Vane pump
Vane pumps operate according to the Positive displacement principle . The moving vanes, which are guided radially in a rotor and are supported in an eccentric stroke ring (stator), create an increasin
Resistive measurement
Measuring procedure, in which the change of the specific electrical resistance of a conductor is determined using the force or deformation and converted into a measured signal . Example: Piezoresistiv
Safety of a system
In general : The term "safety" should only ever be used within the meaning of preventing a risk primarily to people and not within the meaning of the reliability of a system (cf. operating safety). Th
Positioning error
Errors which (may) occur when positioning hydraulic drives. They consist of; the Δs N, errors associated with hysteresis and the reversal error for the continuously adjustable valve (between 0.1% and
Sound in fluid
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.
Power transmission
Transmission of power - hydraulic ( flow rate · pressure ) - mechanical (torque · angular speed) - electrical (current · voltage) from the generating part of a system (e.g. electric motor, hydraulic p
Erosion wear
Material removal that occurs in hydraulic devices at the points where the hydraulic fluid impacts at high speed. Erosion wear comprises cavitation erosion and particle jet erosion and is material depe
Pressure surge
Shock in the pressure fluid due to the release of kinetic energy if the flow rate suddenly stops (e.g. due to closing a valve or a piston moving against a stop). The pressure wave produced in this man