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deflection of the two diaphragms then corresponds to the pressure difference . As this pressure difference can be between very small, in relation to the system pressure, and very large and single-sided, differential

of the gear wheels, i.e. in the axial direction. The pressure-controlled leakage that occurs here can be reduced if the clearance gap at the side is reduced with increasing pressure. The axial compensation

Angles can be measured using analogue or digital methods. Analogue methods include rotating condensators, the capacity of which is a measure of the angle of rotation or a rotating potentiometer. Tacho

very expensive and only suitable for a few linking applications given that few hydraulic components can be miniaturised and the amount of assembly work involved. It is only used therefore in cases where

enabling and disabling (unpressurised idle circulation) individual pumps the overall pump delivery flow can be adjusted to demand. Digital pumps are only used infrequently these days. Instead the easier to use

be divided up into equal size sections (steps) for digital measured value acquisition. This action can (exceptionally) be mechanical ( incremental position measurement ). In the majority of cases the outputs

elastomers (AU or PUR). They have excellent elastic properties (wear resistance, elasticity). They can be processed by way of casting or injection.

tension created by this, decreases over the packing length according to an exponential function. This can be improved by using a "swimming" stuffing box ( Figure S 95 ). Stuffing boxes are used in hydraulics

is "opened". As a result an input and an output are produced at the interface. The opened circuit can then be treated as a single control circuit element. The loop must be opened at a point that has no

made of rubber, the fatigue resistance is greater than for . In addition, the entire cylinder volume can be used for oil, with any number of gas bottles being connected downstream. Weak points are the seal