{"id":2893,"date":"2024-03-07T09:42:14","date_gmt":"2024-03-07T08:42:14","guid":{"rendered":"https:\/\/www.bf-hydraulik.com\/encyclopedia\/hydraulic-fluids\/"},"modified":"2026-04-15T11:54:01","modified_gmt":"2026-04-15T09:54:01","slug":"hydraulic-fluids","status":"publish","type":"encyclopedia","link":"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-fluids\/","title":{"rendered":"Hydraulic Fluids"},"content":{"rendered":"\t\t
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Hydraulic fluids for durable power transmission<\/h1>

Hydraulics is the study of energy transmission through fluids. The property of fluids that is of interest for hydraulic systems<\/a> is their incompressibility. This would make practically any liquid suitable for hydraulics. In practice, however, there are several other requirements for hydraulic fluids<\/a>. This significantly limits the selection of usable liquids. <\/p>

Requirements for a hydraulic fluid<\/h2>

When speaking of the properties and requirements of a hydraulic fluid, this refers to its suitability for closed technical-hydraulic system<\/a>s. Although open systems, such as deep-well pumps, also function according to hydraulic principles, they do not play a role in this context. <\/p>

The primary task of a hydraulic fluid is to transmit energy with low losses. In a hydraulic context, energy refers to operating pressure and volume flow. However, the hydraulic engineer must also consider the waste heat generated by friction or the drive when selecting the working liquid. Furthermore, hydraulic fluids<\/a> must meet numerous other requirements. In summary, these are the prerequisites that make a liquid suitable for use in hydraulic system<\/a>s: <\/p>