Product Overview
The Rexroth 4WS2EM10-51/60B11ET315K31EV (Material Number: R900949286) is a high-response, two-stage directional servo valve manufactured by Bosch Rexroth. Engineered for precision electrohydraulic control, this valve utilizes a torque motor-driven pilot stage with a mechanical feedback mechanism to position the main spool with exceptional accuracy. It is designed to deliver superior dynamic response, high resolution, and precise flow control in demanding closed-loop industrial applications. As a critical component in sophisticated hydraulic systems, it translates low-power electrical input signals into proportional hydraulic flow and pressure outputs, ensuring exacting motion control and process reliability.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Directional Servo Valve (Two-Stage, Mechanical Feedback) |
| Model Designation | 4WS2EM10-51/60B11ET315K31EV |
| Material Number | R900949286 |
| Nominal Size (NG) | NG10 (Size 10) |
| Operating Pressure | Up to 315 bar (Rated), Peak 350 bar |
| Nominal Flow Rate | 60 L/min at Δp = 70 bar per land |
| Control Signal | Analog, ±10 V DC or ±100 mA (via amplifier) |
| Mounting & Connection | ISO 4401-05 / CETOP 5 Subplate Mounting |
| Electrical Interface | Component plug, 7-pin (K31EV) |
| Seal Material | NBR (Nitrile Rubber), suitable for mineral oil-based fluids |
Engineering Features & Advantages
- Precision Performance: The two-stage design with mechanical feedback ensures high resolution, minimal hysteresis, and excellent repeatability for precise position, velocity, and force control in closed-loop systems.
- High Dynamic Response: The torque motor pilot stage provides fast response times and high spool actuation forces, enabling rapid system cycling and accurate tracking of complex command signals.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction that resists contamination and maintains performance over extended service intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM Rexroth 4WS2EM series servo valves, ensuring drop-in replacement without system modification.
- Direct Fit Replacement: Precision-manufactured to original Rexroth specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
As a critical component in sophisticated hydraulic systems, it translates low-power electrical input signals into proportional hydraulic flow and pressure outputs, ensuring exacting motion control and process reliability.
PRODUCT IMAGES
Rexroth 4WS2EM10-51/60B11ET315K31EV / R900949286 Directional Servo 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 4WS2EM10-51/60B11ET315K31EV / R900949286 Proportional Directional Valve. This Germany-made 24V DC hydraulic component features a 4-way, 3-position design with integrated electronics, delivering leak-free, reliable fluid control for heavy-duty industrial systems.