Used Komatsu 300-7
Used for 2786 hours,good condition.The Komatsu 300 – 7, with a SAA6D114E engine, offers powerful performance for complex jobs. It has fast and economic modes, saving fuel in partial – load. Special – treated parts and a large counterweight ensure durability. The cab is spacious, and it has good maintenance features. It’s great for large – scale construction and mining projects.
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Powerful power, high efficiency and energy saving
The Komatsu 300-7 is equipped with the Komatsu SAA6D114E high-power engine. The powerful power enables it to easily cope with various complex working conditions, whether it is hard rock excavation in mining or large-scale earthwork in large-scale infrastructure construction. The engine adopts advanced fuel injection technology and cooperates with the intelligent control system to achieve full combustion of fuel. In addition, this model can choose between the fast mode that prioritizes the workload and the economic mode that prioritizes fuel saving. In the economic mode, when the equipment is in partial load condition, the engine can automatically adjust the output power, reduce unnecessary fuel consumption, reduce operating costs, and achieve a perfect balance between power and energy saving.


Excellent product features, reliable operation
The high-strength structural parts treated with special processes and the large counterweight design make the Komatsu 300-7 sturdy and durable, ensuring safe operation; the spacious cab space, large-size operation display screen, and large-capacity automatic air conditioning provide a good working environment for operators; the radiator design is easy to clean, and the oil-water separator and additional fuel filter are standardly equipped to protect the engine and fuel system and reduce the probability of failure. It is also equipped with an advanced fault diagnosis system for convenient maintenance.


Wide application areas, helping various projects
The Komatsu 300-7 performs well in large-scale infrastructure construction, large construction sites, and various mining operations.

Technical Parameter

Category | Parameters |
---|---|
Product name | komatsu300-7 |
Engine model | Komatsu SAA6D114E |
Product tonnage | 31 tons |
Machine operating weight | 31,200 kg |
Bucket capacity | 1.4 m³ |
Rated power | 180 kW / 1900 rpm |
Travel speed | High speed: 5.5 km/h Medium speed: 4.5 km/h Low speed: 3.2 km/h |
Climbing ability | 70% (about 35°) |
Bucket digging force | 227 kN |
Arm digging force | 171 kN |
Total transport length | 11,140 mm |
Total transport width | 3,190 mm |
Total transport height | 3,280 mm (including top structure) |
Cab height | 3,130 mm |
Minimum ground clearance | 500 mm |
Rear end swing radius | 3,450 mm |
Maximum digging depth | 7,380 mm |
Maximum digging radius | 10920 mm |
Maximum digging height | 10,210 mm |
Maximum unloading height | 7,110 mm |
Fuel tank | 605 L |
Hydraulic oil tank | 188 L |
Engine oil change volume | 35 L |
used kumatsu 300 excavator VIDEO