Model Code Definition

D663 = Core series: ISO4401-05 NG10 mounting dimension, ServoJet jet-pipe pilot stage, onboard drive circuit + full-range LVDT spool position closed-loop feedbackMoog Inc.

4005 = Exclusive factory pre-calibrated trim number, fixed nominal flow parameter, locked amplifier gain and matched original pilot assembly; no extra suffix defines standard ±10VDC voltage input, zero-overlap spool and standard NBR general sealing layout

Technical Specifications

Hydraulic Parameters

Rated Flow:98 L/min @35bar single-side differential pressure; peak instantaneous flow 152 L/min @70bar supply differential pressure

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

Full Stroke Step Response:≤22.2ms under standard 210bar supply oil pressure (210bar system pressure)Moog Inc.

Control Precision:Hysteresis＜0.18%FS, Resolution＜0.068%FS, overall thermal drift(-20~+80℃)＜2.15%FS

Null Leakage:0.25~1.92 L/min, critical zero-overlap linear flow spool design

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

Net Weight:3.15kg

Electrical Parameters

Input Power Supply:24VDC wide-range input(18~32VDC), static standby current ≤660mA

Standard Control Command:Factory preset ±10VDC differential analog voltage input; 4~20mA current signal available via factory customized recalibrationMoog Inc.

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

Port & Connection Configuration

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

Electrical Interface:7-pin circular receptacle integrating power supply, ±10VDC control signal and full-stroke 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 delivers superior anti-contamination capability compared with traditional nozzle-flapper pilot, ensuring stable long-cycle continuous operation under moderately contaminated hydraulic medium穆格中国.

2.Zero-lap main spool provides 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 caused by ambient temperature fluctuation.

3.Spring-centered fail-safe neutral structure:main spool automatically returns to center upon power loss to block A/B oil paths and lock hydraulic actuator for equipment overload safety protection.

4.±10VDC voltage input features high control precision and stable anti-interference performance for short-distance cabinet wiring and precision closed-loop regulation.

Typical Application

Medium-large metallurgical rolling mill thickness control system, heavy-duty hydraulic forging press servo unit, composite material hot-press forming equipment, high-load dynamic material fatigue test bench, large precision automotive parts injection molding core pulling servo 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 commissioning startup.

2.Arrange power cable and shielded control wire inside separated wiring trough 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 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; store in dry dustproof warehouse to prevent NBR seal ageing and hydraulic fluid leakage.