What oil is commonly used in hydraulic presses for operation

Hydraulic presses generally use hydraulic oil as the working medium. Hydraulic oil is the working medium that transfers energy in hydraulic systems, and has functions such as lubrication, cooling, rust prevention, and cleaning. For hydraulic oil presses, the selection of hydraulic oil is crucial as it directly affects the performance, lifespan, and safety of the equipment.

Hydraulic oil is mainly divided into the following categories:

• Mineral oil type: This is the most common type of hydraulic oil, which is extracted from petroleum by distillation to obtain the base oil components. Mineral oil hydraulic oil has good lubrication and sealing performance, but it may be greatly affected by temperature changes, and aging is fast, which is easy to produce sediment and foam. It is suitable for general hydraulic systems, but may be limited when used in high or low temperature environments.
• Synthetic oil type: Synthetic hydraulic oil is manufactured through chemical synthesis technology, with uniform molecular weight and chemical structure, and can maintain stability at extreme temperatures. Compared with mineral oil, synthetic hydraulic oil has better anti-oxidation, anti-wear and foam resistance, and is suitable for extreme working environments such as high temperature, low temperature or high pressure. However, due to high production costs, its price is relatively expensive.
• Biobased oil type: Biobased hydraulic oil is made from plant or animal fats through chemical reactions, with excellent renewability and biodegradability, and less environmental pollution. However, its compatibility with metal materials may be poor and not suitable for certain special occasions.

When choosing hydraulic oil, the following factors need to be considered:

• Equipment requirements: Select the appropriate hydraulic oil based on the model, specifications, and working conditions of the hydraulic press.
• Performance requirements: including lubricity, anti-wear, anti-oxidation, foam resistance, viscosity temperature characteristics, etc.
• Environmental requirements: For occasions with high environmental requirements, bio based hydraulic oil or other environmentally friendly hydraulic oil should be selected.
• Cost consideration: Reasonably control the cost of hydraulic oil while ensuring equipment performance.

In summary, hydraulic presses generally use mineral oil, synthetic oil, or bio based hydraulic oil as the working medium. The specific type of hydraulic oil to be selected depends on the actual needs of the equipment and the working environment.

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