HYDAC SB330 Accumulator | SB330-32A1/112U | SB330-20A1/112U | 330 Bar Steel Bladder Type

SB330 Series High-Pressure Steel Bladder Accumulators (20L / 32L)

Product Overview:

The SB330 series is the global industry benchmark for energy storage, pressure pulsation dampening, and fail-safe protection in the advanced hydraulic systems of 2026. Designed with high-strength seamless steel shells, these units are rated for a maximum working pressure of $330 \text{ bar}$. This range features the core $20\text{L}$ and $32\text{L}$ capacities, all equipped with the highly versatile 112U (Standard NBR) compound bladder—the premier choice for metallurgical machinery, heavy presses, and automated power stations.

Core Model Specifications:

• SB330-32A1/112U-330A:

  • Volume: $32\text{L}$.

  • Feature: Balances installation footprint with energy efficiency; a staple for industrial power units.

• SB330-20A1/112U-330A:

  • Volume: $20\text{L}$.

  • Feature: Compact high-pressure design providing robust instantaneous flow compensation with ultra-fast response.

Key Technical Advantages:

• $330 \text{ bar}$ Peak Pressure Integrity: Shells are precision-forged from premium seamless alloy steel, complying with 2026 international pressure vessel fatigue standards to ensure structural security under continuous heavy-load pulsations.

• 112U High-Performance NBR Bladder: Features a standard Nitrile (NBR) formulation for superior wear resistance and ultra-low gas permeability, effectively extending nitrogen pre-charge retention intervals.

• Instantaneous Dynamic Response: The low-inertia bladder structure responds immediately to system fluctuations, neutralizing high-frequency pump ripples ($>10\text{Hz}$) and protecting sensitive downstream valves.

• Modular A1 Interface: Standardized A1 threaded fluid ports ensure $100\%$ physical interchangeability with mainstream global hydraulic accessories and piping systems.

• Universal Energy Storage: Operates both as an emergency power source and a system damper, significantly boosting machine energy efficiency and reducing operational noise.

Detailed Technical Specifications:

• Nominal Volumes: $20 \text{ L} / 32 \text{ L}$.

• Max Working Pressure ($P_{max}$): $330 \text{ bar}$ ($33 \text{ MPa}$).

• Bladder Compound Code: 112U (Standard Nitrile Rubber).

• Shell Material: High-Strength Seamless Steel.

• Connection Style: Standard A1 Threaded Port.