山工SEM655D装载机优点有以下几点：1. 强大的动力和扭矩：SEM655D装载机配备了高功率发动机，并具有良好的加速和行驶性能。其功率和扭矩输出可满足各种工况的需求。2. 高效的作业能力：SEM655D装载机的作业能力高，装载能力大。其具有快速的装卸速度和较高的装卸高度，能够提高作业效率。3. 舒适的驾驶空间：SEM655D装载机具有宽敞舒适的驾驶室，配备了舒适的驾驶座椅、空调和音响等设备，提供了良好的操作环境。4. 稳定的运行和操作性能：SEM655D装载机的轮胎采用了独立液压驻车制动系统，具有良好的制动性能和行驶稳定性。其还具有快速换挡的液力传动系统，操作简便灵活。5. 维修保养方便：SEM655D装载机采用了模块化设计，各个部件可以方便拆卸和更换，维修保养工作更加便捷。综上所述，山工SEM655D装载机具有动力强大、作业能力高、驾驶空间舒适、操作性能稳定以及维修保养方便等优点，是一款性能优越的装载机产品。

The advantages of Shankong SEM655D loader are as follows:1. Powerful power and torque:SEM655D loader is equipped with high power engine and has good acceleration and driving performance. Its power and torque output can meet the demands of various working conditions.2. Efficient working capacity: SEM655D loader has high working capacity and large loading capacity. It has fast loading and unloading speed and high loading and unloading height, which can improve the operation efficiency.3. Comfortable Driving Space: SEM655D loader has a spacious and comfortable cab, equipped with comfortable driving seats, air conditioning and audio, which provides a good operation environment.4. Stable Running and Operation Performance: SEM655D loader's tires are equipped with an independent hydraulic parking brake system, which has good braking performance and driving performance. It has good braking performance and driving stability. The SEM655D loader also has a quick-shift hydraulic transmission system, which is easy and flexible to operate. 5. Convenient maintenance: SEM655D loader adopts a modular design, and all parts can be easily disassembled and replaced, which makes the maintenance work more convenient. To summarize, Shankong SEM655D loader has the advantages of powerful power, high working capacity, comfortable driving space, stable operation performance and convenient maintenance.