Product Overview
The Rexroth 4WS2EM10-52/75B11XHET315K31EV (Material Number: R901029927) is a high-response, two-stage servo directional valve engineered for precise electrohydraulic control of position, velocity, force, and pressure in demanding industrial motion systems. Manufactured by Bosch Rexroth, this valve operates on a nozzle-flapper pilot principle with mechanical feedback, where a torque motor drives the first-stage flapper to modulate pilot pressure, which in turn displaces the main spool proportionally to the electrical command signal. With a nominal flow capacity of 75 L/min at a pressure differential of 70 bar per land, this servo valve delivers exceptional dynamic response and fine metering resolution, making it a critical control element in closed-loop hydraulic systems requiring high bandwidth and repeatable accuracy.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Servo Directional Valve (Two-Stage, Nozzle-Flapper Pilot with Mechanical Feedback) |
| Model Designation | 4WS2EM10-52/75B11XHET315K31EV / R901029927 |
| Nominal Flow Rate | 75 L/min at Δp = 70 bar per metering land |
| Operating Pressure | Up to 315 bar (system pressure, per model code designation) |
| Spool Configuration | 4-way, 3-position directional spool with zero-lap critical geometry |
| Actuation Type | Electrohydraulic — torque motor driven first stage with inductive position feedback |
| Mounting & Connection | ISO 4401 / DIN 24340 standard subplate mounting, NG10 interface |
| Electrical Interface | Integrated valve amplifier with command signal input (model-specific connector) |
| Filtration Requirement | ISO 4406 cleanliness class 16/13 or better recommended for servo operation |
Engineering Features & Advantages
- Precision Performance: The nozzle-flapper pilot stage with mechanical feedback delivers extremely fine spool positioning resolution, enabling accurate metering of flow and directional control for high-bandwidth closed-loop servo applications.
- High Dynamic Response: Optimized torque motor and low-inertia first-stage design provide fast step response and high frequency response, essential for position and force control loops in high-cycle industrial machinery.
- Integrated Electronics: The onboard valve amplifier (designated by the “E” in the model code) simplifies system integration by accepting standard analog command signals and providing closed-loop spool position control without external amplifier cards.
- 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 flow capacity of 75 L/min at a pressure differential of 70 bar per land, this servo valve delivers exceptional dynamic response and fine metering resolution, making it a critical control element in closed-loop hydraulic systems requiring high bandwidth and repeatable accuracy.
PRODUCT IMAGES
REXROTH 4WS2EM10-52/75B11XHET315K31EV / R901029927 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 4WS2EM10-52/75B11XHET315K31EV / R901029927 Solenoid Directional Control Valve. This Germany-made 315V hydraulic component features a high-response pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
