Product Overview
The Rexroth LC 40 DB20E7X (Material Number: R900938012) is a high-performance two-stage logic cartridge valve designed for demanding industrial hydraulic systems. As part of the Rexroth LC series, this component functions as a pilot-operated directional control element, utilizing a poppet-type main stage that is controlled by a smaller pilot valve. The “DB20” designation indicates a specific pilot control configuration, typically a pressure relief or directional function, while “E7X” refers to the component series. This logic cartridge valve is engineered to manage high flow rates with minimal pressure drop, providing precise control over actuator movement and system pressure. It is a critical component in manifold-based hydraulic circuits, offering a compact, leak-free solution for complex directional and pressure control tasks.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Logic Cartridge Valve (Directional Control) |
| Model Designation | LC 40 DB20E7X / R900938012 |
| Nominal Size (NG) | NG 40 (SAE 2″ / ISO 40) |
| Operating Pressure | Up to 420 bar (6,090 psi) for main stage |
| Pilot Pressure Range | Standard industrial pilot range (typically 10–50 bar) |
| Mounting & Connection | Standard ISO 7368 cartridge cavity (NG 40) |
| Sealing Material | NBR (Nitrile) / FKM (Viton) options available |
| Flow Direction | Bi-directional (dependent on pilot configuration) |
Engineering Features & Advantages
- Precision Performance: The two-stage logic design allows for high flow capacity with extremely fast response times and minimal pressure drop, ensuring precise control of large hydraulic actuators.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, featuring a robust poppet and seat design that provides zero-leakage sealing when closed.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring seamless integration into existing Rexroth manifolds and systems.
- Compact Manifold Design: The cartridge construction eliminates external piping, reducing potential leak points and saving valuable installation space in complex hydraulic power units.
- Versatile Control: The DB20 pilot configuration offers reliable pressure and directional control, making it adaptable to a wide range of circuit requirements.
Typical Industrial Applications
This Rexroth logic cartridge valve is widely utilized in heavy-duty industrial scenarios, including plastic injection molding machines for precise clamp and injection control, metallurgical presses for high-pressure forming operations, construction and marine hydraulics for reliable actuation of heavy loads, and CNC machine tools where accurate directional control and fast response are critical for productivity.
PRODUCT IMAGES
Rexroth LC 40 DB20E7X / R900938012 Logic Cartridge Valve
âš¡ 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 40 DB20E7X / R900938012 Logic Cover. This Germany-made hydraulic component features a 2-way logic cartridge design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.