perusöljy

Perusöljy, often translated as base oil, refers to the primary component of lubricating oils, greases, and other petroleum-based products. It is the substance that carries the additives, which provide the specific performance characteristics required for a particular application. Perusöljy itself offers basic lubricating properties, such as reducing friction and wear between moving parts.

There are several main types of perusöljy, categorized by their manufacturing process and chemical composition. Group I, Group II, and Group III oils are derived from crude oil through refining processes. Group I oils are the least refined, while Group III oils undergo more extensive hydrocracking and hydroisomerization, resulting in higher viscosity index and better low-temperature performance. Group IV oils, known as polyalphaolefins (PAOs), are synthetic and offer superior thermal stability, oxidation resistance, and low-temperature flow properties. Group V encompasses all other base oils, including esters, silicones, and vegetable oils, each with unique characteristics suited for specialized applications.

The choice of perusöljy is crucial for determining the overall performance of a lubricant. Factors such as operating temperature, pressure, speed, and the environment in which the lubricant will be used all influence the selection. High-quality perusöljy, especially synthetics, can extend equipment life, improve fuel efficiency, and reduce maintenance costs. Perusöljy is the foundation upon which all lubricants are built, and its properties are fundamental to effective lubrication.