The accumulator bladder is an important component of a bladder-type accumulator and plays a crucial role in storing energy, stabilizing pressure, and absorbing shocks. It is made of rubber and possesses flexibility, minimal deformation, high strength, and resistance to oil, acids, and alkalis. To facilitate replacement, the top of the accumulator is generally designed with a large opening structure.
Accumulator working principle:
When the pressure in the hydraulic system increases, the liquid enters the accumulator and compresses the gas inside it. Conversely, when the pressure decreases, the compressed gas expands, pushing the liquid back into the system circuit, thereby storing and releasing energy.
Common materials used for accumulator bladders:
1. Nitrile rubber (NBR): It has good oil resistance, wear resistance, and elasticity, making it suitable for general hydraulic oil applications.
2. Butyl rubber (IIR): It is oil-resistant, heat-resistant, and has good aging resistance, making it cost-effective. It is suitable for high-temperature hydraulic oil environments, such as turbine fuel systems.
3. Fluorocarbon rubber (FKM): It offers excellent oil resistance, high-temperature resistance, and good chemical corrosion resistance. It is suitable for environments that require high oil and temperature resistance, such as hydraulic systems using synthetic hydraulic oils.
4. Hydrogenated nitrile rubber (HNBR): It combines the advantages of NBR and FKM, providing oil resistance, high-temperature resistance, and good ozone resistance. It is widely used in the hydraulic and automotive industries.
Note: The choice of material for the accumulator bladder significantly affects its performance and suitability for different environments.
Rubber Bladder Specification for Reference | ||||
Bladder Size | Optional Bladder Material | Length | Connection Size | Accumulator Diameter |
20L | NBR / IIR / FKM | 380mm | M30×1.5mm | Φ299mm |
25L | NBR / IIR / FKM | 470mm | M30×1.5mm | Φ299mm |
40L | NBR / IIR / FKM | 740mm | M30×1.5mm | Φ299mm |
63L | NBR / IIR / FKM | 1180mm | M30×1.5mm | Φ299mm |
80L | NBR / IIR / FKM | 1440mm | M30×1.5mm | Φ299mm |
100L | NBR / IIR / FKM | 1880mm | M30×1.5mm | Φ299mm |
> Withstand the high temperature of the oil to ensure long-term use in a high-temperature environment.
> The design of the large opening structure makes the bladder easier to replace, improving the convenience of system maintenance.
> The bladder has minimal deformation and high strength, allowing it to withstand high pressure.
> The high-quality material used in the bladder provides good resistance to oil, acids, and alkalis.
> Safe and reliable, with a one-piece molded construction, which extends its lifespan and reduces the risk of rupture.


> Storing energy and stabilizing hydraulic pressure in hydraulic systems.
> Construction machinery and reduce system load.
> Aerospace hydraulic systems to improve system response speed and stability.
> Manufacturing equipment such as hydraulic presses and injection molding machines to smooth system operation.
> Hydraulic system of ships to reduce system impact and improve navigation stability.
Yoyik offers different types of Hydraulic Accumulators for industrial users:
Rubber Bladder NXQ-A-10/31.5-L-EH
Bladder Acummulator Low Bfpt NXQ A10/10 F/Y
Bladder NXQ.A-25/31.5-L-EH
Bladder NXQ-AB-100/10
Accumulator Bladder For Eh Oil Tank NXQ-AB-10/31.5-L-E
Rubber Bladder For St Low Pressure Accumulator NXQ A-25/31.5-L-EH-S
Low Voltage Accumulator Assembly 0508.919T0602.AW
Seal Kit For Accumalator NXQA.25/31.5
Accessories For Accumulator NXQ-A1.6/20-H-HT
Screw Pump HSNH210-36N
Accumulator Bladder NXQ A 10/31.5
Accumulator Bladder And Seal Ring NXQ-A-16/20-L-Y
Non-Return Valve S10P5.0
Seal Kit NXQ-A-10/20-L-EH
Dc Lub Oil Pump 125LY23-4
Standard & solid packaging ensures your goods safety.

- ABOUT US -
Dongfang Yoyik Engineering Co., Ltd is located in Deyang, Sichuan, China's heavy equipment base, was founded in 2004. The company is a professional power plant spare parts manufacturer and supplier. Our products are applicable for many thermal power plants, hydropower plants, metallurgic industrial power plant, cement plant power house, aluminum plant power house, and coal mill power plants.

Yoyik is the exclusive agent of W.M. Nugent CO Inc for selling Nugent filter elements and filtration system products in China. The company also has great advantages in of many hydraulic products, including pumps, valves, sealing materials, etc. the brands include Eaton, Vickers, Moog, star, copaltite, temp-tite, 707, etc.

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