Bearing grease selection will directly affect the stable operation of the equipment, in order to better play the best condition of bearing, bearing grease must be from the following several aspects to consider:
1, anti rust performance Used in bearing grease must have antirust effect, anti rust agent preferably insoluble in water. Grease has good adhesion, and can form a layer of oil film on steel surface.
2, mechanical stability Oil will become soft in the mechanical machining, resulting in leakage. During normal operation, the fat by knocking bearing bearing. If the grease is not enough mechanical stability, operation process, will make the oil soap structure produces mechanical disintegration, resulting in destruction of fat, resulting in loss of lubrication. 3, oil seal The oil seal is necessary to protect bearings and lubricants from external contamination barrier, the bearings during operation, regardless of debris or moisture can penetrate into the bearing, to prevent damage caused by its.
The correct installation and maintenance is the longest play bearing service life of important factors. At the same time, must pay attention to the correct cleanliness, bearing selection and selection of bearing installation and maintenance of appropriate tools. In addition, the bearings must be protected from contaminants and moisture contamination, and ensure the correct installation and lubrication. Lubricants and lubrication cycle design, seal the bearing arrangement, the state, and special care is important and plays the same role.
4, mixed oil Never mix oils should not be compatible, if two incompatible mix oil, usually the consistency will become soft, might end bearing damage due to loss of oil caused by. If you do not know the original bearings used in what kind of grease, you must first remove old bearings inside and outside the oil, to add new oil.
Classification of 5, oil According to the temperature and the working conditions are distinguished: according to their allowable working temperature to classification of oil, oil viscosity and lubricating ability is affected by the operating temperature, bearing temperature in a certain operation must choose the correct consistency and good lubrication effect at the same temperature grease. Oil is produced at different working temperature range, can be broadly divided into low temperature, medium temperature and high temperature grease.
{HotTag} at the same time, there is a type of fat called resistance to extrusion or extrusion and add molybdenum disulfide, at the same time, in which there are additives added to enhance the lubricating oil film strength.
6 important factors, selection of oils and fats If the wrong choice grease all prevention bearing measures in vain, select a grease base oil viscosity, it is able to provide sufficient lubrication effect is very important in the working temperature, viscosity is mainly affected by temperature, it decreased with the increase of temperature, when the temperature drop is that it increased. Therefore, must know the base oil viscosity at operating temperature. Machinery manufacturers are typically specified using some kind of grease, but the scope of most of the standard grease is very wide.
Here are a few important factors in selecting grease: mechanical type; bearing type and size; working temperature; work load; speed range; working conditions, such as vibration and spindle orientation is horizontal or vertical; cooling; sealing effect; the external environment.