The axial piston pumps (Oilgear) are hydraulic pumps that thrive on low viscosity fluids, are dirt tolerant, go up to 1000 bar, and up to 800 L/Min. The pumps are available with variable displacement (enables low, medium, and high pressure) and with fixed displacement (enables high pressure). The pumps enables high horsepower precision control in a compact package.
In an axial-piston pump, the pistons and cylinder rotate around the center, longitudinal axis. The pistons and shoes move in and out of the cylinder because they are sliding upon a stationary, variable angle, swashblock. As the pistons rotate, they alternate between being connected to an inlet port and an outlet port. As the pistons pass over the inlet port, they suck fluid into the piston chamber. As they move over the outlet port, they expel fluid from the piston chamber.
The rate at which the pistons are rotating is controlled by the mechanical rotational input on the pump shaft. The amount of fluid that is drawn into the piston chamber during a rotation is controlled by the angle of the swashblock.