hydrauliöljyn

Hydrauliöljy, also known as hydraulic fluid, is a non-compressible fluid used in hydraulic systems to transmit power. It is essential for the operation of a wide range of machinery, including excavators, forklifts, industrial presses, and aircraft landing gear. The primary functions of hydraulic fluid are to lubricate moving parts, dissipate heat, and transmit force from the pump to the actuators.

The composition of hydraulic oil varies depending on the application. Common types include mineral oil-based fluids, synthetic fluids, and water-glycol fluids. Mineral oil-based hydraulic oils are the most common due to their cost-effectiveness and good performance in many applications. Synthetic fluids offer superior performance in extreme temperature conditions and are often used in aerospace and specialized industrial equipment. Water-glycol fluids are fire-resistant and are used in situations where fire hazards are a concern.

Key properties of hydraulic oil include viscosity, which determines its resistance to flow, and lubricity, which reduces friction between moving parts. Other important characteristics include thermal stability, oxidation resistance, and water tolerance. Maintaining the correct viscosity is crucial for efficient operation, as too low a viscosity can lead to leaks and reduced lubrication, while too high a viscosity can increase resistance and reduce efficiency.

Regular maintenance and testing of hydraulic fluid are vital to ensure the longevity and reliable performance of hydraulic systems. Contamination, degradation, and improper fluid levels can lead to component wear, system failures, and costly downtime. Therefore, fluid analysis and adherence to recommended service intervals are standard practice in hydraulic system maintenance.