Old drivers who have operated excavators for many years may have encountered unusual noises in the ultrafine vertical mill. What is the cause of the noise in the ultrafine vertical mill? Today we will analyze the causes and solutions of noise in the ultrafine vertical mill from five aspects.Air Intrusion Of Ultrafine Vertical MillWhen air intrudes into the ultrafine vertical mill, it has a large volume in the low pressure area. When it enters the high pressure area, it is compressed and the volume suddenly reduces. When it flows into the low pressure area, the volume suddenly increases. As a result, the volume of the air bubbles suddenly changes, i.e. explosion, which causes noise.Solution: Usually an exhaust device is set on the hydraulic cylinder to exhaust.Another common method is to exhaust the actuator several times over the entire journey quickly after driving.