High temperature by the performance of the roller bearing grease

Bearing, safe and durable. Self-aligning roller bearing electricity department author on June 29th for your explanation: cut roller bearing high temperature performance of spherical roller bearing grease lubricating oil overheating direct harm is accelerated oxidation, and produces acid, it is important to note that if the local high temperature lubricating points, can cause oil oxidation, and gradually spread. Local high temperature can be caused by poor bearing installation, also may be by excessive or grease, inadequate inferior oil, vibration and overload. The oxidation of the grease, the color will darken, acid will cause thickener break, cause the base oil flows from the thickener. Is actually thickening of lubricating oil, grease thickener like a sponge adsorption on base oil, to avoid too much loss, so the lubrication is mainly by the lubricating oil. If the base oil is missing, has lubricating oil on the surface, lubrication ability is almost gone. Cut the performance of the roller bearing grease: high temperature in the process of oxidation, can observe the change of the grease consistency, such as hardening or thinning, oil flow, etc. General is to use lithium base grease thickener and mineral base oil, in order to meet the general condition of lubrication requirements. If there is a high temperature ( C) , lubricating oil will accelerate oxidation, when approaching degrees Celsius, the performance of the grease in the ordinary oil oxidation, under the condition of lubricating oil will be better, high-grade synthetic oil and the wide use of thickening agent, such as polyurea, compound lithium, other types of complex calcium sulfonate thickener. This grease is generally better than normal temperature and high temperature grease. Self-aligning roller bearing in the use of grease temperature range, the characteristics of the grease is different, as I mentioned earlier, if grease depends mainly on the basis of the lubricating oil, base oil has good viscosity-temperature properties ( High viscosity index) In the process of temperature change, so, some relatively stable viscosity. The classification of the base oil is to press, there are five types of classification at present, users need to know when buy of grease base oil. Although was mostly base oil and grease thickener, but the base oil and the influence of the temperature of the thickener level is not the same, in general, base oil by the influence of the temperature change is bigger, concentration of the thickener to drop point, change the consistency of is relatively slow. As a result, the performance of high temperature bearing grease: it is necessary to understand the basis of oil, in choosing the performance of the grease. Bearing comfortable and durable, )