What is the primary purpose of grease in lubrication systems?

The primary purpose of grease in lubrication systems is to provide lubrication and protection for machinery components. Grease serves to reduce friction between moving parts, which helps to minimize wear and tear and extend the life of the equipment. Additionally, the thick consistency of grease allows it to adhere to surfaces better than oil can, providing a protective barrier that prevents contaminants like dirt and moisture from entering bearing surfaces and other critical areas. This aspect of grease also aids in maintaining a consistent lubricating film, which is vital during periods of inactivity or when the machinery operates at low speeds.

While grease does contribute to cooling machinery components, its effectiveness in this regard is secondary to its primary roles of lubrication and protection. Grease does not act as a cleaning agent, and while it may help to displace some contaminants, it is not designed for that specific purpose, which is typically the role of other lubrication additives or systems.