Hakuteksti "fluid".

Concerned with the physical characteristics and behaviour of fluids at rest (hydrostatics) and when moving (hydrokinetics)

Characterises the chemical composition as well as the physical state of a new hydraulic fluid . Here is must be noted that even new oil is never absolutely clean, instead on average it corresponds to filter

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.

hydraulic fluid on motors is from the exterior onto the piston (Figure A 11) . The control on pumps is automatic using suction valves and on motors using control discs or rollers. Opposite: internal fluid admission

Fluid where the shear stress is proportional to the velocity gradient dv/ds: The proportionality factor η is referred to as the dynamic viscosity . Mineral oil is a Newtonian fluid, whereas lubricating

Within a larger system several loads (drive elements) are supplied by one drive power pack. The fluid power system with main pipe can combine such loads, which do not interact, because e.g. they come in

hydrostatic load-bearing layer it is applied from the exterior. The fluid friction is produced in both cases by the internal friction in the fluid that forms the load-bearing layer (DIN 50 281).

Cleanliness level

In hydraulics a differentiation is generally made between four pressure ranges within which the allocation of pressures is however a little scattered: Low pressure (LP): Pressures up to approx. 100 ba

Refers to the supply and discharge of the pressure fluid in pumps/motors through the inside of the displacement unit. For example, with valve plate controlled radial piston machines where the pistons are