Moog Inc. launched Oct. 21 its Electro-Hydrostatic Unit (EPU)-G, which features a four-quadrant, internal-gear pump and a high-dynamic servomotor, and targets applications with flow rates of 20 to 85 liter/min and pressure levels up to 345 bar. Engineered for direct control via pump speed, EPU-G is suitable for self-contained, hydrostatic transmissions, and can build maximum pressure at both pump ports. EPU-G will be available in sizes 5, 8, 13 and 20 cm³, adding smaller pump volumes to the existing EPU product range, which covers 19 to 250 cm³.
EPU-G's variable speed and power-on-demand operation reduce noise emissions at partial load, reducing energy consumption and operating costs. With high dynamics, low inertia and minimal pulsation, EPU-G enhances overall machine performance. Its compact axial manifold interface allows direct manifold connection without additional piping, increasing system stiffness, reducing actuator footprint, simplifying machine design, and reducing setup and maintenance time. An actuation system based on EPU-G reduces oil volume by up to 90%, supporting sustainable and clean operations.
To meet users’ needs for convenience, modularity, electrification, energy efficiency, robustness, serviceability and sustainability, EPU-G's compact design and reduced complexity make it easy to handle and integrate without requiring extensive hydraulic expertise. Compared to medium to large electromechanical actuators, EPU-G is robust, powerful and easy to maintain, according to Moog. It adds that EPU-G is an end-to-end product that supports users transitioning from conventional hydraulics to electro-hydrostatic actuation, as well as from system design to implementation.
