Core parameters (Δp = 35 bar)

Rated flow rate: 160 L/min

Working pressure: 350 bar continuous / 350 bar peak (valve body withstands 350 bar)

Frequency response: −3 dB ≈ 180 Hz (standard response)

Hysteresis: <1.5% (open loop)

Zero drift: <1.0%/40°C

Power supply: 24 Vdc (18–32 Vdc), standard built-in amplifier

Control signal: ±10 V or 4–20 mA

Feedback: Open loop (no LVDT)

Sealing: NBR (−29℃ to +135℃), optional FKM

Protection: IP65, standard EMC

Weight: Approximately 2.7 kg

Comparison of key models in the same series (overview)

8412: 60 L/min, 180 Hz, closed loop, <0.5% hysteresis → standard closed loop, normal operating conditions

861C: 100 L/min, 250 Hz, closed loop, <0.3% hysteresis → high response, high speed, high precision

8621C: 120 L/min, 280 Hz, closed loop, <0.25% hysteresis → top-level dynamics, large flow closed loop

9321: 160 L/min, 180 Hz, open loop, <1.5% hysteresis → super large flow, high pressure, open loop heavy load Structural features

Super high-flow ServoJet先导： 160 L/min, low noise， low pulsation， strong anti-contamination, long lifespan

24V standard amplifier + open-loop control: lower cost, simple debugging, good stability

350 bar high-pressure valve body： suitable for high-pressure heavy-duty working conditions in metallurgy, forging, die-casting, etc.

Standard anti-vibration / EMC design: stable operation in industrial environment for long-term use

Typical applications

Metallurgical rolling mill： high-flow pressure control， open-loop speed control， roll drive

Forging / die-casting: high-speed high-flow mold locking, injection, slider drive, open-loop position control

Heavy-duty hydraulic system： high-flow high-pressure drive， open-loop speed / pressure control

Industrial automation： super high-flow + high-pressure open-loop system， cost-sensitive heavy-duty scenarios