KOMATSU R220LC-9A CRAWLER EXCAVATOR

Technical Description

The Komatsu R220LC-9A is a mid-size hydraulic excavator weighing approximately 48,502 lbs (22,000 kg), designed for versatile excavation tasks with multiple boom and stick options offering varied operational ranges. It is powered by a turbocharged Cummins QSB6.7 diesel engine delivering a net power output of 157 hp (117 kW) at 1950 rpm and maximum torque of 540 lb-ft at 1500 rpm. The engine features advanced fuel-saving technologies including a variable-geometry turbocharger, variable speed fan clutch, and multiple operating modes: power, standard, and economy. The machine’s hydraulic system utilizes two variable displacement axial piston pumps with a total flow capacity of 60.3 gpm, supporting precise and efficient boom and stick control. The R220LC-9A’s undercarriage includes 49 track shoes per side, two carrier rollers, and nine track rollers per side, with a track gauge of 7.9 ft and a ground clearance of 1.6 ft, providing stability and maneuverability. Travel speed maxes out at 3.6 mph with a drawbar pull of 46,500 lbs and ground pressure of 7.9 psi. Excavating capabilities vary depending on boom and stick combination: maximum digging depth ranges from 19.1 ft to 38.6 ft, max cutting height from 30 ft to 41.2 ft, and max reach on ground from 29.4 ft to 49.7 ft. The machine's tail swing radius is 9.4 ft, and shipping dimensions depend on boom-stick configuration with lengths between 31.3 to 39.5 ft and shipping heights around 10.3 to 10.8 ft. Additional features include an auto boom and swing priority system, regenerative hydraulics for improved efficiency, and a fully customizable cab with a 7-inch touchscreen display for monitoring and diagnostics. Fuel capacity is 105.7 gallons and hydraulic system fluid capacity 72.7 gallons, ensuring long operation intervals with reduced downtime. This machine balances power, reach, and operational flexibility, making it suitable for heavy construction and earthmoving applications.