The Caterpillar 390D L is a heavy-duty hydraulic excavator engineered for large-scale earthmoving and material handling operations. Powered by a robust Cat C18 ACERT engine delivering 523 horsepower and 390 kilowatts, this machine combines impressive digging capacity with efficient fuel consumption through electronically managed power settings. The excavator features a maximum digging depth of 35 feet and an extended reach of 53.3 feet along ground level, making it suitable for deep excavation and extensive horizontal reach applications. Its advanced hydraulic system incorporates three independent pumps with load-sensing technology, delivering 258.89 gallons per minute at maximum pressure of 5,076 psi for precise power and control. The boom cylinder operates at 8.3-inch bore with 77.5-inch stroke, while the stick cylinder features 8.7-inch bore and 89.1-inch stroke, generating substantial digging forces for demanding tasks. Operating at an impressive weight of 190,016 pounds on its long undercarriage configuration, the 390D L maintains stability with 51 track shoes, nine track rollers, and three carrier rollers per side. The swing mechanism rotates at 6.2 rpm with swing pressure rated at 3,770.9 psi. With a 327.6-gallon fuel capacity and 262.9-gallon hydraulic system, the machine delivers extended operational endurance. The spacious cab provides excellent visibility and ergonomic controls, while standard auxiliary hydraulics enable versatile attachment options. Manufactured between 2011 and 2015, this model represents Caterpillar's commitment to combining high performance with serviceability and operator comfort in large-scale excavation equipment.