Technical Description
The Hyundai Robex 55W-7 is a high-performance wheeled excavator engineered for versatility and efficiency in demanding construction environments. With an operating weight of 12,015.2 lbs and a robust 4TNV94L diesel engine delivering 57 hp (43 kW) at 2,400 rpm and 149 lb-ft of torque at 1,440 rpm, this excavator offers reliable power and responsive operation. The 4-cylinder engine features a displacement of 186 cu in and is paired with a 4-wheel hydrostatic drive system, providing two forward and two reverse gears for smooth, precise maneuverability. Maximum travel speed reaches 16.8 mph (26 kph), while the swing mechanism operates at 9.9 rpm for efficient cycle times. The hydraulic system utilizes two variable displacement piston pumps, delivering a flow capacity of 31.8 gpm and a relief valve pressure of 3,130 psi, ensuring strong lifting and digging performance. The excavator is equipped with a 0.3 cu yd reference bucket and offers multiple boom/stick configurations, with maximum cutting heights up to 20.6 ft, digging depths up to 12.5 ft, loading heights up to 14.9 ft, and reach along the ground up to 21.1 ft. Key dimensions include a 6.9 ft wheelbase, 9.4 ft cab height, 6.4 in overall width, 1 ft ground clearance, and a 5.5 ft tail swing radius. The machine features a 31.8 gal fuel tank, 2.7 gal cooling system capacity, 2.5 gal engine oil capacity, and 18.5 gal hydraulic system fluid capacity. Standard equipment includes a 12V electrical system, 55-amp alternator, and 12.0x16.5-12PR tires, making the Robex 55W-7 a durable and adaptable solution for a wide range of excavation tasks.
