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Valve as an additional backup for the closing movement of a hydraulic cylinder , e.g. for pressing or injection moulding machines. The valve is operated by the movable protective grid of the machine i

If hydraulic valves receive their own electronic control onboard and thus their own intelligence, they can work completely independently and also offer numerous additional functions. The electronic co

Leakage occurring inside a device. It is not visible from the outside, but can involve a loss of power. With pumps, for example, this may be a flow of leaking oil from the high-pressure side towards t

Hydraulic accumulator that uses a gas as the medium for applying a load to the hydraulic fluid (air for accumulators for water hydraulics , nitrogen for oil accumulators). As a consequence of the gas

After the acceleration and rapid phase of the cylinder the feed motion is introduced, in which a clearly defined velocity is to be observed. The force required here is determined by the working resist

Entirety of the static and dynamic properties of a final controlling device in physical/technical terms and in terms of transmission (DIN 19 237).

Describes the flow rate-pressure characteristic of a concentric flow resistance ( orifice , Bernoulli's principle). Does not apply for laminar flow resistance (e.g. capillary tube ).

Flow rate escaping from pressure compartments in spite of seals , particularly in systems with purely metallic seals, without contributing any useful work. Apart from the geometric variables associate

according to VDI 3260 Graphic description of the movement sequence of hydraulic systems from which the individual steps and their sequence for a switching cycle are defined, as can be seen in (Figure

Pressure p A or p B in the operating ports A or B with a load that is not subjected to load and hydraulic zero. The clamping pressure is then equal to half the sum pressure . This statement does not a