![]() In the above chart you can see that a lubricant is made of mostly base oil (mineral or synthetic) with a thickener (fatty acid plus a soap alkali) to hold the base oil and additive package (usually graphite/molybdenum to improve temperature stability, performance under extreme pressure etc.) together. ![]() All greases share a similar anatomy and are made from 3 basic pieces: Classifying the different grease types There are different lubricant grease types for different purposes. Getting the lubrication to where it is needed and having it not leak out is critical – so a greases consistency is important during selection. Ranging from fluid (canola oil) to normal grease (peanut butter) all the way to solid (cheese), the National Lubrication Grease Institute (NLGI) has a classification charts for grease consistency. Some lubricant won’t move through lines under pressure so its pumpability is important. These systems pump grease through lines and nozzles to the parts that need grease. Most plants that operate machinery will have some form of automated grease dispensing system. Depending on the use, you will want lubricant to have a certain amount of water resistance to continue working normally even if water is there. At low temperature grease hardens and can clog up parts and prevent them from moving. ![]() What happens to the lubricant (grease or oil) at different temperature? Grease doesn’t perform well at high temps because it can’t get rid of the heat like oil can. If it tends to get harder or softer when working, it is said to be unstable. ![]() You want a lubricant to maintain its consistency when performing its role of reducing friction and heating between moving parts. General characteristics to consider when deciding which form of lubrication is best: Any substance that achieves this can be called a lubricant. What is the point of lubrication?Īll types of lubrication – including oils, greases, and sometimes water or air – are used to reduce wear by reducing friction and heating of parts that move. You put grease on the mower wheel axles. You put oil in your Honda mower small engine. Oil lubricant is used on parts that operate at high speed and temp. Grease lubricant is used on parts that will operate at low speed and normal temperature.
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