If the base oils are of the same type (such as petroleum lubricating oils or other same base oils), greases made from different soap bases or thickeners should generally not be simply mixed. For some types of lipids, such as calcium-based grease and sodium-based grease, or lithium-based grease and complex lithium-based grease, etc., they can be mixed with each other and generally do not cause much change in performance and do not affect the use.         However, extreme pressure greases, because they contain various active ingredients, will cause the additives to dry stir when mixed with each other, resulting in poor gel stability or mechanical stability of the grease, affecting its performance. Before mixing different types of fats with each other, the properties of the fats after mixing should be determined. Use only when there is no obvious effect.

        There are many indicators for bearing grease performance requirements, mainly colloidal stability (oil separation), mechanical stability (100,000 shear tests, extended working penetration value), and oxidation stability. These three indicators are combined The result is bearing life.         The grease running in the bearing is damaged by mechanical force, which causes the thickener's fibers to break, shorten, and reduce the ability to maintain the structure of the grease. That is, the consistency changes. If the consistency changes greatly, it will cause The phenomenon of surface loss, and at the same time during operation, the grease will be affected by the increase in temperature. The base oil will be reduced by evaporation or part of the base oil will be reduced due to the colloid destruction of the fat. The oil content of the fat will also decrease. The possibility of oxidative deterioration.         Therefore, for bearing grease, if the content of base oil in the grease is lower than 60% -70% after work (ie, the base oil loses 30% -40% due to evaporation or oil separation), it will reduce or even lose lubrication. Capability causes the bearing to fail to run, and at the same time, the consistency of the fat decreases and oxidizes and deteriorates. It will also affect the running of the bearing.