Grease Properties |


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Grease consists of oil (or some other liquid lubricant) and a thickener (this could be a soap). This combination forms a solid or semisolid. Grease is a type of pseudo-plastic fluid. Under shear, the viscosity of the grease will decrease with time. Greases are applied under pressure in order to get it into places where a liquid would not maintain itself or flow. Grease simple soaps can include calcium, sodium and lithium stearates. Complex soap thickeners can include aluminum complex, […]

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Grease Basics |


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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. Other ingredients imparting special properties may be included” (ASTM D 288, Standard Definitions of Terms Relating to Petroleum). Grease Anatomy As this definition indicates, there are three components that form lubricating grease. These components are oil, thickener and additives. The base oil and additive package are the major components in grease formulations, and as […]

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