Mini excavators refer to hydraulic excavators with an operating weight of 1-6 tons, specifically designed for confined spaces and precision operations.
它们的核心能力可概括为“三大专精，多种功能”：首先，采用零尾或短尾回转设计，专为狭小空间作业而生，使其成为老城区狭窄巷道、温室及类似环境的理想之选。其次，通过液压先导控制系统实现专业精准控制，确保操作精细化和高精度。第三，采用低能耗设计，每小时油耗仅为传统中型挖掘机的三分之一。第四，附件兼容性强，可互换使用破碎锤、抓斗等工具，完成十余项作业，有效降低成本。如今，它们已成为城乡基础设施建设的必备工具，能够胜任从乡村宅基地平整到城市管道改造等各种任务。
不同吨位的紧凑型挖掘机挖掘深度差异显著。HT18 和 HT20 分别面向 1.8 吨和 2 吨级市场，满足不同的需求。
The HT18 achieves a digging depth of 2.06 meters, with a digging height range of 0-2580mm and unloading height of 0-1637mm. This fully meets depth requirements for common projects like backyard renovations, greenhouse drainage ditch excavation, and small septic tank construction.
Beyond its fundamental digging capability, the HT18’s core advantage lies in its “agility”: with an overall width of just 1100mm and a tail swing radius of only 790mm, it effortlessly navigates areas inaccessible to conventional equipment, such as beneath grape arbors or through narrow alleys. Powered by either a Kubota D722 or Kopel 192 engine with a rated output of 10.2 kW, it delivers stable performance with low fuel consumption. Equipped with boom swing functionality, it effortlessly digs in tight spots like corners and ditch edges, making it the “cost-effective choice” for small-scale urban and rural projects.
For deeper excavation needs, the 2-ton HT20 excavator extends digging depth to 2.45 meters, with a digging height of 3700mm, vertical digging depth of 2160mm, and extended digging radius of 4370mm. It excels in medium-depth tasks like municipal micro-pipeline laying, small fish pond excavation, and foundation trench digging.
This model’s versatility manifests in three key dimensions: First, robust power from its Japanese Kubota engine delivers 14.1 kW rated power while meeting Euro 5/EPA emission standards, adapting to diverse domestic and international construction environments. Second, superior configuration features imported hydraulic pumps and valves for smooth, fluid operation, complemented by a zero-tail swing design for effortless maneuvering in confined spaces. Third, its attachment compatibility includes pre-installed breaker lines for rapid tool changes, enabling integrated digging, breaking, and drilling operations. This versatility effortlessly handles complex tasks like municipal emergency repairs and rural infrastructure projects.
It’s important to note that digging depth isn’t the sole criterion for selecting a compact excavator. Industry experts emphasize that core metrics like machine dimensions, boom swing radius, attachment adaptability, and fuel consumption also demand attention. For instance, indoor demolition requires a machine height below 2.3 meters, while mountainous terrain prioritizes track ground pressure and gradeability.
专家建议在选择挖掘机时考虑机身尺寸、动臂摆动半径和属具兼容性。HT18 的特点是“紧凑灵活”，而 HT20 则兼具“稳定性和多功能性”，可满足主流的 1-2 吨级作业需求。
