1. Consider the Working Conditions

• •​​Terrain and Ground Conditions​​
• •If you mainly work on soft ground such as mud, sand, or wet soil, you need an excavator with good traction and stability. Wheeled excavators with large - sized tires and a low - center - of - gravity design are more suitable. For example, in a swampy construction site, excavators with special tires or track - like tire designs can prevent sinking.
• •For working on hard surfaces like concrete or asphalt, standard wheeled excavators can usually meet the requirements. But if you need to move frequently on these hard surfaces, pay attention to the wear resistance of the tires.
• •​​Working Space​​
• •In narrow construction sites, such as urban alleyways or indoor renovation projects, choose a compact - sized wheeled excavator. These excavators have a smaller overall size and better maneuverability, allowing them to operate flexibly in limited spaces.
• •For large - scale open - pit mining or large - area earthmoving projects, you can consider larger wheeled excavators with higher power and larger buckets, which can improve work efficiency.

2. Evaluate the Performance Parameters

• •​​Power and Engine​​
• •The power of the engine determines the working ability of the excavator. Higher - power engines can provide stronger digging and lifting forces. When choosing, consider the power requirements of your expected work tasks. For example, if you often need to dig hard rock or large - volume soil, a excavator with a more powerful engine is needed.
• •Also, pay attention to the fuel efficiency of the engine. A fuel - efficient engine can reduce operating costs in the long run.
• •​​Bucket Capacity and Digging Force​​
• •The bucket capacity affects the amount of soil or materials that can be excavated at one time. Choose an appropriate bucket capacity according to the scale of your work. For small - scale projects, a smaller bucket may be sufficient, while for large - scale earthmoving, a larger bucket is more efficient.
• •Digging force is crucial for the excavator's ability to dig into the ground. A larger digging force allows the excavator to dig more easily in hard soil or rock layers. Check the manufacturer's data on digging force when making a choice.

3. Check the Mobility and Maneuverability

• •​​Wheels and Tires​​
• •The type and quality of wheels and tires have a great impact on the mobility of the wheeled excavator. High - quality tires with good grip can ensure the excavator's stability on different terrains. Some tires are designed specifically for off - road use, which can provide better traction on rough roads.
• •The wheelbase and track width of the excavator also affect its maneuverability. A shorter wheelbase and narrower track width can make the excavator more flexible in turning and moving in narrow spaces.
• •​​Travel Speed​​
• •Consider the travel speed of the excavator, especially if you need to move frequently between different work sites. A higher travel speed can save time and improve work efficiency. However, a balance should be struck between speed and stability.

4. Look at the Brand and After - sales Service

• •​​Brand Reputation​​
• •Choose excavators from well - known and reputable brands. Well - known brands usually have more advanced technology, better quality control, and more reliable products. You can refer to industry evaluations, user reviews, and awards to understand the brand's reputation.
• •​​After - sales Service​​
• •Good after - sales service is essential for the long - term use of the excavator. Check if the manufacturer or dealer can provide timely maintenance, repair services, and a sufficient supply of spare parts. A reliable after - sales service network can ensure that your excavator can be repaired and maintained in a timely manner when problems occur, reducing downtime.