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A true grease consists of an oil or other fluid lubricant that is mixed with a thickener, typically a soap, to form a solid or semisolid. Greases are usually shear-thinning or pseudo-plastic fluids , which means that the viscosity of the fluid is reduced under shear stress .
The two main types of lubricants are oils and greases. Both aim to lubricate equipment and prevent damage through metal to metal contact. However, there are a few key differences in how they are used. To put it simply, grease is oil mixed with a thickener and other additives.
All these seven types of grease can be referred to as multipurpose (MP) greases, extreme pressure (EP) greases, marine greases, heavy-duty greases, specialty greases, automotive greases, industry greases, and so on, depending on the unique properties of base oils, additives, and thickeners used in the process of manufacture.
So, what is the difference between an oil and a grease? Very simply: Greases are usually oils with thickener added. At room temperature, greases are usually solid, while oils are usually liquid. All oils can be turned into greases, but not all greases come from oils.
It's important to know when to use oil or grease, as each has its own advantages and applications. In this article, we explore the differences between oil and grease, how grease is made, considerations for choosing the right lubricant, and when to use oil instead of grease.
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While both serve the purpose of reducing friction between moving parts, they have distinct attributes that make them suitable for specific situations. In this article, we will explore the characteristics of grease and oil, their differences, and the advantages they offer in different scenarios.
Lubricating greases are a mixture of oil, a thickener, and various additives. Greases are known for their ability to stay in place and provide excellent leakage control. They form a protective seal against contaminants, preventing particles and water from entering critical components.
Grease is easier to contain than oil. Oil lubrication can require an expensive system of circulating equipment and complex retention devices. In comparison, grease, by virtue of its rigidity, is easily confined with simplified, less costly retention devices. Grease holds solid lubricants in suspension.
