HYDAC SB330 Accumulator | SB330-4A1/112U | SB330-6A1/112U | 4L 6L 330Bar Bladder

SB330 Series High-Pressure Bladder Accumulators (4L / 6L)

Product Overview:

The SB330 series is the industry benchmark for pressure pulsation dampening, energy storage, and emergency protection in the industrial hydraulic systems of 2026. This range includes the highly popular $4\text{L}$ and $6\text{L}$ compact models, rated for a maximum pressure of $330 \text{ bar}$. Equipped with the 112U (Standard NBR) bladder, these units offer exceptional wear resistance and chemical compatibility, making them ideal for machine tool presses, hydraulic power units, and automated production lines.

Core Model Specifications:

• SB330-4A1/112U-330A (incl. 4.0 spec):

  • Volume: $4\text{L}$.

  • Bladder Material: 112U (Premium Nitrile Rubber for mineral oil environments).

  • Pressure: Rated for $330 \text{ bar}$ maximum working pressure.

• SB330-6A1/112U-330A:

  • Volume: $6\text{L}$.

  • Configuration: Features the standard A1 interface for superior flow release capability.

Key Technical Advantages:

• $330 \text{ bar}$ Industrial High-Pressure Standard: Shells are forged from seamless alloy steel, complying with 2026 international pressure vessel fatigue standards to ensure structural integrity under high-frequency impact.

• 112U High-Performance Bladder: Formulated with specialized NBR for ultra-low gas permeability, ensuring long-term nitrogen pre-charge stability and significantly reducing maintenance intervals.

• Instantaneous Power Compensation: The rapid-response bladder structure effectively dampens pump ripples and provides auxiliary power during unloading, boosting system energy efficiency.

• Compact Space Layout: The 4L and 6L designs balance volume and size, perfect for integration into the space-constrained modular hydraulic stations of 2026.

• High-Reliability A1 Interface: Standard threaded connections ensure $100\%$ physical compatibility with mainstream global hydraulic accessories for rapid installation.

Detailed Technical Specifications:

• Nominal Volumes: $4 \text{ Liters} / 6 \text{ Liters}$.

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

• Bladder Material: Standard NBR (112U).

• Compatible Mediums: Mineral oils, synthetic fluids, and non-corrosive industrial liquids.

• Connection Style: Standard A1 Threaded Port.