Product Overview
The Rexroth 4WS2EM10-52/75B11XHT315K31EV (material number R901039619) is a high-response, two-stage directional servo valve engineered by Bosch Rexroth for precise electrohydraulic control of position, velocity, pressure, and force in demanding closed-loop industrial systems. The valve operates on a nozzle-flapper pilot stage 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 spool displacement is fed back mechanically to the flapper via a feedback spring, producing a proportional, high-resolution flow output with exceptional dynamic response and minimal hysteresis. With a nominal size of NG10 and a rated flow of 75 L/min at a 31.5 bar (315 bar class) pressure differential per land, this servo valve serves as the critical control element in high-performance motion control architectures where accuracy and repeatability are non-negotiable.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Directional Servo Valve (Two-Stage, Nozzle-Flapper Pilot) |
| Model Designation | 4WS2EM10-52/75B11XHT315K31EV |
| Material Number | R901039619 |
| Nominal Size | NG10 (Size 10) |
| Rated Flow | 75 L/min at Δp = 31.5 bar per metering land |
| Operating Pressure | Up to 315 bar (system pressure class) |
| Spool Configuration | Four-way, three-position, closed-center critical spool geometry |
| Actuation | Electrohydraulic torque motor with mechanical feedback spring |
| Mounting & Connection | ISO 4401 / DIN 24340 NG10 subplate interface; standard Rexroth electrical connector |
| Seal & Fluid Compatibility | Mineral oil based hydraulic fluids per DIN 51524; FKM seals |
Engineering Features & Advantages
- Precision Performance: The nozzle-flapper pilot stage with mechanical spool feedback delivers extremely high resolution, low hysteresis (typically <3%), and fast dynamic response, enabling accurate closed-loop control of position, velocity, and force in servo-hydraulic axes.
- 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
The Rexroth 4WS2EM10-52/75B11XHT315K31EV (material number R901039619) is a high-response, two-stage directional servo valve engineered by Bosch Rexroth for precise electrohydraulic control of position, velocity, pressure, and force in demanding closed-loop industrial systems.
PRODUCT IMAGES
Rexroth 4WS2EM10-52/75B11XHT315K31EV / R901039619 Directional Servo Valve
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Shop the genuine REXROTH 4WS2EM10-52/75B11XHT315K31EV / R901039619 Proportional Directional Control 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.