Searched for "fluids".

readily biodegradable hydraulic fluids are used. These fluids can be produced from mineral oil or using renewable materials. They are also referred to as bio-based hydraulic fluids. [...] the hydraulic fluid conducts away the locally occurring heat and takes with it contamination, which is caused by debris, for example. For this task, mineral oils and flame-resistant fluids are available [...] Hydraulic fluids have the task of transporting hydraulic energy from the location of generation (pump) to the location of conversion ( cylinder , motor) with the minimum possible losses. They are also

Damage to the hydraulic fluid primarily due to oxidisation (formation of acid residues) and polymerisation (enlargement of the hydrocarbon chains); creates sludge or resin-like coatings on device parts [...] parts as ageing products. The ageing of hydraulic fluids is accelerated by air (oxygen), water, high temperatures and metal catalysts. It is measured by the neutralisation number (Figure A 13).

Cleanliness level

Sound that propagates in a fluid medium. It can have been, but has not necessarily been generated in the fluid. The propagation velocity for mineral oil in steel pipes is approx. 1,300 m/s.

hydraulic fluid on motors is from the exterior onto the piston (Figure A 11) . The control on pumps is automatic using suction valves and on motors using control discs or rollers. Opposite: internal fluid admission

Compressibility

Resistance of a liquid to changes in viscosity under shear stress (CETOP RP 100).

In hydraulics a differentiation is generally made between four pressure ranges within which the allocation of pressures is however a little scattered: Low pressure (LP): Pressures up to approx. 100 ba

of the hydraulic fluid of a hydraulic system. It can be caused by solid particles and/or dissolved foreign matter, by mixing with foreign liquids, or by air entering the hydraulic fluid. The solid particles [...] metallic surfaces. Therefore, hydraulic fluids must be filtered. Contamination with foreign liquids occurs through the entry of water, mixing with other hydraulic fluids or lubricants. The contamination may

This situation marked the terminology in fluid technology for a long time. With the O+P-Fachlexikon "Fluidtechnik von A bis Z" (O+P technical glossary "Fluid technology from A to Z"), the 1st edition [...] and explaining the terms and names used in fluid technology. The lexicon triggered some productive discussion about terms and their technical context in the fluid technology sector and among users. University [...] Hydraulic and pneumatic drive and control technology – collectively termed fluid technology – is a comparatively young specialist area of drive and automation technology that only started to become used