A bearing-shaft-housing system consists of more than just bearings. Associated components like the shaft and housings are integral parts of the overall system. The lubricant and sealing elements also play a crucial role. To maximize bearing performance, the correct amount of an appropriate lubricant must be present to reduce friction in the bearing and protect it from corrosion. Sealing elements are important because they keep the lubricant in, and contaminants out, of the bearing cavity. This is particularly important since cleanliness has a profound effect on bearing service life. The information is general and applies to most rolling bearings.