Product Overview
The Rexroth 4WRKE16W8-125L-3X/6EG24EK31/A1D3M (Material Number R900977312) is a high-response, pilot-operated proportional directional valve from the Rexroth 4WRKE series, size NG16 (nominal flow 125 L/min at Δp = 10 bar per land). It is a two-stage design in which a proportional pilot valve controls the main spool of the second stage, providing continuously variable directional control and stepless flow metering proportional to the electrical command signal. The valve features integrated position feedback of the main spool (designated by the “L” in the model code), enabling precise, repeatable spool positioning with fast response and minimal hysteresis. With a 3X series designation, the valve conforms to the current Rexroth 3X component series standard. The “W8” spool symbol denotes a specific metering characteristic (progressive flow gain with closed-center overlap), while the “6EG24” pilot valve designation indicates a 24 V DC proportional solenoid with integrated control electronics. This valve is engineered for demanding closed-loop and open-loop industrial motion control systems where accurate velocity, position, and force regulation of hydraulic actuators is required.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Directional Valve (Pilot-Operated, Two-Stage) |
| Model Designation | 4WRKE16W8-125L-3X/6EG24EK31/A1D3M |
| Material Number | R900977312 |
| Size / Nominal Flow | NG16 / 125 L/min per metering land at Δp = 10 bar |
| Spool Type / Symbol | W8 — Proportional spool with progressive flow characteristic, closed-center overlap |
| Series | 3X (current Rexroth component series) |
| Pilot Valve / Solenoid | 6EG24 — Proportional solenoid, 24 V DC, with integrated control electronics (EK31) |
| Operating Pressure | Up to 350 bar (main stage, P/A/B ports); pilot pressure per Rexroth specification |
| Spool Position Feedback | Integrated inductive position transducer (“L” designation) for closed-loop spool control |
| Mounting & Connection | Subplate mounting per ISO 4401 / DIN 24340 (NG16 pattern); standard Rexroth interface |
Engineering Features & Advantages
- Precision Performance: The proportional directional valve (pilot-operated, two-stage) 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 standards, allowing straightforward retrofit into existing hydraulic systems without rework.
- Rated Capability: Rated for pressure ratings up to 350 bar and flow rates up to 125 L/min, supporting stable operation across the full working range.
Typical Industrial Applications
This valve is engineered for demanding closed-loop and open-loop industrial motion control systems where accurate velocity, position, and force regulation of hydraulic actuators is required.
PRODUCT IMAGES
Rexroth 4WRKE16W8-125L-3X/6EG24EK31/A1D3M / R900977312 Proportional Directional Valve
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Shop the genuine REXROTH 4WRKE16W8-125L-3X/6EG24EK31/A1D3M / R900977312 Proportional Directional Valve. This Germany-made 24 VDC hydraulic component features a 4-way pilot-operated design with position feedback, delivering leak-free, reliable fluid control for heavy-duty industrial systems.