määrdeõlisid

Määrdeõlid, known in English as lubricating oils, are essential substances used to reduce friction, heat, and wear between moving surfaces. Their primary function is to create a thin film that separates these surfaces, allowing them to move smoothly against each other. This separation prevents direct metal-to-metal contact, which can lead to damage, increased energy consumption, and premature failure of mechanical components.

The composition of lubricating oils can vary significantly depending on their intended application. They are typically made from a base oil, which can be mineral oil, synthetic oil, or vegetable oil, combined with various additives. These additives are crucial for enhancing the oil's performance. Common additives include detergents to clean engine parts, dispersants to keep contaminants suspended, anti-wear agents to protect surfaces, antioxidants to prevent oil degradation, and viscosity modifiers to maintain optimal thickness across a range of temperatures.

Määrdeõlid are categorized by their viscosity, which is a measure of their resistance to flow. Higher viscosity oils are thicker and provide better lubrication under high loads and temperatures, while lower viscosity oils are thinner and flow more easily, reducing drag and improving fuel efficiency in certain applications. Different industries, such as automotive, industrial manufacturing, and aviation, have specific requirements for the types and grades of määrdeõlid they use. Regular maintenance and replacement of these oils are critical for ensuring the longevity and efficient operation of machinery.