6 fatores-chave aos quais prestar atenção ao comprar uma escavadeira Sany usada

When purchasing a used Sany excavator, you need to pay attention to several key factors to ensure the performance, reliability and return on investment of the equipment. The following are 6 key factors to pay special attention to when purchasing a used Sany excavator:

1.Age and working hours of the equipment

Age: The age of the excavator directly affects its remaining service life. When purchasing, you should first understand the year of production of the equipment to ensure that it meets your own needs.
Working hours (engine working time): Working hours are an important indicator for evaluating the degree of wear and tear of equipment. Generally, the life of construction machinery is calculated by working hours. The higher the working hours, the greater the workload of the equipment and the more severe the wear and tear of parts.
Recommendation: Try to choose equipment with lower working hours and shorter service life, which can reduce the risk of future repairs.

2.Repair and maintenance records of the equipment

Maintenance records: It is very important to understand the past repair and maintenance records of the equipment. A good maintenance record shows that the equipment has been regularly maintained and maintained, which is conducive to keeping the equipment running efficiently.
Maintenance records: Check whether the equipment regularly replaces routine maintenance items such as hydraulic oil, engine oil, and air filter. These records reflect the maintenance status of the equipment.
Recommendation: Try to choose equipment with complete maintenance and repair records and no major failure history. If the equipment has no maintenance records or is poorly maintained, there may be a higher risk.

3.Inspection of the hydraulic system

The hydraulic system is one of the core components of the excavator. The quality of the hydraulic oil and the working condition of the system directly affect the performance and stability of the equipment. When purchasing second-hand equipment, the following points should be checked:

Quality of hydraulic oil: Check whether the hydraulic oil is clean and free of impurities. Poor quality or contaminated hydraulic oil may cause hydraulic system failure.
Hydraulic pipelines and joints: Check whether the hydraulic pipeline has oil leakage, whether the joints are loose, and whether the seals are intact.
Hydraulic system response: During the test run, test whether the hydraulic system moves smoothly and whether there is hysteresis or failure.
Recommendation: If the hydraulic system leaks or responds poorly, the oil pump, valve or pipeline may need to be replaced, which will increase the cost of subsequent use.

4.Engine condition inspection

The engine is the most important power source for the excavator, and it is crucial to ensure that the engine performs well. The following aspects should be paid attention to during the inspection:

Starting performance: Check whether the engine starts smoothly and whether there are any abnormal sounds.
Exhaust condition: Is there blue or black smoke in the exhaust? Blue smoke usually means that there is an internal combustion problem in the engine, and black smoke may indicate a fuel system problem.
Engine working status: Monitor the engine temperature, pressure, oil level and other data through the dashboard to check whether they are normal.
Recommendation: If the engine is difficult to start, the exhaust is abnormal or the power is insufficient, it may mean that the engine is worn or faulty, and additional maintenance costs are required.

5.Inspection of crawler and travel system

The crawler and travel system are directly related to the mobility and stability of the excavator. The following aspects should be paid attention to during the inspection:

Wear degree of crawler: Check the wear of the crawler plate, whether there are cracks or defects, and whether there are signs of excessive wear.
Travel motor and drive system: Check the working condition of the travel motor and drive system, whether the travel is stable, and whether there are abnormal sounds or vibrations.
Track tension: Ensure that the track is properly tensioned. Too loose or too tight will affect the travel performance of the equipment.
Suggestion: Damage to the crawler and travel system may require higher repair costs. When checking, pay special attention to the wear and tension of the crawler to avoid purchasing equipment with serious problems.

6.Appearance inspection and structural parts

Appearance inspection is the first step to understand the overall condition of the equipment. By checking the appearance of the equipment, you can preliminarily judge whether it is regularly maintained and whether it is seriously damaged. Focus on the following aspects:

Frame and bucket: Check whether the frame and bucket of the excavator are cracked or deformed. Damage to the appearance may mean that the equipment has been hit hard during the construction process, which may affect the safety of its overall structure.
Operating lever and control system: Check the sensitivity of the operating lever and control system to ensure that there is no jamming or insensitivity.
Cab and dashboard: Make sure the interior of the cab is clean and the dashboard has no alarm or abnormal display.
Suggestion: For equipment with serious appearance damage or structural deformation, it may mean that the equipment has experienced a serious accident and needs to be purchased with caution.

When buying a escavadeira Sany usada, paying attention to the above 6 key factors will help you make a more informed decision. Try to choose equipment that is relatively new, well-maintained, and has no major faults. This will help improve work efficiency and reduce the risk of later repairs. At the same time, conduct test runs and inspections to ensure that the equipment is operating normally. If possible, it is best to ask a professional mechanic or technician to evaluate the condition of the equipment together to avoid purchasing second-hand equipment with many hidden problems.