The Carter excavator is a heavy machinery and equipment recognized by the industry, with a variety of models and obvious tonnage differentiation. To understand the specific tonnage division of Carter excavators, we must first clarify the corresponding tonnage range of different models. For example, the Carter 320D excavator is a medium-sized machine, usually between 20-25 tons, while the Carter 349F is a representative of large excavators, which can reach more than 40 tons. Carter excavators are mainly divided into five categories according to the tonnage: micro, small, medium, large and super large. Miniature excavators are generally between 1-6 tons and are suitable for small space operations, small excavators are in the range of 6-15 tons, suitable for a variety of small and medium-sized projects, medium-sized excavators such as the aforementioned Carter 320D series, widely used in various infrastructure construction, large and super-large excavators such as Carter 349F, etc., are the main models for mining and large-scale earthwork projects. Therefore, when purchasing or leasing a Carter excavator, it is important to correctly identify and select the corresponding tonnage to ensure that it can meet the needs of actual working conditions, improve work efficiency and reduce operating costs. In short, understanding the tonnage classification of Carter excavators can help us accurately locate the equipment use scenarios and achieve the best match between construction machinery and construction needs.