Force vs. pressure
In a closed hydrostatic system (closed box without moving in the fluid) pressure p is constant at each point. The pressure F is calculated as the force F per unit area A and the number of cylinders ic
Profile of contamination
Tabular summary of the dirt particles in a hydraulic fluid according to their particle size. The profile of contamination is increasingly being demanded of filter manufacturers by users as a purity requirement
Pressure pulsations
Periodic pressure surge in a hydraulic fluid that is caused by the constant changing of the individual displacement units in a hydraulic pump from the suction phase to the pressure phase and vice-versa
Port
End of a flow path in a device to which pipes for the transport of the hydraulic fluid to or from the device can be connected. As the type of port has a major effect on how the installation is assembled
Sliding friction
that is produced when two surfaces rub against each other. Friction can vary very significantly in fluid technology, depending on Which seal material is used, Which seal shape is used, The magnitude of the
Power loss
Sum of losses arising in a fluid system. It is comprised of the pressure losses caused by mechanical and hydraulic friction and flow losses , leakage losses , throttle losses , which generally constitute
Residual contamination
Quantity of contamination in the hydraulic fluid after filtering . This is currently mainly measured and counted using automatic counting devices. The result is a profile of contamination in accordance
Cylinder efficiency
Ratio of the mechanical output power P a to the fluid input power P e: It is comprised of the volumetric efficiency η 2vol, which is 100% in the case of non-leaking seals : and the hydromechanical efficiency
Pressure loss in lines (laminar)
the length lp and the diameter dp of the line as well as from the density ρ and the speed of the fluid vf. Calculate the pressure loss in lines directly and easily in our hydraulic calculator .
Hydrostatics
with the generation and transmission of energy and signals via the static pressure associated with a fluid. This is why, compared with hydrokinetics , the pressure ranges are relatively high and the flow