This machine is mainly applied to grind and polish marble and granite slabs. It is mainly suitable for coarse grinding, fine grinding and polishing marble and granite slabs. Being pendulum which is advanced internationally now days, the grinding heads are controlled by air cylinder to elevate. Their longitudinal and transverse movements are enabled by cycloidal pinwheel reduction motor. Having a PLC programmer inside the electrical cabinet, it can grind the slabs in the way of longitudinal wave, transverse wave and cycle wave. Therefore, it features low cost and high grinding efficiency.