"Sany 485 Tunnel Arm Second-hand Excavator This second-hand Sany 485 tunnel arm excavator has won the favor of many customers with its outstanding performance and stable working conditions. Its working time is approximately 2,600 hours. For a professional-grade engineering device, this usage duration indicates that it is still in the best working condition and can meet the demands of various complex working conditions. In terms of the power system, this aircraft is equipped with a high-performance engine, ensuring strong power output and smooth operation. It can maintain efficient operation even in harsh environments and handle both uphill and heavy-load operations with ease. Meanwhile, the advanced fuel management system leads to lower fuel consumption and better economy. The hydraulic system is a major highlight of this machine. It adopts the world's leading technology, featuring fast response and precise control. Whether it is operations such as excavation, loading or crushing, it can provide stable and reliable support. In addition, its unique design significantly reduces maintenance costs and extends service life. It is particularly worth mentioning that as a model specifically designed for tunnel construction, it features an 2025-12-12 14:50:35