The failure reasons of vertical mill bearings and measures

The failure reasons of vertical mill bearings and measures 2020 - 09 - Has been widely used in grinding materials such as raw materials, clinker, slag and coal grinding, can say, it is of great significance to the cement industry production of saving energy and reducing consumption. Roller bearing damage reason 1, bearing under the condition of the poor quality of the cement industry, the poor quality of bearing, vibration increase obviously, and the feed rate is low, it is easy to result in bearing damage. In order to reduce the damage of bearing, be sure to use good quality bearings, avoid unplanned downtime caused by bearing problem. 2, the roller of lubricating oil quality and quantity of the shortage of the lubricating oil quality is poor, leading to poor lubrication effect, will inevitably make between bearing and race cannot form effective lubrication film, when the temperature rises, the color of the oil with black, the lubrication effect will be even worse, it will also cause bearing operating temperature, seriously reduce the service life of bearing. The shortage of the oil at the same time, can also lead to cannot form the lubrication film between bearing and the raceway, the bearing is a kind of damage, the lack of lubricating oil at the same time also can make serious friction between roller and bearing, will produce a lot of heat, cannot be distributed in a timely manner. In turn affect the service life of the equipment operation efficiency and bearing. 3, into the grinding material distribution when material material thickness, mill roll an increase of power, and the wear is more serious, also can cause the accumulation of material, cause the roller bearing can produce high load operation, cause the damage of the bearing. Roller bearing damage prevention measures 1, assembly methods bearing before installation, check if the quality pass, using good quality bearings, the loss of the decrease of the intermediate. When installation should not be too tight and too loose, too tight, will lead to wear and tear, but also reduce the clearance between the raceway and result in higher temperature, reduce the service life. At the same time, when bearing damage, too tight will cause its hard to be removed from the roll grinding, work for vertical mill bring further difficulty. Too loose, will cause the gap between grinding way, between roller and bearing cannot be connected. When the roller rotation, often can appear the phenomenon of occlusion, killed on each other and removed from the grinding roller bearings can't again, roller is likely to be damaged. Assembly, the first is the size of the bearing should be testing, testing after must pay attention to check whether it is right, make sure it is completely, can prepare the next step of operation; Then certain protection processing, guaranteed not to enter the pollutants such as dust watermarks. Moment in the process of assembly, pay attention to the time and temperature, different roller the time required to temperature is different, the heat produced by the oxidation of cortical, must be clean. After completion of assembly, should also continue to detect, prevent enlargement of the gap between bearing and the outer diameter of, serious effects on the roller. 2, lubricating oil quantity wants enough, better lubricating oil category, fine quality to achieve certain benefits, had better use high viscosity, stability good industrial oil. Want to lower the temperature of the bearing, at the same time to adjust to the appropriate temperature and increase oil pressure, and increase oil amount, reduce the running-in between roller and bearing, prevent the damage of the bearing. 3, make sure that the roller sealing roller seal will also produce very big effect on the bearing. Be sure to use a special rotating seal oil seal, not only can ensure the lubrication, also can prevent the dust, stain and dust into them. If poor sealing effect, gas from them into the seal area, and then enter the bearing area, cause unnecessary damage, the bearing lubrication effect also reduces, even lead to raceway surface falls off phenomenon, to increase the number roller maintenance. 4, regular maintenance for roller device, not only should adopt good configuration, need to get maintenance, can reduce the occurrence of the problem. Mill device used for a long time, the corresponding parts in roller, inevitably there are a lot of dust and dirt, even have some scrap iron, must regularly dispatching staff to clean and maintain. （ Source: intelligence and operational tianjin technology co. , LTD. )