The key element of choosing a second -hand excavator:
Clarify project requirements
Common considerations are:
Scope and depth of work: determine the depth and scope of work of the excavator. If you work in a deeper ground, you need to choose excavators with a large work depth and long arm.
Operation type: Different excavation tasks have different requirements for the configuration of the machine.
Terrain environment: If you work in a small space or mountain, you can choose a small or mini excavator; in a flat and open place, large excavators are more suitable.
Determine the appropriate tonnage and model
Small excavators (1-6 tons): suitable for narrow working environment, such as urban construction, garden greening, etc.
Medium-sized excavators (6-20 tons): Widely used in infrastructure construction, earthwork operations, etc., and have good operating flexibility.
Large -scale excavators (more than 20 tons): suitable for heavy projects such as mining mining and large -scale infrastructure.
Choosing a suitable tonnage can be determined by evaluating the scale, construction speed, and soil volume.
Check the working hours of the excavator
The number of working hours for second -hand excavators is an important indicator for evaluating its use. Generally speaking:
Below 5000 hours: The machine is generally in a better state, less wear, and the performance is still better.
5000 hours to 100,000 hours: The machine may have some wear, and the status of each important component needs to be checked, such as engines and hydraulic systems.
More than 10,000 hours: Some problems may occur, you need to check carefully, consider maintenance costs and service life.
In addition to the number of working hours, the age of the equipment must also be considered, and the aging components may also affect the performance of the machine.
Check the maintenance record of the machine
Maintenance records are one of the importance of evaluating second -hand excavators.
Good maintenance records means that the machine has been regularly inspected and maintained, which will greatly reduce the probability of faults in the equipment. The seller can be required to provide detailed maintenance records, including replacement of hydraulic oil, engine oil, filter, and replacement of tracks.
Check the appearance and structure of the machine
Structural parts inspection: Including buckets, arms, rotating platforms, tracks, etc., check whether there are cracks, bending or severe wear.
Body examination: Check whether there are obvious collision marks, rust, paint fall, etc.
Hydraulic system: Check whether the hydraulic pipeline has oil leakage and whether the hydraulic oil is clean.
Confirm the brand and after -sales service
The preservation and maintenance costs of second -hand excavators in different brands in the market are different.
Choosing well -known brands (such as Caterpillar, Volvo, Hitachi, Liu Gong, etc.) can usually be more secure. The supplies of these brands of equipment in the market are more sufficient, convenient for maintenance, and good technical support and after -sales service Essence
Check the states of the hydraulic system and engine
Hydraulic system: Hydraulic system is one of the core parts of the excavator. Check whether there are oil leakage, whether the oil is clean, and whether the hydraulic pump and hydraulic cylinder are abnormal.
Engine: The engine is the power source of the excavator. Check whether the engine has abnormal noise, the exhaust is normal, and how the engine oil is.
Understand price and market conditions
Before buying, learn about the market price of Second-hand excavator equipment. Too low prices may mean that the machine has a large hidden danger, and the high price may not be cost -effective. Through multi -party comparison and inquiry, ensure reasonable prices.
On -site test machine
You can check when the test machine:
Whether each component runs smoothly;
The stability and the flexibility of the excavator;
Whether the movements such as digging, steering, lifting, etc. are not hindrance.
Buy reliable second -hand equipment
Choosing second -hand equipment suppliers with good reputation and reputation can reduce risks and ensure equipment quality.
According to comprehensive factors such as project scale, budget, and working environment, a second -hand excavator suitable for your own project is selected. Before buying, learn more about the working status of the machine, maintenance records, brand and after -sales service, etc. At the same time, on -site test machines are performed to ensure that the equipment can complete the project task in a good working state.