日立建機 ZX 55 U

Product Overview The Hitachi ZX55U is a 5-ton class mini hydraulic excavator manufactured by Hitachi Construction Machinery. The "U" means short tail swing, allowing work in confined spaces. This model is used in urban construction, landscaping, utility installation, and foundation work. Key Specifications Operating Weight: 4,790 - 5,310 kg Engine Power: 29.1 kW (39 hp) Bucket Capacity: 0.1 - 0.17 m³ Max Digging Depth: 3,530 - 3,830 mm Max Digging Reach: 5,960 - 6,260 mm Max Dumping Height: 4,070 - 4,310 mm Transport Length: 5,470 - 5,520 mm Transport Width: 2,000 mm Transport Height: 2,530 mm Engine The ZX55U is powered by a Yanmar 4TNV88 diesel engine. This 4-cylinder, 2.189 liter engine is known for reliability and low fuel consumption. The common rail fuel system helps lower operating costs. Hydraulic System The hydraulic system uses a variable displacement axial piston pump. The implement system delivers smooth control for boom, arm, bucket, swing, and travel. Pilot hydraulic controls ensure effortless operation. Dimensions Track Length: 2,500 mm Track Gauge: 1,600 mm Track Shoe Width: 400 mm Undercarriage Width: 2,000 mm Rear-end Swing Radius: 1,000 - 1,100 mm Work Ranges Max Digging Reach: 6,260 mm Max Digging Depth: 3,830 mm Max Cutting Height: 6,000 mm Max Dumping Height: 4,310 mm Max Vertical Wall Digging Depth: 3,140 mm Undercarriage The ZX55U features a durable track undercarriage with a dozer blade at the front. Track shoes are 400 mm wide. Rubber tracks protect finished surfaces. The dozer blade is longer than previous models for more material collection. Operator Cab The ROPS certified cab meets safety standards. A multi-functional LCD monitor displays engine RPM, coolant temperature, fuel level, and service reminders. The operator seat is comfortable with easy to reach controls. Safety Features Short tail swing protects operators near walls. ROPS certified cab. Hydraulic lock lever for safe starting. Reverse alarm. Maintenance Wide-opening engine covers for easy access. Sloped track frame tops for easy mud removal. Grouped filters for convenient replacement. Applications Urban construction, landscaping, utility installation, rental fleet, foundation work, indoor demolition, road repair, and farming. Popular Variants ZX55U-5A: 5.2 ton, earlier emission standard ZX55U-6: Stage V engine, improved lift capacity ZX55U-6EB: zero emission electric model Advantages Zero tail swing for confined spaces. Reliable Yanmar engine with low fuel consumption. Good visibility. Global Hitachi dealer network for parts and service. Summary The Hitachi ZX55U is a reliable 5-ton mini excavator for contractors and rental companies worldwide. For second-hand units, inspection reports and working videos available.