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Dynamic switching capacity : States the pressure p and flow rate Q at which a directional valve can still be switched ( Figure S 16 ). This is particularly important in the case of directly controlled

throttle valve does not have a return connection, the portion of the flow rate removed by the throttle can only be removed from the circuit via the system's pressure-limiting valve. As this valve is set to

parts lose their form (voltage). When cooling, plastification of the materials may occur This process can be repeated as desired. Seals or sealing parts made of thermoplastics must therefore not be heated

The temperature of the hydraulic fluid in hydraulic systems can be measured either with simple measurement devices (thermometer) or with a measuring device that issues signals to the control unit. The

toothed rack pistons, which enter into a transversally mounted sprocket ( a ). This construction type can be built for up to 2 x 360° pivoting angles and offers the largest torque; pressure range up to 200

also provide braking (e.g. deceleration or lowering braking). In addition, the direction of rotation can also be reversed. The combination of these possibilities yields, transferred to Cartesian co-ordinates

pressure changes (Figure K 29) , although they offer the advantage that loads connected in parallel can also be operated with one pump at the same time (e.g. parallel circuit ). In the field of electro-hydraulic

controlled in relation to the task (DIN 66 257). In principle, the program for a binary or digital control can be defined either in terms of the type of functional elements and their connections ( hard-wire programmed

s the ability of a hydraulic fluid to separate out undissolved air (air bubbles). Undissolved air can primarily enter the pressure medium due to leaks, turbulence in the tank or due to cavitation in the

the contact area and the lubrication condition, the friction displays non-linear behaviour, which can be attributed to characteristic mechanisms of action. A distinction is made between three different