Objet de la recherche «with».

HFD R and HFD S. Other compositions (HFD U). Common to All HFD fluids is the lack of compatibility with most materials for seals and a high density of 1.15 to 1.4 g/cm3 (intake characteristic!), which

Fabric group for seals that comprise textile fabrics that have been impregnated with elastomer components. The seals manufactured from this material are suitable for very high pressures due to their high

displacement areas between the housing and the spindles, the oil is pushed towards the pressure connection with almost no pulsation. This means that screw spindle pumps are very quiet. However, no volume adjustment

seals ) are not suitable for gases due to their lower viscosity unless they are combined appropriately with a liquid as a barrier medium ( Figure S 73 ). Depending on the design, the pressure in the barrier

a control variable and the actual value of a reference variable. When using a regulator controller with a fixed set point, the control deviation describes the difference between the actual value and the

If certain requirements are fulfilled in a system with given input variables u and output variables v and all input variables are uniquely allocated to the output variables, this unique allocation is known

principle can also be of electrical design if the pilot element and the main control piston are connected with a double closed loop position control system (Figure F 31) .

Hydraulic drive unit operated electrically using a stepper motor or DC motor with integrated control unit ( following control valve ) and integrated, mostly mechanical feedback . The following control

Process to monitor the operating state of a hydraulic system or individual devices with the aid of temperature and pressure measurements . It uses the hydraulic fluid to carry the information and is based

Valve that is in parallel with a hydraulic unit and that permits the pressure fluid to bypass this unit under certain circumstances. Example: Pre-loaded check valve that is in the secondary flow for a