steel pivot points designed to withstand high-impact work, as well as a Y-shaped seal at the end of the excavator arm to provide better sealing to the bucket connection for greater performance and durability.
The excavator’s X-Chassis undercarriage is engineered to enhance durability and stability, while its track chain is sealed and self-lubricating for reduced maintenance. Its cast-steel, heavy-duty sprockets are designed to stand up to challenging work environments, and track rollers and idlers are provided with oil level check plugs to maximize machine uptime.
Inside the cab, an optional deluxe air-suspension seat is heated and cooled, and the operator will also find ergonomically designed joystick controls and a standard eight-inch Smart Touch screen. A single wiper clears both the top and bottom of the front window during inclement weather. Also included in the line is the Doosan Smart Key, a smart key fob that brings automotive convenience to construction equipment. Operators can easily unlock the cab and start the excavator’s engine with the push of a button.
From the easy-to-read touch screen, operators can monitor critical machine functions and control machine settings, rearview camera, heating and cooling, radio and Bluetooth wireless technology.
An optional 360-degree all-around view monitoring (AVM) camera system displays a full view of the machine’s surroundings, giving operators greater confidence when operating or positioning the machine in tight work areas.
The 14 metric ton to 25 metric ton crawler excavators offer a cast push link with a reinforced lifting eye that delivers a five-metric-ton lifting capacity. The design allows operators to remove an attachment and lift directly to fully utilize the machine’s lifting capacity.
The machines also feature a fine swing function that 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.
The DoosanConnect Telematics system, an equipment diagnostic tool that monitors the health, location and productivity of the machine, comes standard on all -7 Series crawler excavators.
The DX140LCR-7 makes 115 hp (86 kW) at 2,000 rpm, has an operating weight of 33,800 lb. (15,400 kg), a maximum digging depth of 19 ft. 8 in. (6 m), maximum digging reach (ground) of 28 ft. (8.5 m), and a maximum loading height of 23 ft. 3 in. (7.1 m).
The DX225LC-7 makes 174 hp (129 kW) at 1,800 rpm, has an operating weight of 52,600 lb. (23,900 kg), a maximum digging depth of 21 ft. 7 in. (6.6 m), maximum digging reach (ground) of 31 ft. 10 in. (9.7 m), and a maximum loading height of 22 ft. 5 in. (6.8 m).
The DX255LC-7 model makes 189 hp (141 kW) at 1,900 rpm, has an operating weight of 59,300 lb. (26,900 kg), a maximum digging depth of 22 ft. 4 in. (6.8 m), maximum digging reach (ground) of 32 ft. 10 in. (10 m), and a maximum loading height of 23 ft. 1 in. (7 m).
Model DX350LC-7 makes 285 hp (213 kW) at 1,800 rpm, has an operating weight: 81,791 lb. (37,100 kg), maximum digging depth of 24 ft. 8 in. (7.5 m), maximum digging reach (ground) of 35 ft. 11 in. (11 m), and a maximum loading height: 23 ft. 6 in. (7.2 m).
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