This machine is a newly developed large product, used to crush the coal in power plant with the characteristics of large capacity, up to 200-2000T/H, even discharging particles, and the machine shell can be opened hydraulically to make the maintenance easily. It is equipped with a supervision disk to measure the electric data, main bearing temperature and vibration value, make the running more safe and reliable. It also has wind volume adjuster to change the wind of inlet from emitting into inhaling, which make sure it can deduct collectively to prevent environmental pollution. The synchronous adjustment mechanism can adjust the discharging particles and protect the machine simultaneously.