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hydrostatic load-bearing layer it is applied from the exterior. The fluid friction is produced in both cases by the internal friction in the fluid that forms the load-bearing layer (DIN 50 281).

Distance that is required to form from a turbulent a laminar flow and vice versa. The formation of a laminar flow requires a significantly greater distance.

Responsibility for working on and drafting standards for fluid technology lies with the specialist fluid technology department at the Normenausschuss Maschinenbau (Standards Committee Mechanical Engineering [...] NAM). They work on all DIN, ISO and DIN ISO standards. In addition, recommendations with regard to fluid technology are also provided by CETOP and VDMA, and there are VDI guidelines too. A very comprehensive [...] uch 1993/1994" [O+P Design Manual 1993/1994] published by Vereinigte Fachverlage. The specialist fluid technology committee at the VDMA has also produced an overview.

Refers to the supply and discharge of the pressure fluid in pumps/motors through the inside of the displacement unit. For example, with valve plate controlled radial piston machines where the pistons are

uses the conversion, control, feedback control and transmission of energy by means of a fluid or gaseous hydraulic fluid to solve drive tasks.

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

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.

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

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

The kinetic energy also only makes itself apparent where the mass forces of the flowing column of fluid have an effect. As hydraulic fluids are in reality not incompressible, but are compressible, in addition