This 2011 Hyundai Robex 320 LC-7 is a used crawler excavator — sometimes called a digger or tracked excavator — built for heavy earthmoving, excavation, demolition, and material-handling work across construction, mining, and civil engineering applications. Hyundai is a well-established South Korean manufacturer producing a broad range of heavy construction and earthmoving equipment, including excavators, wheel loaders, and forklifts, serving contractors and operators worldwide. This machine is currently located in Chile.
Power comes from a Cummins C8.3-C six-cylinder turbocharged diesel engine with an 8.3-litre displacement. Total power output is rated at 193.1 kW, with an effective power figure of 173 kW, both measured at 1,750 RPM. Maximum torque is 1,218.9 Nm, taken at 1,300 RPM, providing strong pulling capability across a wide rev range.
The undercarriage runs on tracks 2,680 mm wide, with each side carrying 48 shoes sized at 600 mm. Each side is supported by two carrier rollers and nine track rollers. Ground pressure is 60.8 kPa, reflecting the machine's 32,200 kg operating weight spread across a wide footprint. Maximum travel speed is 5.4 km/h, and the machine develops a traction force of 279.5 kN.
The bucket arrangement offers considerable flexibility: a standard capacity of 1.4 m³, a minimum configuration of 0.9 m³, and a maximum of 2.1 m³, allowing the machine to be matched to different material densities and task requirements. The swing system rotates at 9.1 RPM.
The hydraulic system is substantial, with a pump capacity of 520 litres per minute and a main relief valve pressure of 32,336.4 kPa. Hydraulic fluid volume is 320 litres. The fuel tank holds 480 litres, supporting extended working shifts, while the cooling system holds 45 litres of coolant and the engine takes 25.5 litres of oil. The boom-length adjustment mechanism carries 11 litres of fluid. The electrical system operates at 24 V with a 50-amp generator.
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