The Carter 390 excavator is a highly respected heavy machinery and equipment in the industry, and its work efficiency and carrying capacity stand out from many similar products. This article will introduce the standard bucket capacity of the Carter 390 excavator in detail. The Carter 390 excavator is equipped with a large-capacity bucket that has been accurately calculated and tested under actual operating conditions, and can generally hold about 3.5 cubic meters of material, and the specific bucket size may vary slightly depending on the operating environment, soil type and configuration options. When purchasing or leasing a Carter 390 excavator, understanding its bucket capacity is critical to planning a construction plan and improving overall operational efficiency. Therefore, we recommend that users choose the matching bucket size according to their own engineering needs to ensure that the performance advantages of the Carter 390 excavator are maximized. Overall, the Carter 390 excavator with its excellent digging force and average bucket capacity of about 3.5 cubic meters shows strong strength in all kinds of large-scale earthwork projects, and is an indispensable and efficient tool in the field of engineering construction.