Lubricating oils are substances used to reduce friction between moving surfaces. Examples include both natural and synthetic oils:
- Vegetable Oils: These are derived from plants and can be biodegradable and renewable. Examples include:
- High oleic canola oil
- Castor oil
- Palm oil
- Sunflower seed oil
- Rapeseed oil
- Tree-Derived Oils:
- Tall oil
- Mineral Oils: Derived from petroleum, they are widely used due to their cost-effectiveness and stability.
- Synthetic Oils: Engineered to provide superior performance in extreme conditions. They include:
- Polyalphaolefins (PAOs)
- Esters
- Silicones
- Polyglycols (PAGs)
The selection of a lubricating oil depends on factors such as the application, operating temperature, load, and environmental considerations.
