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Parker Hannifin has launched a compact electro-hydraulic actuator that provides a freestanding actuation system suitable for military, aerospace, marine, construction and general industrial use.

The Compact EHA, designed for space-critical, portable and remote applications, is a fully self-contained, double-acting actuator offering a high power density at operating speeds of more than 100mm/sec.

This makes the new Compact EHA ideal for use as an alternative to conventional linear movement technologies such as electromechanical and pneumatic drives.

All components are integrated into the monobloc housing, making for a compact construction.

The unit comprises a high-performance, double-acting hydraulic actuator, driven via a reversible gear pump, which is powered by an integrated 12VDC or 24VDC motor.

The pump is enclosed within the hydraulic fluid reservoir, with pressure relief and check valves also being incorporated within the system assembly.

Trunnion pin mounting holes are set within the base of the housing and at the end of the piston rod to facilitate installation; all that is required are mounting pins and motor connections.

Each piston rod is manufactured from stainless steel, with a micro-finished cylinder bore featuring buna-nitrile and polyurethane sealing elements to prevent both leakage and the ingress of contaminants.

The monobloc housing is produced from anodised aluminium, providing a relatively lightweight, tough and corrosion-resistant unit that is sealed to IP67 standard.

The Compact EHA is supplied fully tested, flushed and filled with fluid ready for operation; it is fully sealed and requires no subsequent maintenance.

The design and construction of the Compact EHA actuator enables it to produce high levels of force – up to 22.25kN on extension and up to 15.57kN on retraction.

By comparison with conventional ballscrew or linear motion systems, the Compact EHA is free from problems of backlash and does not require any form of gearing, so it is unaffected by wear and the loss of positional accuracy.

The new actuator can be used at operating temperatures between -29C and +65C and generates less than 60dB of noise.

The Compact EHA is available with a range of options for motor, pump, bore and stroke length, making the new system a suitable choice for machine builders looking for a simple and efficient method of providing fast, high-power linear motion, according to the company.

More details can be found at

Parker Hannifin — Parker Sales UK

With annual sales exceeding $10bn, Parker Hannifin is the world's leading manufacturer of motion and control technologies and systems, providing precision-engineered solutions for a wide variety of commercial, mobile, industrial and aerospace markets.

To meet its customers' needs in motion and control, Parker provides the broadest range of products available from any single supplier. This is supported by expertise in nine major technologies:

  • Hydraulics
  • Pneumatics
  • Electromechanical
  • Filtration
  • Process control
  • Fluid and gas handling
  • Sealing and shielding
  • Climate control
  • Aerospace

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