Product Overview
The Rexroth LC 25 A40D7X (Material Number: R900912581) is a high-performance two-stage logic cartridge valve designed for demanding industrial hydraulic systems. As a key component in Rexroth’s modular valve family, this logic cartridge functions as a pressure and flow control element that, when combined with a suitable cover plate, enables directional, pressure, and flow control functions within a manifold block. The LC series is engineered for high flow rates and fast response, making it ideal for compact hydraulic power units and complex circuit designs where space and efficiency are critical. This valve operates on a poppet-type seating principle, ensuring zero leakage when closed and providing reliable, repeatable performance in high-pressure industrial environments.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Logic Cartridge Valve (Flow Control & Modular Valve) |
| Model Designation | LC 25 A40D7X / R900912581 |
| Nominal Size | NG25 (ISO 7368) |
| Operating Pressure | Up to 420 bar (6000 psi) dynamic; 500 bar static |
| Nominal Flow Rate | Up to 450 L/min (dependent on circuit and cover) |
| Mounting & Connection | Standard ISO 7368 cartridge cavity; manifold mounting |
| Sealing Principle | Poppet-type, seat-tight (zero leakage when closed) |
| Control Area Ratio | A40D7X (specific pilot ratio per Rexroth coding) |
| Hydraulic Fluid | Mineral oil based hydraulic fluid (HL, HLP, HVLP per DIN 51524) |
| Fluid Temperature Range | -20°C to +80°C (standard seals) |
| Viscosity Range | 10 to 380 mm²/s (cSt) recommended |
Engineering Features & Advantages
- Precision Flow Control: The poppet-type logic element provides fast, precise response to pilot pressure changes, enabling accurate directional and flow control when paired with a functional cover.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
This valve operates on a poppet-type seating principle, ensuring zero leakage when closed and providing reliable, repeatable performance in high-pressure industrial environments.
PRODUCT IMAGES
Rexroth LC 25 A40D7X / R900912581 Logic Cartridge Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH LC 25 A40D7X / R900912581 Check Valve. This German-made hydraulic component features a poppet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.