JOHN DEERE 120C CRAWLER EXCAVATOR

Technical Description

The John Deere 120C Excavator is a robust mid-sized hydraulic excavator designed for versatile construction and earthmoving tasks. It features a John Deere 4045H turbocharged, air-to-air charge air-cooled 4-cylinder diesel engine delivering 89 hp (66 kW) at 2200 rpm, with a peak torque of 275 lb-ft at 1400 rpm, ensuring steady power output and compliance with emission standards. The machine has an operating weight of approximately 28,840 lbs and a fuel capacity of 66.1 gallons, supporting extended operational periods. Its undercarriage includes 44 track shoes per side with a track gauge of 6.6 ft and track rollers totaling 7 per side, providing excellent stability and a ground pressure of about 4.9 psi, which minimizes surface impact. The 9.5 ft length of track on ground and a max travel speed of 3.5 mph enhance maneuverability. The 120C offers two boom/stick options: Option 1 provides a maximum digging depth of 17.9 ft with a max reach along the ground of 26.3 ft, while Option 2 extends digging depth to 19.5 ft and reach to 27.9 ft, both enabling work on deep and hard-to-reach excavation sites. The excavator’s hydraulic system features a high-capacity 55.5 gpm pump and operates at a relief valve pressure of 4980 psi, supporting a hydraulic fluid capacity of 35.4 gallons. It has a maximum bucket capacity of 1.4 cubic yards, with a reference capacity of 1.1 cubic yards, suitable for heavy material handling. The cab height measures 9 ft, and the tail swing radius is 7 ft, allowing operation in confined spaces. Swing speed reaches 13.7 rpm with a swing torque of approximately 24,387 lb-ft, facilitating precise and rapid boom movement. Overall, the John Deere 120C is an efficient, reliable excavator ideal for construction, utility, and landscaping projects requiring dependable power and reach.