Searched for "fluids".

depends on the rotation speed of the pump, the intake cross-section and the viscosity of the hydraulic fluid. The higher the rotation speed and the viscosity become, the worse the intake characteristic. If the [...] the intake characteristic is inadequate such that cavitation occurs, either the hydraulic fluid must be fed to the pump (pump under the tank) or it must be supplied with pressure (charge pump)

The column of fluid in pipes is elastic and affected by both weight and friction. These characteristics are described in terms of the pipe capacity , the pipe inductance and the flow resistance (effective [...] (effective resistance). The column of fluid represents a homogeneous oscillating system as opposed to a discrete mechanical one. In a system of this kind, variable pressure and flow rate are dependent on both

Device used to control or the output of the fluid by influencing the start, stop and direction, as well as the pressure and/or flow rate of the pressure fluid acting in the system ( Figure V 3 ). Valves

The viscosity of a Newtonian fluid changes as a factor of the temperature: For hydraulic fluids it decreases rapidly as the temperature rises and at low temperatures it approaches the pour point ( Figure

up to 360°. Rotor swivel motors generate their torque directly through fluid admission of a rotating wing to allow hydraulic fluid , which is connected to the drive shaft ( c ). Very compact design with

perpendicular to the drive axis. They can be subjected to pressure from the inside or outside by pressure fluid and are, amongst other things, suitable for high constant pressures . Pressurised from the inside [...] The pistons in the fixed cylinder block are moved by an eccenter on the drive shaft. The hydraulic fluid flow is generally controlled by suction and pressure control valves ( Figure R 5 ). Another concept

Basic design for a hydraulic drive in which the fluid circulates from the pump to the actuator and from there straight back into the suction line of the pump. The main difference between this and an " [...] " open circuit " is that the hydraulic pump in a closed circuit is fed directly by the hydraulic fluid returning from the actuator (hydraulic motor). This effectively "clamps" the pump from both the suction

The flow rate distribution ensures a continuous fluid supply to the hydraulic consumers independent of the pump capacity. With the help of pressure compensation, the oil flow to the consumers is proportionally [...] undersupplied by the pump. Each valve section has its maximum flow rate. Without flow distribution, the fluid will choose the path of least resistance if the pump cannot provide the required flow. This can result

The main function of the filter is to hold back undissolved foreign particles in hydraulic fluid. This makes it an important part of any hydraulic system. The aim of filtering is that The wear on moving [...] control spools and therefore interruptions in operation are prevented; The ageing of the hydraulic fluid due to chemical processes as a consequence of contamination is slowed down. Filtration is more important

In fluid technology electro-mechanical used to actuate valves are often referred to as solenoids. These are not permanent magnets, but are electromagnets. An electrical input signal (voltage or current) [...] today apply a compressive force. The return to the initial position is generally via spring force. In fluid technology DC solenoids (voltage or current) and AC solenoids (voltage or current) are available as