Doosan

The second-hand Korea original Doosan DH150W-7 wheel excavator is fitted with Doosan self-developed DB58TIS six-cylinder inline water-cooled turbocharged diesel engine, the core power assembly exclusive to Doosan medium wheeled excavators. Its official rated power reaches 96kW under 2200 rated rpm, with a total engine displacement of 5.86L, fully matching the demand of municipal earthmoving, pipeline construction and light demolition work. The machine carries a 240-liter large-capacity fuel tank, which can support continuous operation for 24 hours without frequent refueling under medium-load working conditions. According to real construction test data, the average hourly fuel consumption under standard urban earthwork load is controlled between 8 and 10 liters; even under heavy-load digging and rock breaking operation, the fuel consumption will not exceed 12 liters per hour, which is 10% to 15% lower than competing wheel excavators of the same tonnage, greatly cutting daily operating costs for overseas contractors.

This engine adopts mechanical fuel injection and independent speed regulation structure, with strong anti-fouling ability, and can adapt to low-grade diesel widely used in Africa, Southeast Asia and the Middle East without frequent blockage of fuel injectors. The factory design service life of the engine is up to 12,000 working hours. For our low-hour stock machines within 6,000 working hours, the cylinder liner, piston and crankshaft wear are within 0.02mm of the factory standard, and there is no blue smoke or oil leakage during startup. Before shipment, we will fully replace engine oil, diesel filter, oil filter and air filter, and conduct a full power output test to ensure the engine power attenuation is less than 3%. In addition, the water circulation cooling system of DH150W-7 has a large-area radiator, which can maintain stable operating temperature even under high-temperature construction environment above 40℃, effectively avoiding engine cylinder pulling failure caused by overheating, and reducing the frequency of maintenance and downtime for overseas users.

The Doosan DH150W-7 is a mainstream 13-ton wheel excavator commonly named 15-ton wheel digger in the global construction machinery market, with complete and reliable digging performance data that perfectly matches urban engineering demands. It is equipped with a standard 0.57m³ light earthmoving bucket, and customers can optionally upgrade to 0.45m³ rock bucket or 0.65m³ wide landscaping bucket according to project needs. The bucket breakout force reaches 118KN, and stick breakout force is 86KN, with sufficient power to dig clay, loam and broken gravel layers, and cooperate with hydraulic breakers for small concrete crushing work. Its core operation dimension parameters are as follows: maximum excavation radius 7510mm, maximum horizontal digging depth 4880mm, maximum vertical excavation depth 4210mm, maximum excavation height 8030mm, and maximum unloading height 5760mm, which can easily complete pipeline trenching, road foundation excavation and low-height muck loading onto small transport trucks.

The machine’s rotation speed is 11.5rpm with built-in rotation buffer, so the rotation action is stable without severe shaking when loaded. Its gradeability reaches 30° (58%), capable of climbing gentle slopes of municipal green belts and village roads. The biggest competitive advantage of this wheel excavator lies in its traveling performance, with a maximum self-driving speed up to 37km/h, far faster than crawler excavators. Contractors do not need to rent flatbed trucks for short-distance transfers within 50 kilometers, saving high transportation fees and waiting time. Different from crawler models, rubber tires will not scratch asphalt roads, concrete pavements and green lawns, eliminating extra road repair costs after construction. It is widely applied in city road renovation, underground water and gas pipeline burial, residential area landscaping, small building demolition, farmland consolidation and rural road widening projects, and is the preferred construction equipment for small and medium engineering teams in Southeast Asia, Africa and the Middle East. Its overall width is only 2494mm, allowing flexible operation in narrow urban alleyways and crowded residential plots where large crawler excavators cannot enter.

The Doosan DH150W-7 adopts a full set of original Doosan load-sensing independent hydraulic system, including self-developed variable displacement main hydraulic pump and integrated multi-way distribution valve, which is the core guarantee of smooth and efficient operation for this wheel excavator. The main system working pressure is stably maintained at 32MPa, and the load-sensing technology can automatically adjust oil supply volume according to operation load: it reduces oil flow under light-load floating actions to cut fuel consumption, and instantly increases pressure and flow during heavy digging to avoid power lag. The linkage of boom, stick and bucket composite actions is coherent without jamming or slow response, solving the common sluggish operation problem of old wheel excavators from other brands. All hydraulic cylinders of the machine are fitted with imported wear-resistant polyurethane sealing rings; for our well-maintained stock machines below 6,000 working hours, there is almost no internal leakage of oil cylinders, and no external oil seepage on pipelines and valve blocks. Before export shipment, we will replace all aging hydraulic rubber tubes and sealing kits to ensure zero oil leakage during customer’s arrival inspection.

In terms of global spare parts supply, Doosan has built complete machinery spare parts warehouses covering Southeast Asia, West Africa, East Africa, the Middle East and Latin America, with sufficient inventory of core hydraulic accessories including main pumps, distribution valve blocks, cylinder sealing parts, hydraulic oil pipes and quick connectors. Local machinery repair shops in most overseas construction countries can purchase matching original or compatible aftermarket spare parts within 2 to 5 working days, without long waiting cycles for customized parts. Compared with Japanese brand wheel excavators with scarce spare parts, the maintenance cost of DH150W-7 is reduced by about 25%. In addition, the hydraulic system of this model has a simple structural layout, easy disassembly and inspection, and local maintenance workers without professional Doosan training can complete daily hydraulic oil replacement, filter replacement and minor overhaul work, greatly lowering the technical threshold of after-sales maintenance for overseas buyers.

The official operating weight of the Doosan DH150W-7 wheel excavator is 12900kg, classified as a 13-ton medium wheel excavator, while the market uniformly calls it 15-ton wheel digger for unified tonnage classification habits. Its complete overall dimension data comes from official factory drawings: total machine length 9535mm, overall width 2494mm, overall height 3640mm, standard boom length 4300mm and standard stick length 2500mm. The narrow 2494mm body width is a core highlight for urban construction, enabling it to pass through narrow community roads and village lanes that 2.9-meter-wide crawler excavators cannot access. The machine is equipped with 8 standard engineering rubber tires with thick anti-wear patterns, and the front axle supports steering with a small turning radius, achieving flexible U-turn operation in compact construction sites.

Compared with same-tonnage crawler hydraulic excavators, the wheeled DH150W-7 has four irreplaceable core advantages for overseas municipal contractors. First, its maximum self-travel speed hits 37km/h, realizing free self-transfer between multiple construction sites without renting flatbed transport trucks, which can save hundreds to thousands of US dollars in short-distance transportation costs every month. Second, rubber tires will not damage asphalt roads, concrete pavements and green lawns; many city engineering tenders explicitly restrict crawler machines to avoid road surface damage, while wheeled excavators can work on all hardened pavements without post-construction pavement repair costs. Third, the ground contact pressure of rubber tires is far lower than steel tracks, allowing stable operation on soft soil, lawns and temporary mud construction sites without sinking. Fourth, the wheel chassis has lower daily wear loss: steel tracks of crawler machines need regular replacement of track shoes, rollers and sprockets, while the tire maintenance cycle of DH150W-7 exceeds 3,000 working hours, and tire replacement cost is much lower than full chassis maintenance of crawler models. For buyers mainly engaged in urban municipal, landscaping and pipeline projects, the comprehensive use cost of DH150W-7 is 20% lower than equivalent crawler excavators within three years of service.

The official factory design service life of the Doosan DH150W-7 wheel excavator reaches 12,000 working hours, and the wear degree of core components such as engine, hydraulic pump and chassis is directly proportional to the accumulated working hours, which determines the later maintenance cost for overseas buyers. After years of export sales data statistics, our most cost-effective stock machines for global customers are units with 2,000 to 6,000 working hours. Within this hour range, the internal wear of engine cylinder components, hydraulic pump plungers and chassis walking gears is controlled below 10% of the wear limit, and the large overhaul cycle of the whole machine can be delayed for 3 to 5 years after purchase, avoiding expensive major repair costs in the short term. Machines over 8,000 working hours have obvious wear on core parts, and frequent replacement of accessories will increase long-term operation costs, so we do not recommend them for small and medium engineering teams with limited budgets.

We implement a full-item pre-shipment inspection system for all exported DH150W-7 units, covering all core performance parameter testing items. The inspection content includes engine rated power output detection, hydraulic system pressure test, bucket and stick digging force calibration, tire wear thickness measurement, full-speed traveling test, rotation stability test, comprehensive oil leakage inspection of fuel and hydraulic pipelines, and overall chassis welding crack detection. We will sort out a complete paper test report with all original data records and attach it to the shipping documents for customers to check customs and conduct machine acceptance after arrival. Before loading containers, we carry out full maintenance for every machine: fully replace engine oil, hydraulic oil, diesel filter, oil filter and air filter, replace all aging hydraulic sealing rings and rubber tubes, polish and repair the cab body, and test the air conditioning system to ensure normal cooling function. In addition, we can match supporting attachments according to customer project demands, including hydraulic breakers, log grapples and soil rippers, and conduct joint debugging of machine and attachments before shipment. All machines are Korea original second-hand units without assembly replacement of core components, and we support customers to come to our yard to test the machine on site, or provide real-time remote video inspection before placing orders to eliminate quality concerns.