【 Premium Recommendation 】 Premium No. 5: Sumitomo 480-6 Excavator from 2021 This 2021 Sumitomo 480-6 excavator is one of the highly praised heavy-duty excavators in the market. Since its commissioning, this machine has accumulated a working time of only 3,000 hours. Its overall usage frequency is relatively low. With proper maintenance, the mechanical condition is almost the same as that of a new car. Whether in terms of appearance or performance, this is a very worthwhile second-hand excavator to purchase. In terms of the power system, this Sumitomo 480-6 is equipped with the highly efficient and energy-saving Cummins QSM11 engine, with a maximum power output of 270kw at 1800rpm. It not only offers strong power but also has excellent fuel economy. Even under heavy-load operation conditions, it can maintain stable output, significantly reducing operating costs. Meanwhile, this engine also features excellent low-temperature starting performance and high-altitude adaptability, ensuring the machine can operate normally in all kinds of harsh environments. In terms of the hydraulic system, the Sumitomo 480-6 is equipped with an advanced CLSS closed center load sensing system. By precisely controlling the flow distribution, it achieves r2025-12-19 15:05:18