HITACHI EX550H CRAWLER EXCAVATOR

Technical Description

The Hitachi EX550H is a large hydraulic excavator engineered for demanding excavation tasks, featuring a robust Cummins NTA855 diesel engine delivering 394.3 hp (294 kW) gross power and 364.8 hp (271 kW) net power at 2100 rpm, with maximum torque of 1135.9 lb-ft at 1400 rpm. The engine has a bore of 5.6 in, stroke of 6 in, and displacement of 854.4 cu in. With an operating weight of 120,592.9 lbs, the EX550H offers a max cutting height of 39.5 ft, max digging depth of 27.1 ft, max loading height of 27.4 ft, and max reach along ground of 41.9 ft. The bucket capacity reaches up to 4.5 cu yd, supporting efficient material handling. The machine measures 42.4 ft in shipping length and 14 ft in shipping height, with a width to outside of tracks of 12.9 ft, ground clearance of 2.7 ft, and a tail swing radius of 12.5 ft. The undercarriage features a track gauge of 10.5 ft, 49 shoes per side, 8 track rollers per side, and 3 carrier rollers per side, with a shoe size of 23.7 in and ground pressure of 14.1 psi. The swing speed is 8 rpm, and the max travel speed is 3 mph (5 kph). The hydraulic system provides a pump flow capacity of 100.9 gpm and a system fluid capacity of 148 gal, while the cooling system holds 18.5 gal and the engine oil capacity is 11.7 gal. The fuel tank capacity is 185 gal, and the operating voltage is 24 volts.