Used SEM 921 motor grader road machinery factory price Shangchai engine

The SEM921 motor grader is equipped with an imported Rexroth variable displacement piston pump as standard, which distributes flow on demand and saves energy. Caterpillar's unique proportional priority and pressure compensation control valve (PPPC) makes the machine more sensitive to control and improves the overall performance and efficiency of the machine. The SEM 921 adopts four-wheel drive technology and has excellent control performance, which can easily cope with complex terrain and working environment. It is also equipped with advanced intelligent sensors and electronic control systems, which can realize automatic navigation and automatic control, greatly improving work efficiency.