The Rexroth SCA series is a sandwich-type meter out pressure compensator, designed for use in conjunction with pilot-operated proportional directional valves. It provides load compensation in service lines A, B or both A+B, forming a meter-out flow control circuit to regulate both negative and positive loads reliably.
Featuring leak-tight closing in the service lines, it enables static load holding capability without additional shut-off valves. The valve adopts standard connection dimensions compliant with DIN 24340 Form A, ISO 4401 and CETOP-RP 121 H, allowing direct stack mounting between the directional valve and the subplate. It is widely applied in industrial hydraulic circuits requiring constant flow control independent of load pressure variations.
Rexroth SCA Key Features
Sandwich Plate Design – Compact stackable structure mounts directly between the proportional directional valve and subplate, eliminating extra piping and reducing overall circuit footprint.
Configurable Load Compensation – Available in A-only, B-only and A+B operation versions to match different circuit layouts and single-sided / double-sided load control requirements.
Stable Meter-Out Regulation – Works with proportional directional valves to maintain a constant pressure drop across the main valve spool, delivering load-independent flow control for both positive and negative loads.
Leak-Tight Load Holding – Integrated poppet structure provides leak-tight shut-off in service ports, supporting sustained load holding without drift in static conditions.
Standard CETOP Mounting – Connection dimensions fully comply with DIN 24340 Form A, ISO 4401 and CETOP-RP 121 H, compatible with standard subplates and proportional valves of corresponding sizes.
Broad Fluid Compatibility – Standard NBR seals for mineral oil circuits; FPM (FKM) seals available on request for phosphate ester (HFD-R) fire-resistant fluid applications.
Rexroth SCA Key Specifications
Valve Type: Sandwich-type meter out pressure compensator
Nominal Sizes: 16, 25
Component Series: 2X
Maximum Operating Pressure:
Ports A1, A2, B1, B2, X1, X2: 315 bar
Ports Y1, Y2: 30 bar
Ports T1, T2: separate tank connection
Maximum Flow:
Size 16: 130 L/min
Size 25: 325 L/min
Mounting: Sandwich plate mounting, conforming to DIN 24340 Form A / ISO 4401 / CETOP-RP 121 H
Hydraulic Fluid: Mineral oil HL, HLP (to DIN 51 524); phosphate ester HFD-R
Standard Seals: NBR; FPM (FKM) seals available on request
Fluid Temperature Range: -20 to +70 °C
Viscosity Range: 15 to 380 mm²/s
Installation Position: Optional
Fluid Cleanliness: NAS 1638 class 7–9, recommended filter retention rate β₁₀ ≥ 75
As a dedicated meter-out pressure compensator for proportional directional valve circuits, the SCA series delivers stable load-independent flow control for stationary industrial hydraulic systems.
Metal Forming & Press Equipment – Ensures consistent ram speed during deep-drawing and stamping processes, compensating for load variations through the full working stroke.
Machine Tool Hydraulics – Matches with proportional directional valves for feed and spindle drive circuits, providing steady speed regulation under varying cutting loads.
Material Test Rigs – Maintains stable flow control for test bench hydraulic systems, supporting accurate load and speed curve calibration.
Metallurgical Auxiliary Drives – Withstands 315 bar continuous operating pressure and cyclic loads for auxiliary hydraulic circuits in rolling mills and continuous casting lines.
Industrial Hydraulic Power Units – Stackable design simplifies manifold assembly for standard power units, reducing circuit complexity and overall installation footprint.
Commonly Requested Material Numbers (MNR)
Below are frequently ordered SCA models. If your part number is not listed, please contact us freely.
Rexroth valve SCA is used in conjunction with a proportional directional valve to form a meter out flow control circuit to control both negative and positive loads. Rexroth compensator SCA is a hydraulic valve with unique functions. The following is a detailed introduction to Rexroth pressure compensator SCA: Bosch Rexroth pressure compensator SCA plays an important role in hydraulic systems. Its main function is to maintain the balance of pressure in the system and ensure its stable operation. This valve achieves precise pressure regulation by precisely controlling the flow of liquid. Compensator SCA has excellent pressure and flow regulation characteristics and can be accurately adjusted according to the system's requirements. This feature enables it to adapt to various complex working conditions and different hydraulic system requirements. In addition, Rexroth pressure valve SCA also has good stability and reliability. It adopts high-quality materials and advanced manufacturing processes, ensuring long-term stable operation and low failure rate. This enables it to maintain excellent performance in harsh working environments. In summary, Rexroth valve SCA is a powerful and stable hydraulic valve. It plays a crucial role in hydraulic systems to ensure stable and efficient operation. Whether in industrial production or other fields, Rexroth valve SCA is an indispensable and important component.
The product features of Rexroth SCA compensator valve mainly include the following points:
High precision control: Using proportional electromagnets as electro-mechanical conversion components, the displacement of the valve core is proportional to the control current, achieving high-precision control. Fast response speed: Due to the optimized valve core structure and advanced processing technology, this series of proportional valves has a fast response speed. High reliability: Key components such as valve cores and valve bodies have undergone precision machining and strict quality testing, resulting in high reliability and durability. Multiple control methods: Different control methods and combinations can be selected according to different application requirements to achieve more flexible control. In summary, the Rexroth SCA series proportional valves have the characteristics of high-precision control, fast response speed, and high reliability, making them suitable for various occasions that require precise control of hydraulic actuator actions.
The Rexroth SCA hydraulic valves are widely used in the industrial field. Specifically, they can be used for various mechanical equipment and systems that require hydraulic drive, such as machine tools, plastic machinery, metallurgical equipment, mining machinery, lifting machinery, etc. These hydraulic valves are favored by many industrial users for their high performance, reliability, and efficiency.
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