Axial Piston Pumps - for precise hydraulic applications
The axial piston pump is one of the most powerful and efficient hydraulic pumps and is used wherever high pressures, variable flow rates and particularly precise controllability are required. Thanks to its piston/cylinder principle, it delivers outstanding efficiency even under continuous load, making it ideal for demanding industrial plants, construction and agricultural machinery or mobile high-performance units. In the LöSi® web shop, you will find axial piston pumps in various designs and performance levels – perfect for systems with high demands on dynamics, efficiency and resilience.
What is an Axial Piston Pump?
An axial piston pump is the heart of high-performance hydraulic systems. It converts mechanical rotational energy into hydraulic pressure by moving multiple pistons parallel to the drive shaft. This design enables maximum operating pressures (often > 400 bar) with excellent efficiency.
A distinction is made between two fundamental technologies:
- Swashplate Principle: The cylinder block rotates straight while the pistons slide over an inclined plate. This design is compact and ideal for variable displacement pumps, as the angle (and thus the displacement) can be changed during operation.
- Bent Axis Principle: Here, the entire cylinder block is tilted relative to the drive shaft. These pumps are extremely robust, self-priming, and suitable for very high speeds.
In addition, it is crucial whether the pump is designed for the open circuit (tank return) or the closed circuit (direct circulation, e.g., in travel drives).
Advantages of Our Axial Piston Pumps
When gear pumps reach their performance limit, the axial piston pump takes over. It is the most efficient solution for energy-intensive applications.
Technical strengths at a glance:
- Variable Flow Rate: Variable displacement pumps adjust the volume flow exactly to the demand (Load-Sensing). This saves massive amounts of energy and reduces heat generation.
- Power Density: Maximum hydraulic power in the smallest installation space.
- High-Pressure Performance: Continuous operation at high pressures without significant wear (with correct oil maintenance).
- Precise Control: Electronic or hydraulic controllers enable finest dosing of force and speed.
Typical Areas of Application for the Axial Piston Pump
These pumps drive the "heavyweights" of industry and mobile hydraulics. Typical scenarios are:
- Hydrostatic Travel Drives: Closed circuits in wheel loaders, combine harvesters, or bulldozers.
- Industrial Presses: Generation of enormous pressing forces with precise control.
- Mobile Hydraulics: Working hydraulics in excavators (Load-Sensing systems) to execute multiple movements simultaneously without performance drop.
- Wind Power & Marine: Blade adjustment on turbines or steering gears on ships.
Selection Criteria & Technical Data
The selection of an axial piston pump is complex. An incorrect design (e.g., wrong direction of rotation or wrong controller) leads to immediate failure.
Define these parameters before configuration:
- Fixed or Variable? Do you need a fixed displacement (fixed displacement pump) or a variable control (variable displacement pump)?
- Controller Type (for variable pumps): Load-Sensing (LS), pressure-flow controller (DR), or electric proportional adjustment?
- Displacement : How many cm³ per revolution are required?
- Flange & Shaft: SAE flanges and splined shafts are the standard in this performance class. Check the number of teeth!
- Direction of Rotation: Looking at the shaft – Right or Left?
Maintenance Note: Axial piston pumps are sensitive to dirt. Plan for high-quality suction and return filters to ensure service life.
Select & Order Axial Piston Pump Now
Invest in maximum efficiency. Discover our range of high-performance piston pumps – from the robust fixed model to the intelligent variable displacement pump.
Use our technical advice for complex designs (open/closed circuit). Check availability now and order premium hydraulics directly online!
