D634-538A
D634-538A is a pilotless single-stage direct-drive servo valve of MOOG D634 series. It adopts permanent magnet linear force motor drive and built-in LVDT closed-loop feedback, matched with 24VDC PWM drive system, designed for high-pressure, high-response and medium-flow hydraulic closed-loop control.
Description
Basic Information
Brand: MOOGModel: D634-538AStructure: Pilotless single-stage direct drive valveInstallation standard: ISO4401-05 (NG10)Drive mode: Permanent magnet linear force motorFeedback type: Integrated LVDT spool position feedbackPower supply: 24VDC, 18-32VDC, maximum current 2.2AProtection class: IP65Weight: Approximately 6.8kg
Function & Positioning
Core Functions
Accurately regulate flow rate and direction, realize closed-loop control of position, speed, pressure and force.Pilotless design simplifies hydraulic circuit and reduces failure risks.Spring centering structure automatically returns spool to neutral position for power-off safety protection.Dynamic performance remains stable against system pressure fluctuation.
Product Positioning
Core control component for medium-flow and high-pressure hydraulic systems.Ideal replacement of conventional pilot servo valve with high stability and low maintenance cost.
Core Performance Parameters
Maximum working pressure: 350barMaximum T-port pressure: ≤50barRated flow under 35bar pressure drop: 100L/minPeak flow: 185L/minNull leakage: 0.8-4.0L/minFull stroke step response: ≤20ms-3dB frequency bandwidth: 40-60HzHysteresis: ＜0.25% full scaleResolution: ＜0.10% full scaleWorking fluid: ISO11158 mineral hydraulic oilFluid temperature range: -20℃~80℃
Universal Matching Accessories
ISO4401-05 standard mounting manifoldM18 6-core electrical connectorHigh-precision hydraulic filterSpecial sealing kitsPressure detection sensor
Applicable Equipment Fields
Hydraulic press and forging machineryInjection molding and die casting equipmentVibration and fatigue test benchesHeavy-duty industrial hydraulic control systemPrecision automatic closed-loop control facilities
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