The capacity of the Carter excavator bucket is a key performance indicator, which directly affects the construction efficiency and operating cost. In different models of Carter excavators, the bucket capacity varies greatly, generally ranging from 0.25 cubic meters to 4 cubic meters. For example, the Carter 307E mini excavator has a bucket capacity of about 0.8 cubic meters, while the large Carter 390F excavator has a bucket capacity of about 4 cubic meters. When purchasing, the number of bucket cubes should be accurately matched according to the actual engineering needs, working conditions and the overall performance of the excavator to achieve the best economic benefits. Understanding and mastering the selection strategy of Carter excavator bucket capacity not only helps to improve the efficiency of equipment use, but also effectively reduces operating costs, which is an important link that practitioners and purchasers in the construction machinery industry cannot ignore. Further, Carter excavators are widely praised worldwide for their excellent durability and high performance, and their bucket design is scientific and reasonable, with high capacity accuracy, whether it is earthwork excavation or gravel loading, it can easily cope with diversified engineering needs. To sum up, when choosing a Carter excavator, it is important to pay attention to the core element of the number of bucket cubes, and make the most appropriate choice in combination with the specific application environment and task requirements.