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Most commonly used form of hydraulic fluid (" oil hydraulics "). Their high level of lubricity and relatively high viscosity make it possible to use gap seals in pumps and valves and therefore choose

Biggest difference for the same when travelling across the full signal range (i.e. forwards and backwards). Hysteresis values are expressed as a percentage of the max. signal value (Figure H 31) . Wit

Directional valve that has a 4th switching position in addition to the three standard positions. The 4th position can be used to solve particular tasks, such as a fail safe position in the case of a f

In the case of the electrical activation of continuously adjustable valves , a distinction is made between two different switching types: Passive switching : The electrical input signal is directly fe

Measurements at a sensor or valve whereby the measured variable zero and the output signal zero do not match up as a result of manufacturing tolerances. The type of measurement is dependent on the dev

Switching system which makes it possible to operate a differential cylinder in a network with impressed pressure ( constant pressure network ) without experiencing pressure losses due to throttles, an

Also termed open transmission. hydrostatic transmission on which the pump and motor operate separated from each other. Pipes and hose lines make the hydraulic connection (Figure F 10) . Opposite: inte

The pressure gain on a continuously adjustable valve corresponds to the gradient on the pressure-signal function , e.g. 2,000 bar/mA. It is crucial for the accuracy that can be achieved with a control

Installation of one or more valves in one plate, which is placed between two valves or between a valve and base plate (block) (Figure Z 19). Pressure valves , check valves and flow valves are suitable

Valve assembly method in which individual function blocks of a machine control are connected together to form vertical stacking assemblies above each other or to form series connections (beside each o