Piston pumps can have the pistons arranged in a radial or axial fashion. Radial types tend to be specialised
for applications requiring very high power, while axial piston pumps are available in a wide range of displacements
and pressure capabilities that make them suitable for many mobile and industrial tasks.
Axial-piston pumps consist of a set of pistons that are fitted within a cylinder block and driven
by an angled swash plate powered by the input shaft. As the swash plate rotates, the pistons reciprocate
in their respective cylinder block bores to provide the pumping action. Axial-piston pumps are available with the
input shaft and pistons arranged coaxially, or with the input shaft mounted at an angle to the piston bores.
Bent axis pumps tend to be slightly more volumetrically efficient for technical reasons, but they
also tend to be slightly larger for a given capacity and their shape can present packaging difficulties in some applications.
A unique characteristic of a piston-type pump is that the displacement can be changed simply by changing
the angle of the swash plate. Any displacement between zero and maximum is easily achieved
with relatively simple actuators to change the swash plate angle.
• Displacements up to 500cm3/Rev
• Typical Pressure up to 380Bar
• Simple Multiple Assemblies (Tandem Mounting)
• High Overall Efficiency
• Compact Design
• Extensive Range of Control Options
• Requires Extremely Good Contamination Control Systems at All Times
• Good Serviceability