Model Code Definition

D662 = Base series: NG16 ISO4401-07 mounting dimension, ServoJet jet-pipe pilot structure, built-in integrated electronic amplifier

Z4336 = Exclusive factory trim code defining fixed rated flow value, preset null offset, customized pilot component configuration and factory-locked amplifier gain parameters

K = Cold-resistant upgraded revision with anti-drift circuit to minimize thermal null shift amid drastic ambient temperature fluctuation

Technical Specifications

Hydraulic Parameters

Rated Flow: 315 L/min @35bar single-land differential pressure; maximum instantaneous flow 510 L/min at 70bar supply differential pressure

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

Full Stroke Step Response: ≤25.8ms under 210bar supply pressure

Control Precision: Hysteresis＜0.18%FS, Resolution＜0.07%FS, total thermal drift (-20℃~+55℃)＜2.1%FS

Null Leakage: 0.52~3.2 L/min

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

Net Weight: 3.82kg

Electrical Parameters

Power Supply: 24VDC wide input range (18~32VDC), static quiescent current ≤700mA

Standard Command Signal: ±10VDC differential analog input; ±10mA /4~20mA current input configurable via special factory order

EMC Compliance: Conforms to EN55011 industrial EMC standard; 7-pin military circular connector, IP65 protection after cable assembly

Port & Connection Configuration

Hydraulic Interface: Standard ISO4401-07 NG16 mounting hole layout, P supply port, A/B actuator control ports, internal T drain port, separate Y external drain port

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

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

Core Functions

Patented ServoJet jet-pipe pilot features superior contamination resistance compared to traditional nozzle-flapper pilot, ensuring continuous steady operation with moderately contaminated hydraulic fluid in harsh workshop environment穆格中国.

Onboard amplifier matches full-travel LVDT closed-loop to automatically compensate temperature-caused null drift; K-type optimized circuit greatly enhances stability during large ambient temperature swings.

Spring-centered fail-safe spool construction: spool mechanically returns to neutral upon power loss to seal A/B oil cavities and fix load position for machinery safety protection.

Optimized internal flow duct maintains stable linear flow gain, supporting flexible switching among position, velocity and pressure closed-loop control modes.

Typical Application

Heavy hot forging hydraulic press, automotive large-panel stamping production line, steel strip mill tension control system, high-load mechanical fatigue test bench, aerospace composite hot-forming equipment, large-tonnage die-casting mold-clamping hydraulic system.

Installation & Maintenance Instructions

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

Arrange power cables and shielded control wires inside separated wiring troughs to avoid inverter harmonic interference on analog command signal.

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

Seal all unused hydraulic ports with dedicated blank plugs during spare part storage; store within dry dustproof warehouse to prevent FKM fluororubber seal ageing and hydraulic fluid leakage.