Microhydraulic solutions

When space is critical and performance cannot be compromised, micro hydraulics delivers. Hydro Leduc specialises in the design and manufacture of miniature hydraulic components — micro pumps, compact motors and integrated micro hydraulic systems — built to the same exacting standards as our full-size range. Made in France, engineered for applications where every gram and every millimetre counts.

WHAT IS MICRO HYDRAULICS?

Micro hydraulics — also known as miniature hydraulics or microhydraulics — refers to hydraulic systems and components designed to operate at very small scale, typically for flow rates below 20 l/min and in highly compact form factors. Unlike conventional hydraulic systems, micro hydraulic solutions must deliver high power density in minimal envelopes, with no compromise on pressure capability or reliability.

At Hydro Leduc, our micro hydraulic range covers pressures up to 420 bar in housings small enough for mobile, embedded and space-constrained installations.

HYDRO LEDUC MICRO HYDRAULIC PRODUCT RANGE

PB series micro pumps
The PB series is Hydro Leduc’s dedicated micro pump range. These fixed displacement piston pumps deliver high pressure performance in an exceptionally compact body. Designed for integration into tight assemblies, they are available in multiple displacement variants to match flow rate requirements precisely. Key features: low weight, high pressure up to 420 bar, minimal installation footprint, robust piston design. PB series datasheet →

Compact hydraulic motors
Our compact motor range extends the performance of our standard motor families into miniaturised formats. Ideal for mobile machinery, embedded actuators and any application requiring a high torque-to-size ratio. Available in fixed and variable displacement configurations. View hydraulic motors →

Integrated micro hydraulic systems
Beyond individual components, Hydro Leduc’s engineering team designs complete micro hydraulic systems tailored to specific requirements: custom pump-motor combinations, integrated manifolds, bespoke pressure ratings and fluid compatibility specifications. Learn more about custom developments →

MICRO HYDRAULICS USE CASES

Mobile and off-highway machinery
Agricultural equipment, compact construction machinery and utility vehicles increasingly require hydraulic power in confined spaces. Micro hydraulic pumps and motors enable the integration of high-performance hydraulic functions — lifting, steering, braking — without the weight and volume penalties of full-size components.

Aerospace and defence
Weight and envelope constraints in aerospace applications are among the most demanding in any industry. Hydro Leduc’s micro hydraulic components are used in flight control actuation, weapon systems, satellite mechanisms and UAV hydraulic circuits, where every gram saved translates directly into operational performance.

Industrial automation and robotics
Factory automation systems, robotic arms and handling equipment increasingly rely on miniature hydraulic actuators to deliver the force density that pneumatics cannot match at small scale. Micro hydraulic systems offer superior power-to-weight ratio and precise force control for demanding industrial cycles.

Marine and subsea applications
Compact hydraulic systems for marine deck equipment, underwater ROVs and subsea tooling require both miniaturisation and resistance to harsh environments. Our micro hydraulic components are designed for reliability under pressure, humidity and vibration.

FAQ — MICRO HYDRAULIC COMPONENTS

What is the difference between micro hydraulics and standard hydraulics?
Micro hydraulics uses the same physical principles as conventional hydraulics but in significantly reduced form factors. The key difference lies in the power density requirement: micro hydraulic components must deliver equivalent pressure and torque performance within a fraction of the volume and weight of standard components. This demands tighter manufacturing tolerances and more precise engineering.

What pressure ratings are available for Hydro Leduc micro pumps?
Our PB series micro pumps operate at pressures up to 420 bar, consistent with our full-size range. This high pressure capability in a compact body is a defining advantage of Hydro Leduc’s micro hydraulic offering compared to lower-pressure alternatives.

Can Hydro Leduc design a custom micro hydraulic system?
Yes. Our engineering team regularly develops bespoke micro hydraulic solutions for customers with specific envelope, pressure, flow rate or fluid compatibility requirements. Contact us with your specifications for a technical assessment and quote.

What fluids are compatible with Hydro Leduc micro hydraulic components?
Our standard micro hydraulic range is designed for mineral-based hydraulic oils. Compatibility with fire-resistant fluids, biodegradable oils or specific aerospace fluids can be engineered on request as part of a custom development.

What industries use micro hydraulic systems?
Micro hydraulic systems are used across aerospace and defence, mobile machinery, industrial automation, robotics, marine and subsea applications, and specialist medical equipment. Any application requiring high force density in a restricted space is a candidate for micro hydraulics.

Hydro Leduc brings 85+ years of hydraulic expertise to miniaturisation challenges. Contact our technical team for any quotation or custom development request.