Nachi SWM-G02 Series Wet Type Solenoid Valve | SWM-G02-C4-D24

The SWM-G02 Series wet-type solenoid directional valves manufactured by Chengyuan Hydraulic are high-performance industrial components engineered to match the precision standards of Nachi (Fujikoshi). This series is meticulously adapted for high-demand configurations including SWM-G02-C4-D24-30-D-E015, SWM-G02-C4-D12-30-S003, and S005.

As a benchmark for G02 (NG6) size valves, the SWM series utilizes high-output wet solenoids where the armature moves within the hydraulic oil, providing natural lubrication and a cushioning effect. Chengyuan ensures 100% original-place interchangeability regarding mounting patterns (ISO 4401-03) and electrical plug layouts. Every valve undergoes 100% simulated load testing up to 350 bar to verify switching responsiveness and contamination resistance, ensuring robust performance in CNC machine tools and automated factory systems.

Technical Specifications :

• Compatible Brand: Nachi SWM Series

• Nominal Size: G02 (NG6 / CETOP 3)

• Spool Function: C4 (3-position 4-way, closed center P, T, A, B)

• Solenoid Operating Voltage:

  • D24: 24V DC

  • D12: 12V DC

• Max Operating Pressure (P, A, B Ports): 350 bar (5075 PSI)

• Max Permissible Tank Back-Pressure: 210 bar (3045 PSI)

• Rated Flow Capacity: Up to 80 L/min (Depending on spool & $\Delta P$)

• Design Sequence: 30 Series

• Special Codes: E015 / S003 / S005 (Referring to orifice sizes or manual override options)

• Ingress Protection: IP65 rated

Key Technical Advantages:

• Wet-Armature Dampening Design: The armature is submerged in oil, utilizing hydraulic damping to absorb mechanical shocks during switching. This not only significantly extends coil life but also ensures quiet and smooth operation.

• High-Pressure Balanced Spool Metallurgy: Spools are forged from premium alloy steel with vacuum hardening for extreme durability. The integrated pressure-balance grooves prevent hydraulic locking even at maximum pressures, ensuring consistent mobility.

• Ultra-Low Internal Leakage: Precision grinding technology achieves micron-level clearances between the spool and bore. This ensures that even under a sustained 350 bar load, internal leakage remains minimal, enhancing overall system efficiency.

• Advanced Electrical Interface: Optimized for the SWM series’ specific wiring needs, the junction box/plug setup provides superior protection against oil mist and moisture. Specific versions like E015 support low-power consumption requirements.

Application Areas:

• CNC Machine Tools: Tool indexing, spindle clamping, and fixture control.

• Injection Molding Machinery: Sequence logic for ejectors and safety door interlocks.

• Mobile Machinery: Pilot control circuits for compact excavators and municipal service vehicles.

Expert Maintenance Tips:

• Voltage Verification: Always confirm the supply voltage (D24 or D12) matches the coil rating. For plugs with LED indicators, ensure correct polarity for visual feedback.

• Strict Filtration Standards: To prevent the C4 closed-center spool from jamming, the system must maintain a filtration level of ISO 4406 20/18/15 or better.

• Avoid Dry Energization: Never energize the solenoid coil unless it is fully installed on the armature tube. Operating a coil “in the air” will cause it to overheat and burn out instantly due to the lack of magnetic saturation.