What are bladder accumulators?
Techknow bladder accumulators store hydraulic energy in a pressurised gas-separated bladder and release it instantly when your system demands power. They reduce pulsations, absorb shocks, provide emergency fluid reserve and help cut maintenance costs — ideal for industrial and mobile hydraulic systems.
Built from high-tensile steel shells with robust elastomer bladders, our accumulators are engineered to withstand high pressures and demanding environments. With options in multiple volumes, pressure ranges, and certified finishes (CE, ASME, PED), they deliver consistent performance and longer service life across a wide range of hydraulic applications.
Working Principle of Hydraulic Bladder Accumulators
A pre-charged bladder separates inert gas (usually nitrogen) from hydraulic fluid. When circuit pressure drops, the gas expands and forces fluid back into the circuit, delivering immediate energy. Design practice keeps a minimum oil cushion at the bladder base to avoid mechanical contact and ensure longevity.
Bladder Accumulators – Variants & Compatibility
Bladder Accumulators - Hydraulic bladder accumulators, Olaer bladder accumulators, EPE bladder accumulators, Hydac bladder accumulators, Bosch bladder accumulators, Rexroth bladder accumulators, NXQ bladder accumulators are widely used in industrial applications. Additionally, bladder type accumulators are versatile and reliable for energy storage.
We, being Bladder Accumulators Distributor, Bladder Accumulators Seller, and Bladder Accumulators Dealer, are able to provide reliable products from our Bladder Accumulators Manufacturers
Typical Specifications of Bladder Accumulators
- Pressure range: 20 — 1000 bar
- Nominal volume: 0.63 — 600 litres
- Flow rate: up to 100 l/s (≈ 6000 lpm) depending on model
- Temperature range: -40 °C to +100 °C (seal dependent)
- Shell materials: Carbon steel, SS 316L, specialty alloys
- Elastomers: NBR (Perbunan), IIR (Butyl), ECO, FKM (Viton)
- Connections: Threaded, SAE/ANSI/ISO flanges; custom ports available
- Coatings & finishes: Ni-plating, epoxy/anti-corrosion coatings
- Certifications: CE / PED, ASME VIII Div 1, U-Stamp, ABS (as applicable)
Key Features & Benefits of Bladder Accumulators
- Fast discharge with immediate response
- Compact design with high flow capability
- Low maintenance and long service life
- Suitable for hydro-pneumatic and energy recovery systems
- Repairable designs and spare-bladder options
- Available with position sensing for piston-based systems where needed
Typical Applications of Bladder Accumulators
- Energy storage for intermittent-operation systems
- Emergency reserve for hydraulic circuits
- Leakage compensation and volume make-up
- Shock and vibration absorption in presses, turbines, and mobile equipment
Service, Spares & Support
We supply charging kits, spare bladders, valves, mounting hardware and full commissioning services. On-site testing and maintenance contracts available. Contact our engineering team for compatibility checks and retrofit suggestions.
We also provide below-mentioned types of Accumulators and related accessories designed to ensure safe operation, proper mounting, and effective handling of the Accumulators.
FAQ
A bladder accumulator is a hydraulic energy storage device comprising a seamless cylindrical steel shell with a rubber bladder mounted inside that acts as a gas-proof screen. The bladder separates the fluid and gas sections, and is pre-charged with inert gas to a specified pressure. When circuit pressure drops, the inert gas expands and forces the stored fluid back into the hydraulic circuit, providing immediate energy release.
- Pressure range: 20 to 1000 bar
- Nominal volume: 0.63 to 600 liters
- Flow rate: up to 100 l/s (3000 lpm)
- Temperature range: -40°C to +100°C
- Shell materials: Carbon steel, SS 316L, or carbon steel with internal Ni-plating
- Bladder materials: Perbunan (NBR), Butyl (IIR), Ethylene oxide (ECO), Viton (FPM)
- Energy storage for intermittent operating systems
- Emergency energy reserves
- Compensation of leakage losses
- Shock and vibration absorption
- Volume compensation due to system pressure and temperature changes
- Hydro-pneumatic applications requiring pulsation damping
- Fast discharge capability
- Immediate and instantaneous response
- No pressure differential between gas and fluid sides
- Compact design with minimal maintenance requirements
- Wide temperature adaptation range
- Suitable for low to high pressure applications
- Fully repairable design
Our accumulators maintain a minimum 10% oil volume between the bladder bottom and oil valve top to prevent bladder damage during gas expansion. They are also available with Transfer Barrier versions that can work with backup N2 bottles for enhanced safety and reliability.
Yes, Techknow Engineering Enterprise provides comprehensive support including spare parts, servicing, and system integration services. Our experienced team can assist with maintenance requirements and ensure optimal performance of your accumulator systems.
Absolutely. We offer customization options including various coatings (primer, Ni plating, internal rubber lining, offshore prime coat, plastic coatings), different connection types, and manifold block configurations with flanged fluid ports to meet your specific application needs.
Contact our technical team at Techknow Engineering Enterprise for expert consultation. We'll assess your pressure requirements, flow rates, temperature conditions, and application specifics to recommend the optimal bladder accumulator solution for your hydraulic system.
Certified designs • Custom engineering • On-site commissioning • Fast delivery across India