Lubricants are substances that are used to reduce friction and prevent wear of moving metal parts that are in contact with each other. This goal is implemented by creating a thin layer of lubricant between the parts, and it is in this regard that the viscosity of the lubricant is discussed. Each lubricating oil consists of a base material to which various additives are added for the required specifications. This base can be mineral (of petroleum origin) or synthetic (such as polyolefins, polyesters, polyalkylene glycols). Mineral bases are usually vacuum distillation products and asphalted residues that have been subjected to solvent extraction, wax removal and purification.
The most common industrial oils and greases include the following:
- engine oil; cars, trucks and aircrafts and etc…
- Silicone oil
- Grace
- Turbine
- Marine oil
- Metalworking and cutting fluids
- Grinding fluids
- Gas engine oil and brake oil
- Hydraulic oils
- Concrete oil
And …
Classification of oils:
Due to the variety and abundance of these products, the need to classify them has been identified. Thus, in the conventional classification, the main types of oils are: motor oils, machine oils, insulating oils, turbine oils and miscellaneous oils.
