Product Overview
The Rexroth 4WS2EM10-52/45B11ET315K31EV (Material Number: R900909297) is a high-response, two-stage servo directional valve engineered for precision electrohydraulic control in demanding industrial applications. Manufactured by Bosch Rexroth, this valve operates on a nozzle-flapper pilot stage with mechanical feedback, delivering exceptional dynamic response and precise flow metering proportional to the electrical input signal. The 4WS2EM series is designed for closed-loop position, velocity, and force control systems where accuracy, repeatability, and fast response times are critical. With a nominal flow capacity of 45 L/min at a pressure differential of 35 bar per land, this valve serves as a vital control element in high-performance hydraulic systems requiring exacting directional and flow control.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Servo Directional Valve (Two-Stage, Nozzle-Flapper Pilot) |
| Model Designation | 4WS2EM10-52/45B11ET315K31EV / R900909297 |
| Nominal Flow Rate | 45 L/min (at Δp = 35 bar per land) |
| Operating Pressure | Up to 315 bar (system pressure, port P) |
| Pilot Stage Principle | Nozzle-flapper with mechanical feedback |
| Actuation | Proportional solenoid / torque motor with integrated electronics (ET version) |
| Mounting & Connection | ISO 4401 / CETOP subplate mounting, NG10 interface |
| Spool Configuration | Critical center position, zero-lap spool for high-precision metering |
| Electrical Interface | Integrated amplifier card, ±10 V or 4–20 mA command signal |
| Filtration Requirement | ISO 4406 class 17/15/12 or better (β10 ≥ 75 recommended) |
Engineering Features & Advantages
- Precision Performance: The nozzle-flapper pilot stage with mechanical feedback delivers extremely fast dynamic response and highly accurate flow metering proportional to the input signal, enabling superior closed-loop control of position, velocity, and force.
- High-Response Dynamics: Designed for applications requiring fast step responses and high-frequency response, ensuring minimal lag in critical motion control sequences.
- Industrial Reliability: Constructed for continuous duty with durable, corrosion-resistant materials and proven engineering for maximum system uptime.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
With a nominal flow capacity of 45 L/min at a pressure differential of 35 bar per land, this valve serves as a vital control element in high-performance hydraulic systems requiring exacting directional and flow control.
PRODUCT IMAGES
REXROTH 4WS2EM10-52/45B11ET315K31EV / R900909297 Servo Directional 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 4WS2EM10-52/45B11ET315K31EV / R900909297 High-Response Directional Control Valve. This Germany-made hydraulic component features a high-response pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
