Product Overview
The MOOG J761-003 / S63JOGAA4VPL is a high-performance, two-stage electrohydraulic servo valve manufactured by MOOG, the global benchmark in precision motion control. Engineered around a torque-motor pilot stage and a spool-type second stage, this valve converts low-power electrical command signals into proportional hydraulic flow and pressure output with exceptional resolution and dynamic response. The J761 series is a mechanically feedback, flow-control servo valve widely deployed in closed-loop industrial and aerospace-grade motion systems where precise position, velocity, and force regulation are mission-critical. The S63JOGAA4VPL designation defines the specific spool configuration, rated flow class, and porting interface of this unit, ensuring direct interchangeability with original MOOG assemblies.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Electrohydraulic Servo Valve (Two-Stage, Spool Type) |
| Model Designation | MOOG J761-003 / S63JOGAA4VPL |
| Pilot Stage | Torque motor with mechanical feedback (dry torque motor, dual nozzle-flapper) |
| Second Stage | Four-way, closed-center sliding spool with flow metering lands |
| Operating Pressure | Standard Industrial Grade (Up to 210 bar / 3,000 psi rated supply) |
| Rated Flow | Nominal 5–40 L/min class (per 70 bar valve drop, model-dependent) |
| Rated Input Current | ±40 mA (typical differential torque motor command) |
| Hysteresis & Resolution | < 3% hysteresis, infinitely variable resolution below 0.5% |
| Frequency Response | High dynamic bandwidth (typically 60–100 Hz at 90° phase lag) |
| Mounting & Connection | Standard MOOG subplate / manifold interface with ISO 4401 port pattern |
| Hydraulic Fluid | Mineral-based hydraulic oil, ISO VG 32–68, cleanliness ISO 4406 16/13 or better |
Engineering Features & Advantages
- Precision Performance: The electrohydraulic servo valve (two-stage, spool type) 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 MOOG standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
The J761 series is a mechanically feedback, flow-control servo valve widely deployed in closed-loop industrial and aerospace-grade motion systems where precise position, velocity, and force regulation are mission-critical.
PRODUCT IMAGES
MOOG J761-003 / S63JOGAA4VPL Servo 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 MOOG J761-003 / S63JOGAA4VPL Servo Valve. This US-made hydraulic component features a precise flapper-nozzle design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.