The John Deere 590D is a mid-size hydraulic excavator engineered for robust performance in demanding excavation applications. Powered by a turbocharged John Deere 4276T engine, the unit delivers 95 SAE net horsepower and 284 foot-pounds of maximum torque, providing reliable power across diverse job site conditions. The excavator features an advanced hydraulic system utilizing twin variable-displacement axial-piston pumps with speed-sensing controls, delivering 41.7 gallons per minute at 5050 psi system relief pressure, enabling efficient and responsive operation across multiple functions. Operators can select from Power, Economy, or Light modes to optimize performance based on specific requirements. The 590D accommodates two boom/stick configurations: the standard 2.6-meter arm achieves a maximum digging depth of 19.9 feet and reach of 28.7 feet, while the extended 3.1-meter arm provides enhanced capabilities with 21.5 feet maximum digging depth and 30.2 feet reach along ground. The excavator offers flexible bucket options ranging from 0.5 to 1.1 cubic yards, with a reference capacity of 0.9 cubic yards, accommodating diverse material handling tasks. Built for durability, the 590D features heavy-duty rollers, welded box-section track frame, and sealed swing bearing for extended service life. The undercarriage includes 45 shoes per side with 7 track rollers, generating 6.7 psi ground pressure. Operating weight reaches 33,180 pounds with full fuel tank and operator, while maintaining a compact width of 8.5 feet to outside tracks. The swing mechanism employs high-torque hydraulic motor with planetary gearing, rotating at 13.5 rpm, providing superior digging performance and maneuverability for production-class excavation work.