The operating range of an excavator (including digging radius, digging depth, unloading height, etc.) is closely related to its model, which is usually classified based on the total machine weight (tonnage class). Excavators of different tonnage classes are optimized for different working conditions in their design, resulting in significant differences in their operating ranges. Below, starting from common tonnage classifications, we will detail the characteristics of their operating ranges and typical application scenarios:

I. Mini Excavators (≤ 6 tons)

Core parameters of the operating range (taking the 3-ton class as an example):

• Maximum digging radius: 3-5 meters

• Maximum digging depth: 2-3 meters

• Maximum unloading height: 2-3.5 meters

• Swing radius (tail): 1.5-2.5 meters (ultra-small swing design, suitable for narrow spaces)

Differentiating features:
Compact in size, with an extremely small tail swing radius (some models can achieve "zero swing"), enabling operation in narrow areas such as indoors, courtyards, and tunnels. The digging range is limited, but the flexibility is extremely strong. It can be equipped with small attachments such as breakers and grapples, suitable for fine operations (such as garden trimming, indoor demolition, small foundation pit excavation).

II. Small Excavators (6-15 tons)

Core parameters of the operating range (taking the 10-ton class as an example):

• Maximum digging radius: 5-8 meters

• Maximum digging depth: 3-5 meters

• Maximum unloading height: 4-6 meters

• Swing radius (tail): 2.5-3.5 meters

Differentiating features:
It balances flexibility and operational capability, with a digging range covering the needs of small and medium-sized projects. It can be used for rural road construction, farmland improvement, small building foundation pit excavation, etc. It can be transported via ordinary roads without special permits, and has strong adaptability.

III. Medium Excavators (15-30 tons)

Core parameters of the operating range (taking the 20-ton class as an example):

• Maximum digging radius: 8-12 meters

• Maximum digging depth: 5-7 meters

• Maximum unloading height: 6-8 meters

• Swing radius (tail): 3.5-4.5 meters

Differentiating features:
It is the "main model" in engineering construction, with an operating range covering most general working conditions. The digging depth and radius are sufficient to meet the needs of urban pipeline laying, foundation pits of high-rise buildings (shallow foundation pits), mine stripping, etc. It can be equipped with various attachments such as hydraulic shears and breakers, and has extremely strong versatility.

IV. Large Excavators (30-80 tons)

Core parameters of the operating range (taking the 50-ton class as an example):

• Maximum digging radius: 10-16 meters

• Maximum digging depth: 7-10 meters

• Maximum unloading height: 8-12 meters

• Swing radius (tail): 4.5-6 meters

Differentiating features:
Designed for large-scale projects, the operating range is significantly expanded, especially in terms of depth and heavy-load capacity. It is mainly used for large-scale mine mining, water conservancy projects (such as reservoir excavation), and deep foundation pit operations in large infrastructure projects. It requires special trailers for transportation and has high requirements for the bearing capacity of the working site (to avoid collapse).

V. Extra-large Excavators (≥ 80 tons)

Core parameters of the operating range (taking the 100-ton class as an example):

• Maximum digging radius: 15-20 meters

• Maximum digging depth: 10-15 meters

• Maximum unloading height: 12-18 meters

• Swing radius (tail): 6-8 meters

Differentiating features:
Designed specifically for extra-large mines (such as open-pit coal mines, metal mines), the operating range is "giant", with a single digging volume of up to several cubic meters. It requires supporting large transport vehicles (such as dump trucks) to work together, and has extremely high requirements for the site and infrastructure (such as special roads, refueling systems), only used for extreme heavy-load working conditions.

Summary: Comparison Table of Core Differences

Extended Description:

In addition to the tonnage class, the "boom + stick length" of the excavator also affects the operating range (for example, extended arm models can increase the digging radius and depth but will reduce the digging force). The actual selection needs to be comprehensively judged based on specific working conditions (such as whether deep digging is required, whether there are space constraints).