Model Code Definition

D663 = Base series: NG10 ISO4401-05 installation dimension, ServoJet jet-pipe pilot structure, embedded integrated servo amplifier + LVDT spool feedback

1910 = Unique factory trim code to confirm fixed rated flow, preset null offset, locked amplifier gain and customized pilot component specification

E = Enhanced PCB circuit version with improved thermal stability, standard FKM fluororubber sealing for regular industrial ambient

Technical Specifications

Hydraulic Parameters

Rated Flow:118 L/min @35bar single-land differential pressure; peak instantaneous flow 196 L/min @70bar supply differential pressure

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

Full Stroke Step Response:≤22.5ms under standard 210bar supply pressure

Control Precision:Hysteresis＜0.17%FS, Resolution＜0.070%FS, overall thermal drift(-20~+60℃)＜2.05%FS

Null Leakage:0.42~2.75 L/min

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

Net Weight:2.92kg

Electrical Parameters

Input Power:24VDC wide input(18~32VDC), static standby current ≤620mA

Standard Control Command:±10VDC differential analog input; ±10mA /4~20mA current signal available via factory custom order

EMC Standard:Comply with EN55011 industrial EMC requirement; 7-pin military circular connector, IP65 protection after cable assembly

Port & Connection Configuration

Hydraulic Interface:Standard ISO4401-05 NG10 mounting hole layout, separate P supply port, A/B actuator control ports, built-in T internal drain and independent Y external drain port

Electrical Interface:7-pin circular receptacle integrating power supply, analog command and full-travel LVDT feedback wiring; double-shielded control cable with single-point cabinet grounding

Control Mode:Pure analog closed-loop regulation, no fieldbus digital communication interface

Core Functions

1.Patented ServoJet jet-pipe pilot features superior anti-contamination ability compared with traditional nozzle-flapper pilot, ensuring long-term stable running under moderately contaminated hydraulic oil condition.

2.Enhanced E-type built-in amplifier matches full-range LVDT closed-loop feedback to automatically compensate temperature-induced null shift, better ambient adaptability than ordinary standard circuit.

3.Spring-centered fail-safe spool design:main spool returns to neutral automatically upon power loss to shut A/B oil circuit and lock actuator for equipment safety protection.

4.Optimized internal flow channel maintains linear flow gain, supports flexible switching among position, velocity and pressure three closed-loop control modes.

Typical Application

Medium tonnage hydraulic forging press, auto component stamping equipment, small-medium steel strip mill tension control, hydraulic material fatigue test bench, medium-sized composite hot forming machine, precision injection molding clamping hydraulic system.

Installation & Maintenance Instructions

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

2.Arrange power and shielded control wires inside independent wiring duct to avoid frequency converter harmonic interference on analog control signal.

3.Null bias and flow gain are pre-calibrated at MOOG original factory; only minor on-site potentiometer fine adjustment allowed; full disassembly of ServoJet pilot and main spool assembly is strictly prohibited.

4.Plug all unused hydraulic ports with dedicated blank plugs during spare storage; store in dry dustproof warehouse to prevent FKM seal ageing and fluid leakage.