Grease Basics
Oil, thicker, and additives are the three major components in grease. They determine how the grease behaves when subjected to different operating conditions. The thicker is somewhat like a sponge that holds the oil and the additives in place.
Base Oil
Most greases manufactured today use high-quality mineral oils as their major fluid component. They are produced with preeminence in quality to provide satisfactory performance in a wide variety of applications. Synthetic oils are known to offer better performance in extreme temperatures (low or high).
Thickener
A thicker is a substance that gives grease its gel-like structure, which contributes to its texture. The best materials for the thickener depend on the application.
Additives
Additives play various roles, they:
Most common additives are rust inhibitors, anti-wear, friction-reducing agents, extreme pressure additives, polymers and oxidation inhibiting compounds. Additionally, compounds such as moly or graphite may be added to reduce friction during heavy loading on or low speeds.
Functions of Grease
Grease plays a significant role of lubricating moving surfaces and maintaining a thin film on the surfaces without leaking. Quality grease should retain its lubricating properties even in extreme conditions.
Applications that are Suitable for Grease
The use of oil and grease is not generally interchangeable. Grease is used in environments where the use of oil is not practical or convenient. Grease is mostly used for:
Functional Properties of Grease
Characteristics of quality greases