Rexroth A7VK Series Metering Pump | A7VK0028MA/10MRSL4P550-0 | Polyurethane Foaming Pump

Rexroth A7VK Series High-Pressure Polyurethane Metering Pump

Product Overview: The Rexroth A7VK series is a high-pressure axial piston variable pump specifically engineered for Polyurethane (PU) processing equipment. As the core metering unit in foaming systems, this series is widely utilized in refrigerator insulation production, automotive interior foaming, and sandwich panel lines. The core model A7VK0028MA/10MRSL4P550-0, with its unique Bent-Axis architecture, is designed to handle high-viscosity media while ensuring exceptional metering precision and repeatability—making it the industry standard for PU applications worldwide.

Key Technical Advantages:

• Exceptional Metering Precision: The A7VK series is purpose-built for precision dosing. Through manual or automatic adjustment mechanisms, it delivers microliter-level flow control, ensuring the ratio of Isocyanate to Polyol remains accurate and stable throughout the foaming process.

• Optimized for High-Viscosity Media: Unlike standard hydraulic pumps, the A7VK features specialized port plates and sealing designs. The A7VK0028 model easily handles high-viscosity liquid circulation, maintaining peak volumetric efficiency even under frequent pressure fluctuations.

• High-Pressure Durability: Rated for a continuous operating pressure of 250 Bar (25 MPa). Its reinforced bearing groups and seal structures are optimized for the high-frequency, continuous duty cycles of foaming machines, significantly reducing failure rates caused by media crystallization.

• Compact Series 10 Design: The classic Series 10 design provides an ultra-compact installation footprint. Its MA control (Manual Adjustment) logic is simple and reliable, making it ideal for integration into space-constrained foaming machine frames.

Specific Models & Technical Parameters:

• Core Series: A7VK Series, A7V Series, A7VK0028.

• Detailed Config Code: A7VK0028MA/10MRSL4P550-0.

• Displacement: 28 cm³/rev.

• Pressure Specs: Rated at 250 Bar; Peak cycles up to 315 Bar.

• Control Method: MA (Manual Adjustment) or Speed Sensing.

• Applications: PU foaming machines, two-component spraying equipment, and chemical high-pressure metering.