Fixed displacement piston motors are rotary volumetric actuators designed to convert fluid pressure into constant mechanical torque, maintaining a stable displacement throughout their operation. These motors are particularly suitable for applications requiring constant speed, high robustness, and outstanding performance, even under harsh operating conditions in mobile, industrial, and marine sectors.

At fluid-hub, you will find a complete selection of fixed displacement piston motors, chosen for their reliability, high volumetric efficiency, and long-term durability, even under variable loads and heavy-duty cycles. Thanks to our expertise in the hydraulic sector, we provide components suited for every power transmission and motion control need.

Key advantages of fixed displacement piston motors include:

• High operating pressures, up to 400 bar and beyond, thanks to robust and precise construction.

• High mechanical efficiency, due to minimal internal torque losses.

• Compact dimensions relative to the developed power – ideal for space-constrained systems.

• Continuous operation, even in dynamic and reversing duty cycles.

Our range includes motors with various construction layouts (radial pistons, axial pistons with bent axis or swash plate design), suitable for any hydraulic system configuration. They are ideal for hydraulic systems where the pump flow is regulated upstream and displacement variation is not required.

For applications requiring continuous adjustment of speed and torque, explore our range of variable displacement piston motors, which offer greater flexibility through automatic or manual displacement control systems.

Browse the full piston motors section for a complete comparison of available configurations. For downstream speed regulation, fluid-hub offers flow control valves; for hydraulic connection to the circuit, see our fittings range.