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Air bubbles rising up from the oil in the container may form a surface foam which can have a disruptive effect within the hydraulic system. Since surface foam causes cavitation in pumps, it must not b

Deviates from the normal sequence of functions for an operating unit or machine by switching it to a safe state via the shortest possible route. This may mean a sudden stoppage, but may also include s

1. Subsequent heat treatment (tempering) of certain elastomers whereby optimal characteristics do not emerge until the associated final linking occurs. 2. Unwelcome additional linking under the influe

Physical variable whose value is to be determined via measurement.

Ability of a system (e.g. of a hydraulic drive) to yield as little as possible under an external load. Load stiffness for linear drives is mostly stated in N / μm. It can be compared with spring stiff

Location in a device at which the flow cross-section is constricted and therefore a throttle effect (increase in resistance) occurs.

Measure of the decay of an oscillation in a delay element of second order. D = 0 signifies an undamped continuous oscillation and D = 1 an aperiodic oscillation (Figure D 5). For reasons related to co

The European Committee for Oil Hydraulics and Pneumatics was founded in 1962. Over 700 businesses from 13 European countries are represented in CETOP by the national fluid technology associations. The

Time-step diagram

Are characterised by numerical values for the individual variables that occur in a specific operating state of a system. The variables may change during operation (CETOP RP 100). As rule the operating