Piston Pumps

When high operating pressures are required, piston pumps tend to be used. Piston pumps will typically endure higher pressures than gear pumps with similar displacements; however, there exists a higher initial price associated with piston pumps in addition to a lower level of resistance to contamination and improved complexity. This complexity falls to the gear designer and service technician to understand in order to guarantee the piston pump is definitely working correctly using its additional moving parts, stricter filtration requirements and closer tolerances. Piston pumps are often used in combination with truck-mounted cranes, but are also found within other applications such as snow and ice control where it might be desirable to vary system circulation without varying engine swiftness.

A cylinder block containing pistons that move around in and out is housed within a piston pump. It’s the motion of these pistons that draw oil from the supply interface and then pressure it through the store. The position of the swash plate, that your slipper end of the piston rides against, determines the length of the piston’s stroke. As the swash plate remains stationary, the cylinder block, encompassing the pistons, rotates with the pump’s insight shaft. The pump displacement is certainly then dependant on the total volume of the pump’s cylinders. Fixed and variable displacement designs are both available.


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