LIEBHERR R974C CRAWLER EXCAVATORS

Technical Description

The Liebherr R974C is a heavy-duty crawler excavator engineered for demanding demolition and material handling applications. Powered by a turbocharged, common-rail-injection diesel engine delivering 543 gross horsepower and 405 kilowatts, this machine operates at 1800 rpm with eight cylinders and produces 529.8 net horsepower. The excavator weighs approximately 179,677 pounds in standard configuration, with hydraulic capacity reaching 4,641 psi and pump flow rated at 340 gallons per minute. The R974C features exceptional reach and digging capabilities across multiple boom configurations. With its longest boom and stick arrangement, the machine achieves a maximum ground reach of 45.8 feet and maximum digging depth of 30.4 feet, while maximum dump height reaches 30.2 feet. The reference bucket capacity is 6.9 cubic yards, with optional bucket sizes ranging from 2.20 to 6.20 cubic meters. The machine maintains a compact cab height of 12.6 feet and ground clearance of 2.2 feet, with total width across tracks measuring 15.7 feet. The undercarriage incorporates eight lower rollers and two upper rollers, featuring shoe widths ranging from 19.7 to 29.6 inches depending on application. Maximum travel speed is 2.8 mph with a swing speed of 5.9 rpm. Fuel capacity totals 385.7 gallons, while hydraulic fluid capacity reaches 356.7 gallons. Operating at 24 volts with an 80-amp alternator, the R974C combines power, precision, and mobility for heavy construction demolition work, material handling, and excavation operations.