![]() The most widely used complex grease is lithium based. They are being selected because of their high dropping points and excellent load-carrying abilities.Ĭomplex greases are made by combining the conventional metallic soap with a complexing agent. Lately, complex thickener-type greases are gaining popularity. These soaps include lithium, aluminum, clay, polyurea, sodium and calcium. The primary type of thickener used in current grease is metallic soap. ![]() The thickener is a material that, in combination with the selected lubricant, will produce the solid to semifluid structure. ![]() In temperature extremes (low or high), a grease that utilizes a synthetic base oil will provide better stability. These mineral oil-based greases typically provide satisfactory performance in most industrial applications. Most greases produced today use mineral oil as their fluid components. By adding the proper grease to your maintenance routine, you guarantee your facility is operating at peak performance. The thickener is often referred to as a sponge that holds the lubricant (base oil plus additives). The base oil and additive package are the major components in grease formulations, and as such, exert considerable influence on the behavior of the grease. These components are oil, thickener and additives. Other ingredients imparting special properties may be included" (ASTM D 288, Standard Definitions of Terms Relating to Petroleum).Īs this definition indicates, there are three components that form a lubricating grease. The American Society for Testing and Materials (ASTM) defines lubricating grease as: "A solid to semifluid product of dispersion of a thickening agent in liquid lubricant.
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