Bladder Accumulators

Reliable Energy Storage and System Stability

Bladder accumulators are a vital component in many hydraulic systems, offering efficient energy storage, pressure regulation, and shock absorption. Their ability to respond quickly to pressure changes makes them ideal for maintaining system stability and performance under dynamic operating conditions.

At Hydraulics Online, we supply bladder accumulators from a wide range of global manufacturers – including trusted names like Bosch Rexroth, Hydac, OMT, Parker, QHP, SAIP – with impartial advice to help you find the right solution for your application.

Our website shows only a selection of what we supply. For impartial advice and access to our full range of hydraulic components, contact our expert team.

Bladder accumulator. Hydraulic components bladder accumulators product category header on Hydraulics Online.For impartial advice and access to our full range of hydraulic components, contact our expert team.

A bladder accumulator consists of a seamless, high-tensile steel pressure vessel divided internally by a flexible, gas-tight bladder. One side of the bladder is pre-charged with nitrogen gas, while the other side is connected to the hydraulic system.

Here’s how it works:

When system pressure increases, hydraulic fluid enters the accumulator, compressing the gas inside the bladder.
When system pressure drops, the compressed gas expands, pushing fluid back into the system.

This process allows the accumulator to store and release energy as needed, helping to smooth out pressure fluctuations and maintain consistent system performance.

Energy Storage – stores hydraulic energy for later use, reducing pump demand
Shock and Vibration Absorption – dampens pressure spikes and mechanical shocks
Leakage and Volume Compensation – maintains pressure in the event of fluid loss or thermal expansion
Emergency Power Supply – provides backup pressure in case of pump failure

These features make bladder accumulators essential in mobile machinery, industrial automation, marine systems, and more.

Fast response time – ideal for dynamic systems with rapid pressure changes
High efficiency – minimal internal leakage and excellent energy recovery
Compact and lightweight – easy to install in space-constrained environments
Serviceable design – many models allow for bladder replacement and recharging
Wide pressure and volume range – suitable for low to high-pressure systems

What gas is used in bladder accumulators? Typically, dry nitrogen is used due to its inert properties and stability under pressure.

Can the bladder be replaced? Yes, many bladder accumulators are designed for easy servicing, including bladder replacement and gas recharging.

Are bladder accumulators suitable for mobile equipment? Absolutely. Their compact size and fast response make them ideal for mobile and off-highway applications.