The differences between piston pumps and vane pumps
A hydraulic pump is the most important component of your hydraulic system – it is the driving force and power of the hydraulic fluid, allowing the system to work as it is meant to. They are capable of pushing huge amounts of oil through hydraulic cylinders and motors, which is useful for all sorts of functions, like lifting and lowering heavy objects or opening or closing components. Considering this, it is important that you know about the different types of pumps and to what functions they are best suited – two examples of the hydraulic pump are piston pumps and vane pumps.
Both piston pumps and vane pumps operate in the same way, by displacement. They both include sealed chambers within their mechanism which allows the fluid to be transported from inlet to outlet. These chambers act as a barrier to ensure that there are no connections between the inlet and the outlet and allow the pumps to function at high pressures.
In general, piston pumps handle large volumes at very high pressures. There are a number of different functions for which these are useful, including construction, marine, offshore and industrial. These pumps have the highest pressure rating and the best overall efficiency and reliability while maintaining it’s call size. The pumps get their name from the pistons within, which slide back and forth to pump fluid through the outlet – these also act as great sealants, which prevents any leakages that would usually come hand in hand with such high pressures. Axial piston pumps feature a bent axis design that effectively acts as a motor and pump in one, and the displacement volume can be adjusted by changing the swivel angle. These piston pumps are hugely adaptable. Radial piston pumps are used in areas of high pressure and are the only choice of pump capable of working in high-pressure examples like presses.
Vane pumps are perfect if you are looking for your system to be as low-volume as possible while still maintaining a good efficiency. Vane pumps with low flow pulsation which allows for less noise production – because of this, these pumps are best suited to systems of constant flow and pressure. They are used in industry and land and road construction, as the low noise level prevents the problem of a noisy workplace or disturbing locals. Despite their low noise levels, they are still able to operate at high speeds of up to 3000 rpm, which makes them a great choice for cost and flow systems.