HD – 4WRA(E)2X – Proportional Directional valve
Master the movement of your compact and mid-sized industrial actuators with the ultimate blend of dynamic response and simplified installation: the HD 4WRA(E) Series. Available through Thm Hydraulics, this direct-actuated proportional directional valve allows you to infinitely govern both the direction and the magnitude of fluid flow. Engineered for modern automation, the 4WRAE model features On-Board Electronics (OBE) for a sleek, "plug-and-play" integration into your control network. Capable of managing operating pressures up to 315 bar and flow rates up to 75 L/min (Size 10), this valve provides the smooth acceleration, deceleration, and high-precision velocity control essential for high-performance machinery.
Core Technical Specifications:-
- Component Architecture: Direct Actuated Proportional Directional Valve
- Model Type: HD-4WRA (External Control) / HD-4WRAE (Integrated OBE)
- Nominal Size: Size 10
- Maximum Operating Pressure: Up to 315 bar
- Maximum Flow Capacity: Up to 75 L/min
- Feedback Mechanism: Position transducer for improved accuracy
- Mounting Style: Sub-plate mounting
Key Features & Engineering Advantages:-
- "Plug-and-Play" Precision: The OBE integration on the 4WRAE model simplifies your machine commissioning. By factory-calibrating the signal to the specific valve's performance, you eliminate the tedious manual tuning often required with external amplifier cards.
- Direct-Acting Response: The internal spool is actuated directly by the proportional solenoids, providing instantaneous, highly dynamic response times. This makes it ideal for fast-paced industrial control loops and sensitive automation tasks.
- User-Friendly Solenoids: The proportional solenoids are equipped with a central thread and removable coils. This allows for rapid electrical maintenance or coil replacement without breaking into the hydraulic circuit, minimizing downtime.
- Spring-Centered Failsafe: Equipped with a robust spring-centering mechanism that returns the spool to a safe neutral position immediately upon power failure, preventing uncontrolled actuator drift.
- Unified Control Solutions: For maximum performance, both the high-accuracy valve and the integrated proportional electronics are sourced from a single supplier, ensuring perfect signal-to-spool calibration.
Ideal Industry Applications:-
The high-dynamic response and 315 bar endurance make the HD 4WRA(E) Valve the premier choice for:
- Compact Industrial Presses: Governing the rapid approach and precise pressing velocities for lightweight metal forming and component assembly equipment.
- Automated Packaging Machinery: Providing smooth "soft-starts" and "soft-stops" to handle delicate items on high-speed conveyor systems.
- Material Handling & Robotics: Enabling precise, jerk-free movement for industrial lifts, tilting platforms, and robotic transfer arms.
- Machine Tool Auxiliaries: Controlling the variable feed rates for auxiliary tooling, clamping circuits, and parts loaders on CNC machinery.
Why Choose the HD 4WRA(E) Series?
- Master the Nuance: Stop treating your machinery like a blunt instrument. Proportional control gives you the "soft touch" needed to move heavy loads with millimeter precision, eliminating the mechanical "jerk" of standard valves.
- Ready for Advanced Automation: These valves bridge the gap between heavy fluid power and digital PLC control, allowing your software to dictate every subtle nuance of the hydraulic cycle.
- Rugged & Reliable Simplicity: The feedback-integrated design offers superior control fidelity without the vulnerability of external sensors in harsh environments.
