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Parker Hannifin has launched a compact electro-hydraulic actuator that provides a complete, free-standing actuation system for applications such as military, aerospace and general industrial.

In addition, the electro-hydraulic actuator (EHA) is said to be ideal for space-critical, portable and remote applications in the marine and construction sectors.

The Parker Compact EHA is a fully self-contained, double-acting actuator offering a high power density at operating speeds up to 130mm/sec.

This is said to make it ideal for use as an alternative to conventional hydraulic, electro-mechanical and pneumatic systems.

The design of the Parker Compact EHA sees all components integrated into the monobloc housing.

The unit comprises a high-performance, double-acting hydraulic actuator, driven via a reversible gear pump, which is powered by an integrated 12V or 24V DC 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 for ease of 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 aquathane sealing elements to prevent both leakage and the ingress of contaminants, while 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 by Parker fully tested, flushed and filled with fluid ready for operation, so it is fully sealed and requires no subsequent maintenance.

The design and construction of the Compact EHA enables it to produce high levels of force – up to 22.25kN – at operating speeds of more than 100m/sec, depending on load conditions.

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

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

Parker is also offering the Compact EHA with a range of options for motor, pump, bore and stroke length, making the system an ideal choice for machine builders looking for a simple and efficient method of providing fast, high-power linear motion.

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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