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Olaer

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Olaer

Olaer is a leading manufacturer of hydraulic accumulators, cooling systems, and hydraulic accessories, with a globally recognized reputation in the hydraulic industry. The company, with production facilities in Europe and operating under the Parker Hannifin group, delivers an extensive range of accumulators for energy storage, shock absorption, pump protection, and emergency power management in hydraulic systems. At Verkopershulp.nl, more than 765 Olaer products are available.

Olaer's core range includes membrane accumulators, bladder accumulators, piston accumulators, and diaphragm accumulators for hydraulic applications. Membrane accumulators are compact and suitable for pressures up to 350 bar, while bladder accumulators offer larger volumes (up to 100 liters) for applications requiring more energy storage. Piston accumulators provide the best gas-liquid separation for precision applications.

Olaer accumulators are used as energy buffers in hydraulic systems to absorb peak demand, as shock absorbers during sudden pressure surges, as emergency power sources during power failure (for safely executing emergency operations), and for fluid compensation during temperature changes. Products are available in working volumes from 0.075 liters to 450 liters and at pressure levels up to 1000 bar.

The Olaer EHV series and EHN series bladder accumulators comply with the European Pressure Equipment Directive (PED 2014/68/EU) and are approved by TÜV and other recognized inspection bodies. They are available in carbon steel, stainless steel, and aluminum materials, with gas charging pressures up to 350 bar nitrogen. Optional accessories such as gas valve kits, accumulator mounts, and safety blocks complete the range.

At Verkopershulp.nl, you will find the complete Olaer range for direct delivery. Our technical team advises you on the correct accumulator dimensioning, material version, and safety certification for your hydraulic application.

Olaer also develops membrane and bladder accumulators for special applications in the oil and gas industry, offshore installations, and aviation. These accumulators are available in high-grade alloys such as duplex stainless steel and Inconel for resistance to corrosive media and extreme environments. Olaer works closely with customers in the offshore sector to design custom accumulator systems that comply with DNV, Lloyd's Register, and other marine qualification standards.

The Olaer technical support service provides assistance with accumulator dimensioning, fill medium selection, and material specification, ensuring customers can verify that the chosen accumulator meets all PED, EN 14359, and other applicable standards. At Verkopershulp.nl, you will find not only individual Olaer components but also gas charging kits, mounting sets, and technical advice for correct installation and safe use of hydraulic accumulators in accordance with applicable regulations.

History

Olaer was founded in Paris, France, in 1949 by Fernand Labastie as a manufacturer of hydraulic accumulators and cooling systems. The company grew rapidly due to increasing demand for hydraulic energy storage in the post-war European industry. In the 1960s and 1970s, Olaer became the market leader in hydraulic accumulators in Europe and expanded its product line to multiple accumulator types and pressure levels. After several ownership changes, Olaer was ultimately integrated into Parker Hannifin Corporation, one of the largest manufacturers of motion and control technologies in the world. Today, the Olaer brand name remains synonymous with high-quality hydraulic accumulators. After integration into Parker Hannifin, Olaer was incorporated into the Motion and Control Technologies division, with production facilities in France, the UK, and Sweden forming the basis for global distribution of the Olaer brand. Parker Hannifin's global distribution network strengthened the availability of Olaer products for customers worldwide, including the Benelux.

Product Categories

  • Actuator
  • Connector
  • Cooler
  • Filter
  • Gauge
  • Gear Pump
  • Heat Exchanger
  • Motor
  • Piston
  • Pump
  • Safety Valve
  • Seal & Gasket
  • Switch
  • Valve

Applications

  • Hydraulic energy storage and peak demand absorption
  • Emergency power and emergency operation systems
  • Shock absorption and pressure pulse damping
  • Leakage compensation in closed circuits
  • Hydraulic presses and stamping installations
  • Mobile hydraulics in construction machinery
  • Offshore and marine hydraulic systems
  • Wind turbine hydraulic pitch systems
  • Industrial robotics and manipulators
  • Aircraft ground support equipment
  • Hydraulic test bench installations
  • Industrial automation and machine control

Frequently Asked Questions

What are the advantages of bladder accumulators versus membrane accumulators from Olaer?
Bladder accumulators offer larger volumes (1-100 liters) for more energy storage, are suitable for faster work cycles (higher flow), and have better gas-liquid separation through the rubber bladder. Membrane accumulators are more compact (0.075-4 liters), less expensive, and suitable for applications with low volumes and high pressures up to 350 bar.
How do I size an Olaer hydraulic accumulator for my application?
Accumulator sizing requires knowledge of the required effective volume (useful fluid volume), the minimum and maximum working pressure, and the desired gas pre-charge pressure. Our technical team is happy to help you calculate the correct accumulator size based on your system parameters and energy storage requirements.
Do Olaer accumulators comply with the European PED pressure directive?
Yes, all Olaer hydraulic accumulators with a content above the threshold values of PED 2014/68/EU are TÜV-certified and CE-marked in accordance with the European Pressure Equipment Directive. Accompanying conformity documentation and material certificates are available on request.
What gas are Olaer accumulators filled with?
Olaer accumulators are filled with nitrogen (N2) as an inert, non-flammable gas. Never use oxygen or compressed air due to explosion hazard. The gas pre-charge pressure is determined by the desired minimum working pressure of the hydraulic system and is typically 60-90 percent of the minimum system pressure.
How quickly are Olaer accumulators delivered through Verkopershulp.nl?
Common Olaer accumulators in stock are shipped the same business day. Delivery in the Netherlands is typically within 1-2 business days. Less common volumes or special material versions are typically delivered within 5-15 business days.
Are gas charging kits available for recharging Olaer accumulators?
Yes, we supply complete Olaer gas charging kits for checking and recharging the nitrogen gas pressure in hydraulic accumulators. These kits are available for all common gas valve types and feature a precise pressure gauge and automatic shutoff.
Does Olaer also offer accumulator safety blocks?
Yes, Olaer delivers accumulator safety blocks that automatically shut off the accumulator connection and safely relieve accumulator pressure when the machine is switched off. This is mandatory for machines where accumulator pressure poses a safety risk for maintenance personnel.
When should an Olaer accumulator be replaced or overhauled?
Hydraulic accumulators should be periodically inspected in accordance with local safety regulations (typically annually or every five years for pressure vessels). The rubber bladder or membrane should be replaced when the maximum service life is exceeded (typically 10-15 years) or when gas is detected in the hydraulic system.