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Some matters needing attention of NSK bearing grease is introduced to choose - bearing knowledge

by:Waxing     2020-05-25
NSK bearings in order to better play to the best condition, the stand or fall of NSK bearing grease selection directly related to the stable operation of the equipment. NSK bearing grease choice must consider from the following aspects: 1. Rust resistance corrosion inhibitor is best can not dissolve in water. Grease should have good adhesion, NSK bearings used in the oil must have antirust effect. And a layer of oil film can be formed in the steel surface. 2. Mechanical stability to leak. During normal operation, oil will become soft in machining. Grease can by bearing to NSK bearings. If the mechanical stability of the oil is insufficient, operation process, can make the structure of the soap grease mechanical disruption of oil was damage, and loss of lubrication. 3. NSK bearing oil seal operation process, NSK bearing oil seal is necessary maintenance and lubricant from the barrier of external contamination. Regardless of NSK bearing inner sundry or moisture can penetrate, in case of causing damage to it. The correct device goes to NSK bearings is play an important factor of the longest service life. At the same time, must pay attention to the purity of the bearing, NSK bearings of correctness and choose the proper installation and maintenance tools. In addition, the bearings must prevent contamination by pollutants and moisture, and ensure the right device and lubrication. Therefore, NSK bearings with column design, the status of the oil seal, type of lubricants and lubrication cycle, and special care are the same and important role. 4. Mixed oil if two incompatible oil mixture, never can't compatible to the oil to mix. Usually will soften its consistency, finally may NSK bearing damage caused by oil easy to loss. If you don't know which bearing the original use of grease, is required to completely remove NSK bearings inside and outside of the old oil, can add new grease. 5. The classification of the grease lubrication grease consistency and ability is affected by the working temperature of NSK bearings operating under a certain temperature must choose under the same temperature has the correct consistency and good lubrication effect of oils and fats. Oil is made of different working temperature range can be roughly divided into low, medium temperature and high temperature with grease. At the same time, mainly according to the temperature and the working conditions to distinguish: oil can be classified according to its allowable working temperature. There is a certain type of oils and fats known as resistance to squeeze or extrusion and add molybdenum disulfide, at the same time, among them with additives to enhance the strength of the lubricating oil film. 6. Select important factor in choosing a grease of grease, if the wrong choice NSK bearing grease all preventive measures is useless. Base oil viscosity in the working temperature is it is important to be able to provide adequate lubrication effect of viscosity is mainly affected by temperature, the temperature rise and fall, when the temperature drop is increased. Therefore, it is necessary to know the working temperature of base oil viscosity. Machinery manufacturers are usually specified use some grease, however most of the standard grease applicable range is very wide. Such as vibration and the direction of the main shaft is horizontal or vertical. Cooling condition; The sealing effect; Peripheral environment. The following important factors is that the choice of grease: mechanical type; NSK bearing type and size; Working temperature; Working load; Speed range; Working condition.
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