The solution of strong vibration during the operation of the Pulverizer 1 problems occurred in the installation of Hammer. In the process of inspection, repair and assembly, when the hammer plate is reversed, only a few pieces of hammer plate are changed, which will cause strong vibration when the crusher is running. The solution is to smash all the hammer inside the machine together with a face-off. 2 The weight of the two groups of hammer pieces is not balanced. When the weight difference is more than 5 grams, the mill operation will be strong vibration. The solution is to adjust the position of the hammer piece to ensure that the weight difference between the two groups is not more than 5 grams. 3. The Hammer Blade is not flexible enough. If the hammer is stuck too tight, it will shake the fuselage too much if it is not thrown off during operation. The solution is to stop the machine, the hammer with hand rotation, so that the hammer flexible rotation. The other parts of the rotor are not balanced in weight. The solution is to check each part separately and adjust the balance. 5 spindle bending. When the spindle is bent, it will cause the fuselage to tilt, which will cause strong vibration during operation. The solution is to correct the spindle or replace the new spindle. Bearing clearance exceeding limit or damaged. The solution is to replace the new bearings. 7 loose foot retaining nut. This will cause the mill operation shaking, causing a strong vibration. The solution is to tighten the nuts.