KOMATSU PC120 CRAWLER EXCAVATOR

Technical Description

The Komatsu PC120 hydraulic excavator is a medium-sized, turbocharged machine powered by a 90 hp (67 kW) S4D105-5 engine with a displacement of 264.3 cubic inches. Its operating weight is approximately 25,350 lbs, supported by a robust undercarriage with an 18.9-inch shoe size and 6.4 ft track gauge, providing a ground pressure of just 6 psi. The excavator offers two boom and stick configurations: Option 1 delivers a max cutting height of 24.8 ft, digging depth up to 16.5 ft, loading height of 17.2 ft, and ground reach of 24.8 ft; Option 2 extends these figures, achieving a max cutting height of 25.3 ft, digging depth of 19.5 ft, loading height of 18.3 ft, and a 27.4 ft max reach along the ground. Its vertical wall digging depth ranges from 13.8 to 15.4 ft depending on the boom/stick option. Dimensions include a shipping height of 8.8 ft, length of about 24.6 ft, width of 8 ft, with a tail swing radius of 7.3 ft and ground clearance of 1.4 ft. The 60.8-gallon fuel tank supports long operation times, while the hydraulic system operates at a relief valve pressure of 2500 psi with a pump flow capacity of 85.4 gallons per minute and fluid capacity of 38.4 gallons. The swing mechanism runs at 12 rpm, and the excavator can travel up to 2.3 mph. This combination of power, reach, and hydraulic capacity delivers efficient digging, loading, and material handling suitable for medium-duty construction and excavation tasks.