Hydraulic pumps can be used in hydraulic drive systems using either hydrostatic or hydrodynamic types. Hydrostatic pumps have positive displacement pumps, while hydrodynamic pumps use variable displacement pumps. Simply, displacement refers to the flow of water through the pump's rotation. Variable displacement pumps allow the displacement to be adjusted because they have a more complex construction.
The gear pump is a simpler, more cost-effective hydraulic pump type. It has external teeth and is a fixed displacement type. You can contact your hydraulic pump manufacturer to provide you with the pumping system that best suits your industrial purpose. These pumps have a displacement of between 1 and 200 cubic meters. Although some of these pumps can be louder than others, the modern ones are much quieter and have better quality.
These pumps push the fluids around the gears to pressurize their outlet side. This is done by meshing the teeth of the gear teeth together. Some hydraulics are adjustable or fixed, like the rotary vane pump. These pumps are more efficient than the gear pumps and can also be used at mid pressures of up to 180 bar.
You can easily adjust the pump by simply changing the center of your vane body. These pumps are known as constant pressure pumps. This means that the displacement can be increased or decreased until equilibrium is achieved.