Model Code Explanation (D661-4380EG60HOCA5VSX2HA)

D661: Series (ISO 4401‑05, 24 VDC integrated electronics, bushing‑type spool)

4: High‑flow platform

38: 380 L/min nominal flow (Δp=35 bar)

0: Standard dynamic response (15 ms step response)

E: Economy electronics, basic null stability

G: Standard spool (zero‑lap, linear), ServoJet® pilot

60: Pilot pressure range & internal tuning code

HO: High‑response trim, no mechanical feedback (note: “HO” = H0 in standard notation)

CA: ±10 V command, 4–20 mA LVDT feedbackMoog Inc.

5: Medium‑resolution LVDT

VSX: Viton® seals, high‑temperature fluid compatibility

2HA: Dual‑T port, ISO 4401‑05‑05‑0‑94 mounting

Technical Specifications

Part Number: D661-4380EG60HOCA5VSX2HA

Mounting: ISO 4401‑05 (NG10), 4‑hole M5, dual T‑port (T1/T2)

Control Function: 4‑way/3‑position, spring‑centered, zero‑lap, closed‑loop

Hydraulic

Nominal Flow (Δp=35 bar): 380 L/min (±8%)

Max Operating Pressure (P/A/B): 350 bar (5,000 psi)Moog Inc.

Pilot Pressure (X): 21–280 bar (internal P or external X)

T Port Pressure (Y internal): 210 bar; (Y external): 350 barMoog Inc.

Fluid: Mineral oil (DIN 51524), Viton® seals (−20°C to +120°C)

Temperature: Ambient −20°C to +60°C; Fluid −20°C to +80°C

Weight: Approx. 5.8–6.0 kg

Electrical

Supply: 24 VDC (18–32 VDC), quiescent 230 mA, dynamic ~500 mAMoog Inc.

Command Signal: ±10 V differential (10 kΩ impedance)Moog Inc.

Feedback Signal: 4–20 mA (single LVDT, ±0.02% FS accuracy)

Connector: 6+PE (EN 175201‑804), IP65 (connected)Moog Inc.

Step Response (0→100%): ≤15 ms @ 210 barMoog Inc.

Hysteresis: <0.30% (closed‑loop)

Linearity: <±0.35%

Resolution: <0.12%

Interface & Communication

Electrical: 6+PE connector; ±10 V command, 24 VDC power, 4–20 mA LVDT feedbackMoog Inc.

Feedback: Single integrated LVDT (full‑stroke closed‑loop)

Ports: P, A, B, dual T (T1/T2); optional external X (pilot) and Y (return)

Key Features

380 L/min Ultra‑High Flow: Highest flow in D661‑4xxx series

Dual T‑Port: Enhanced flow capacity for large‑scale systems

Viton® Seals: Extended fluid compatibility and high‑temperature resistance

15 ms Standard Response: Cost‑effective dynamics for non‑critical speed applicationsMoog Inc.

Economy Null Stability: Lower cost for general‑purpose industrial use

±10 V / 4–20 mA: Standard analog interface for wide controller compatibilityMoog Inc.

Applications

Ultra‑high‑flow industrial test benches (non‑aerospace)

Large forging presses and heavy steel rolling mills

Extra‑large injection molding and die‑casting machines

Mining excavators and high‑tonnage hydraulic machinery

Hydraulic systems requiring dual‑T port flow capacity

Compatibility

Interchangeable with D661‑4375B/4352C/4341C (ISO 4401‑05)

Drop‑in upgrade for lower‑flow D661‑4209/4196

Requires 24 VDC supply, ±10 V controller, ISO 4401‑05 manifold with dual T‑port