Product Overview
The Rexroth 4WS2EM10-52/50B11XHET315K31EV-100 (Material No. R901115635) is a high-response, two-stage servo directional valve engineered for precision electrohydraulic control of position, velocity, force, and pressure in demanding closed-loop industrial systems. The valve operates on a nozzle-flapper pilot principle: an electrical command signal drives a torque motor that deflects the flapper between two nozzles, generating a differential pilot pressure that positions the main spool. The main spool then meters flow proportionally to the command signal, delivering exceptionally fast dynamic response, minimal hysteresis, and high resolution. With a nominal size of NG10 (Size 10) and a rated flow of approximately 50 L/min at a 31.5 MPa (315 bar) pressure rating, this servo valve is purpose-built for applications requiring precise, repeatable control of high-pressure hydraulic actuators.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Servo Directional Valve (Two-Stage, Nozzle-Flapper Pilot) |
| Model Designation | 4WS2EM10-52/50B11XHET315K31EV-100 |
| Material Number | R901115635 |
| Nominal Size | NG10 (Size 10) |
| Rated Flow | ~50 L/min at Δp = 7 MPa (70 bar) per land |
| Operating Pressure | Up to 31.5 MPa (315 bar) rated |
| Pilot Stage | Torque motor with nozzle-flapper assembly |
| Main Stage | Four-way spool with critical metering lands |
| Mounting & Connection | ISO 4401 / DIN 24340 NG10 subplate interface |
| Electrical Interface | Proportional solenoid / torque motor with integrated position feedback |
| Seal Material | FKM (Viton) — compatible with mineral oil based hydraulic fluids |
Engineering Features & Advantages
- Precision Performance: The servo directional valve (two-stage, nozzle-flapper pilot) delivers precise, repeatable performance with low hysteresis and stable control across the full working range.
- 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 OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
With a nominal size of NG10 (Size 10) and a rated flow of approximately 50 L/min at a 31.5 MPa (315 bar) pressure rating, this servo valve is purpose-built for applications requiring precise, repeatable control of high-pressure hydraulic actuators.
PRODUCT IMAGES
REXROTH 4WS2EM10-52/50B11XHET315K31EV-100 / R901115635 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 4WS2EM10-52/50B11XHET315K31EV-100 / R901115635 Solenoid Operated Directional Spool Valve. This German-made hydraulic component features a high-performance spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
