Model Code Definition

D663 = D660 series base model, ServoJet jet-pipe pilot, embedded electronic board + full-range LVDT spool position feedback, NG10 ISO05 installation dimensionMoog Inc.

4007 = Fixed factory trim code, fixed rated flow, gain & null offset pre-calibrated at factory for heavy-load hydraulic system

C03 = Electronic board version code, customized internal amplifier gain matching fluctuating heavy load;

HAB = Max working pressure grade H=280bar rated supply, A/B spool zero-lap linear flow, B=spring centered neutral fail-safe;

P6 = 7-pin circular military electrical receptacle, straight cable outlet, IP65 assembly protection;

VSX2HA = V=FKM Viton high temp oil seal, S=4-way zero overlap spool, X=custom drain layout, 2=standard LVDT feedback, HA=separated independent external Y drain full pressure resistant

Technical Specifications

Hydraulic Parameters

Rated Flow:112 L/min @35bar single differential pressure; peak instantaneous flow 169 L/min @70bar supply pressure

Max Working Pressure:P/A/B ports 350bar; Internal T drain ≤50bar; External Y drain full 350bar permissibleMoog Inc.

Full Stroke Step Response:≤21.2ms @210bar supply oil pressure

Control Precision:Hysteresis＜0.16%FS, Resolution＜0.062%FS, thermal drift(-20~+80℃)＜2.08%FS

Null Leakage:0.23~1.85 L/min, critical zero-lap linear spool design

Working Medium:Anti-wear mineral hydraulic oil, cleanliness NAS6~7 / ISO4406 17/14/11, working fluid temp -20℃~+95℃ (Viton seal upgrade vs standard 80℃ limit)

Net Weight:3.18kg

Electrical Parameters

Input Power:24VDC wide range (18~32VDC), static standby current ≤680mA

Control Signal:Factory default ±10VDC differential voltage; 4~20mA current signal available by factory recalibration

EMC:Complies with EN55011 industrial EMC standard, double shielded control wiring requirement

Port & Connection Configuration

Hydraulic Port:ISO4401-05 NG10 standard hole layout: P supply, A/B actuator ports, separate internal T drain + independent external Y drain, full Viton fluorocarbon sealing for all port joints

Electrical Interface:7-pin circular plug (P6 code), integrates 24V power, ±10VDC command signal and LVDT spool feedback signal, straight-out cable structure without elbow adapter, no fieldbus digital interface

Core Functions

1.Patented ServoJet jet-pipe pilot has superior contamination resistance vs nozzle-flapper design, stable continuous long-running operation under moderate oil impurity environment for heavy-duty forging equipment.

2.Zero-lap linear spool ensures smooth switching among position/speed/pressure triple closed-loop control; onboard LVDT closed-loop dynamically compensates spool thermal drift from wide ambient temperature variation.

3.Spring-centered fail-safe neutral design: spool returns to center automatically upon power loss to lock A/B oil circuit and fix hydraulic cylinder for machine overload safety protection.

4.Viton high-temperature seal adapts high oil temperature working condition of hot forging hydraulic station, effectively avoiding high-temp seal aging and medium leakage.

Typical Application

Heavy hydraulic forging press master cylinder closed-loop control, metal material high-frequency fatigue test bench, large tonnage die-casting clamping & injection servo system, composite material hot compression molding high-precision hydraulic equipment.

Installation & Maintenance Instructions

1.Install 3μm high-pressure inline precision filter on upstream supply pipeline; replace initial filter element after 15 working days of commissioning startup.

2.Separate power cable and shielded control wire into different wiring troughs to avoid inverter harmonic interference to analog control signal; mount valve with standard flat washer.

4.All flow gain and null bias parameters pre-calibrated in MOOG factory; only tiny potentiometer fine adjustment allowed on site; complete disassembly of ServoJet pilot and main spool assembly is strictly forbidden.

5.Unused hydraulic ports sealed with original factory blank plugs during spare storage, store in dry dustproof warehouse to protect Viton seal from long-term ageing.