Product Overview
The Rexroth 4WS2EM10-52/5B11XHET315K31EV-100 (Material No. R901116633) is a high-response, two-stage servo directional valve engineered for precision electrohydraulic motion 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 widely recognized as a benchmark for closed-loop control systems requiring high resolution, fast response times, and superior repeatability. With a nominal size of NG10 (Size 10) and a rated flow capacity of approximately 100 L/min at Δp = 35 bar per land, this servo valve serves as a critical control element in hydraulic systems where accurate position, velocity, force, or pressure regulation is essential.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Servo Directional Valve (Two-Stage, Nozzle-Flapper Pilot with Mechanical Feedback) |
| Model Designation | 4WS2EM10-52/5B11XHET315K31EV-100 |
| Material Number | R901116633 |
| Nominal Size | NG10 (Size 10) per ISO 4401 |
| Operating Pressure | Up to 315 bar (system pressure); Pilot stage rated for high-pressure operation |
| Rated Flow Capacity | ≈ 100 L/min at Δp = 35 bar per metering land |
| Actuation Type | Electrohydraulic — proportional solenoid / torque motor driven pilot stage |
| Spool Configuration | 4-way, 3-position directional spool with closed-center or critical-center options |
| Mounting & Connection | Subplate mounting per ISO 4401-05 / CETOP 5 / NG10 interface |
| Electrical Interface | Integrated valve amplifier (OBE) with analog command input; central electrical connector |
| Filtration Requirement | ISO 4406 cleanliness class 17/15/12 or better recommended for extended service life |
Engineering Features & Advantages
- Precision Performance: The servo directional valve (two-stage, nozzle-flapper pilot with mechanical feedback) delivers precise, repeatable performance with low hysteresis and stable control across the full working range.
- 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 OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
- Rated Capability: Rated for pressure ratings up to 315 bar and flow rates up to 100 L/min, supporting stable operation across the full working range.
Typical Industrial Applications
With a nominal size of NG10 (Size 10) and a rated flow capacity of approximately 100 L/min at Δp = 35 bar per land, this servo valve serves as a critical control element in hydraulic systems where accurate position, velocity, force, or pressure regulation is essential.
PRODUCT IMAGES
REXROTH 4WS2EM10-52/5B11XHET315K31EV-100 / R901116633 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 4WS2EM10-52/5B11XHET315K31EV-100 / R901116633 High-Response Solenoid Directional Valve. This German-made hydraulic component features a high-response pilot control, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
