Model Code Definition

D663 = Core series: ISO4401-05 NG10 installation footprint, patented ServoJet jet-pipe pilot stage, onboard amplifier circuit + full-range LVDT spool position closed-loop feedback structureMoog Inc.

4007 = Factory fixed trim code with predefined rated flow, locked amplifier gain and matched pilot assembly calibration; no suffix matches standard ±10VDC signal, critical zero-lap spool and regular NBR sealing layout; complete full model code: D663-4007 L03HABD6VSX2-A

Technical Specifications

Hydraulic Parameters

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

Max Working Pressure:P/A/B main control ports up to 350bar; built-in internal T drain ≤50bar; standalone external Y drain withstand full 350bar rated system pressureMoog Inc.

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

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

Null Leakage:0.23~1.85 L/min, critical zero-overlap linear flow spool structure

Working Medium:Anti-wear mineral hydraulic oil, fluid cleanliness NAS6~7 / ISO4406 17/14/11, operating fluid temperature range -20℃~+80℃

Net Weight:3.18kg

Electrical Parameters

Input Power Supply:24VDC wide-range input(18~32VDC), static standby current ≤680mAMoog Inc.

Standard Control Command:Factory preset ±10VDC differential analog voltage input; 4~20mA current signal configurable via factory recalibration

EMC Compliance:Conform to EN55011 industrial EMC standard; standard 7-pin military circular connector with IP65 protection after complete cable assemblyMoog Inc.

Port & Connection Configuration

Hydraulic Interface:Standard ISO4401-05 NG10 hole layout including independent P supply port, A/B actuator control ports, separated internal T drain plus external Y drain, cast valve body equipped with full NBR port sealing

Electrical Interface:7-pin circular receptacle integrating power supply, ±10VDC control signal and full-travel LVDT spool feedback signal; double-shielded control cable with single-point grounding inside control cabinet, no digital fieldbus communication interface

Core Functions

1.Patented ServoJet jet-pipe pilot provides outstanding contamination resistance compared with traditional nozzle-flapper pilot, ensuring stable continuous long-hour operation under moderately contaminated hydraulic oil environment.

2.Zero-lap main spool delivers excellent linear flow characteristic to support seamless switching among position, speed and pressure three closed-loop control modes; built-in LVDT closed-loop dynamically compensates spool position drift induced by ambient temperature variation.

3.Spring-centered fail-safe neutral design:main spool automatically returns to middle position once power failure occurs to block A/B oil paths and lock hydraulic cylinder for equipment overload safety protection.

4.Customized internal amplifier gain matched for heavy-load fluctuating working condition, ±10VDC analog input features excellent anti-interference performance for short-distance cabinet wiring and high-precision closed-loop regulation.

Typical Application

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

Installation & Maintenance Instructions

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

2.Arrange power cable and shielded control wire inside separated wiring ducts to avoid frequency converter harmonic interference on analog control signal; fasten valve with standard flat mounting washers during installation.

3.Flow gain and null offset parameters are fully pre-calibrated at MOOG factory; only minor on-site potentiometer fine adjustment is permitted; complete disassembly of ServoJet pilot and main spool assembly is strictly prohibited.

4.Seal all unused hydraulic ports with original blank plugs for spare part storage; preserve in dry dustproof warehouse to prevent NBR seal ageing and hydraulic fluid leakage.