The main function of the central cutter bit is to cut the soil at the center of the cutter  head, and its function is similar to that of the scraper. However, since the two sides of the  central cutter are usually designed at a specific angle, a conical excavation surface will be  formed during excavation, which helps the equipment achieve precise centering. Meanwhile,  according to differences in geological conditions, the cutting edge of the central cutter will  also be designed into different shapes.