When it comes to purchasing the suitable type of grease for your individual application requirements, it’s best to take several factors into consideration prior to making a remaining decision.
BASE OIL
Base oil represents the foundation of each lubricant and it’s value mentioning that its type determines the overall performance of the grease in question. Three fundamental types of base oils are mineral, artificial, and vegetable oils. Synthetic oils are considered to supply one of the best results in terms of protection, performance, temperature and weather resistance, adopted by good shear stability.
ADDITIVES
Additives are used to enhance the features and qualities of each grease and increase its performance. The most common additives are extreme pressure additives, oxidation, rust, and corrosion inhibitors, polymers used to increase adhesiveness, insoluble solids, and additives that provide increased wear and tear protection. Additionally, sure dyes and pigments are added to each grease.
THICKENER
Thickeners are used to enable all grease parts to bond better, which will increase the overall efficiency of every grease. Types of thickeners which can be commonly used are simple and complex soaps, which are based mostly on lithium, calcium, aluminium, sodium, and barium compounds. In addition, sure non-soap thickeners, reminiscent of these primarily based on clay and polyurea, can be utilized to provide the grease its consistency.
CONSISTENCY
Consistency is a property defined by the National Lubricating Grease Institute (NLGI) used to determine the level of softness or hardness of every grease. Each grease is assigned a selected NLGI number that goes from 000 to 6. These NLGI grades are then used to specific the level of consistency each grease has. So, as an example, NLGI grade 000 grease is totally fluid, NLGI grade zero grease is described as very soft, NLGI 1 grease is soft, NLGI 2 grease is considered regular, NLGI three grease is firm, while NLGI 6 grease is defined as very hard.
VISCOSITY
Grease viscosity determines its ability to stay stable and offer effective protection towards friction. Higher viscosity provides better stability when grease is uncovered to heavy, gradual loads, while lower viscosity is ideal for high-speed applications.
TO SUM UP
As you can see, the type of grease you determine to make use of issues a lot.
Every lubricant has a different set of characteristics that determine its consistency, viscosity, ability to stop friction, reduce wear and tear, protect in opposition to rust, corrosion, and oxidation, maintain mobility, and stop water and other contaminants from coming into contact with the equipment.
Take all these factors into consideration before making a purchase and bear in mind – the best grease for you is the one which meets (and surpasses) all the requirements you have.
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