Voiteluöljyjä

Voiteluöljyjä, or lubricating oils, are substances used to reduce friction between moving surfaces. They are typically oil-based or synthetic fluids. The primary function of lubricating oils is to create a thin film between two surfaces, preventing direct contact and thus minimizing wear and heat generation.

The composition of lubricating oils varies greatly depending on their intended application. Base oils, which form the bulk of the lubricant, can be derived from petroleum or be synthetic. Additives are incorporated into the base oil to enhance specific properties, such as improving viscosity, preventing oxidation, or providing anti-wear characteristics.

Common applications for lubricating oils include internal combustion engines, industrial machinery, gears, and bearings. In engines, they not only lubricate but also help to cool the engine components and clean away debris. For industrial equipment, proper lubrication is crucial for maintaining operational efficiency and extending the lifespan of machinery.

The viscosity of a lubricating oil is a key property, referring to its resistance to flow. Viscosity is important because it determines the thickness of the oil film formed between surfaces. A lubricant's viscosity needs to be appropriate for the operating temperature and pressure conditions of the application.

Over time, lubricating oils can degrade due to heat, oxidation, and contamination. This degradation can lead to a loss of their lubricating properties, necessitating periodic replacement or reconditioning. Understanding the role and properties of lubricating oils is essential for effective maintenance and operation of many mechanical systems.