斗山 DH55-7

Standard digging bucket, rock bucket, narrow bucket, hydraulic breaker, hydraulic rotating grapple, fixed grapple, single-tooth ripper, double-tooth ripper, tilt bucket, hydraulic shear, dozer blade, hydraulic quick coupler, ROPS/FOPS protective structure, sunshade, air conditioning, rearview mirror extensions, rotating warning light, reversing buzzer, work lights, hydraulic breaker hose kit, automatic grease pump, manual grease pump, hydraulic oil cooler upgrade, air filter, engine oil filter, fuel filter, hydraulic return filter, hydraulic suction filter, bucket teeth, bucket tooth pins, cutting edge, side teeth, bucket wear plates, track plates, idler, track roller, boom cylinder assembly, arm cylinder assembly, bucket cylinder assembly, seals, high-pressure hoses, central rotary joint, generator, starter motor, dashboard, sensors, wiring harness assembly, I-beam, linkage, pins, bushings

The Doosan DH55-7 is a 5.7-ton tracked mini backhoe excavator under the South Korean Doosan Group, representing the 7th generation model. It is renowned for its reliability, flexibility, efficiency, and low operating costs, making it a classic choice for urban infrastructure, landscaping renovation, and small-scale earthworks in confined spaces. Power system: The Isuzu CC-4JG1 engine is mature and durable, compatible with domestic fuel, with fuel consumption of approximately 6-8L/h. Noise and vibration control are good, meeting environmental standards. Hydraulic system: Load-sensitive hydraulic pump paired with pilot control for precise actions, smooth combined operations, quick main valve response, reasonable flow distribution, and stable oil temperature control. Structure and chassis: The boom and arm feature reinforced design, key areas are strengthened with wear plates, track tension is adjustable, the chassis is well sealed, and ground pressure is low, suitable for soft ground. Cabin and controls: Options for open or enclosed cabin with ROPS/FOPS protection, wide visibility, ergonomically designed seat and control levers, and integrated instruments for self-diagnosis and alarms. Maintenance convenience: Side-flip engine hood allows easy access to filters and oil checkpoints, key components are well protected, and hydraulic line layout is rational, reducing leakage risk. Core scenarios: Excavation of urban pipelines, community renovation, landscaping, farmland irrigation, small-scale demolition, indoor dismantling, and other confined space operations. Operational advantages: Small turning radius for efficient work between buildings and in basements, compatible with standard bucket, narrow bucket, breaker, log grapple and other attachments, offering high versatility.