4WE 6 E61/EG24N9K4
3 week ago
Product details
1. Model Breakdown (4WE 6 E61/EG24N9K4)
4WE
• 4: Indicates4 independent ports(typically P, A, B, T: inlet, working port 1, working port 2, return), suitable for bidirectional hydraulic systems (e.g., hydraulic cylinder forward/reverse control).
• WE: Bosch Rexroth’selectromagnetic directional control valveseries code, representing a wet-type solenoid valve.
6
• Nominal diameter: Denotes a6mm port size, corresponding to a flow range of approximately10–60 L/min(dependent on pressure and viscosity).
E61
• Functional code:
• E: Signifiessolenoid control(Electromagnetic).
• 61: Internal structure code, typically referring to aspring-centered 4/2 valve(spring returns to neutral position when de-energized; solenoid actuates oil path when energized).
EG24N9K4
• EG24: Solenoid voltageDC24V, with protection rating (e.g., IP65).
• N9: Indicatesneutral position functionasO-type(P, A, B, T ports all blocked, suitable for cylinder locking or system pressure holding).
• K4: Connection method or additional feature code (e.g., manual override, position feedback; refer to manual for specifics).
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2. Key Performance Parameters
【表格】
Parameter Typical Value Description
Nominal Pressure 31.5 MPa (315 bar) Maximum allowable working pressure; system pressure must not exceed this value.
Flow Range 10–60 L/min Actual flow must not exceed rated flow to avoid cavitation or overheating.
Solenoid Voltage DC24V Must match control system voltage; supports PWM for proportional valves.
Response Time ≤15 ms Time from solenoid energization to full valve spool movement.
Operating Temp. -20°C to +80°C Temperature range for seals and hydraulic fluid.
Leakage ≤50 cm³/min (internal) Leakage between spool and body, affecting system efficiency.
Protection Rating IP65 (solenoid) Dust/water resistance for industrial environments.
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3. Structural & Functional Features
Wet-Type Solenoid
• Advantages: Solenoid submerged in hydraulic oil for better cooling and longer lifespan (>100 million cycles), suitable for high-frequency switching.
• Disadvantages: More complex structure, higher cost than dry-type solenoids.
4/2 Valve Spool (Two-Position, Four-Port)
• Neutral Position (N9/O-Type):
• When de-energized, P, A, B, T ports are blocked, locking the hydraulic cylinder.
• When energized, P→A and B→T (or P→B and A→T, depending on spool design) for cylinder extension/retraction.
Spring-Centered Design
• After de-energization, spring returns spool to neutral, ensuring system safety (e.g., cylinder stop during power failure).
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4. Typical Applications
• Industrial Hydraulics:
• Hydraulic cylinder control in presses and die-casting machines.
• Mold opening/closing in injection molding machines.
• Construction Machinery:
• Hydraulic actuator control in excavators and loaders.
• Automation Equipment:
• Motion control for robotic grippers and linear actuators.
• High-Pressure Systems:
• Metal forming equipment and hydraulic test benches (requiring ≥31.5MPa).
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5. Selection & Validation Guidelines
1. Pressure Matching:
• Ensure system max pressure ≤31.5MPa, with 10–20% safety margin.
2. Flow Matching:
• System flow must stay within 10–60L/min to prevent spool sticking or cavitation.
3. Electrical Compatibility:
• Solenoid voltage (DC24V) must match PLC/controller output.
4. Neutral Position Selection:
• O-type (N9) for locking; consider H-type or Y-type for unloading.
5. Mounting Dimensions:
• Verify port size (e.g., NG6/DIN24340) matches piping.
6. Fluid Compatibility:
• Suitable for mineral-based oils; confirm seal material compatibility for water-based or synthetic fluids.
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6. Common Issues & Solutions
• Issue 1: Valve Inoperative
• Check power supply (DC24V connectivity) and solenoid coil resistance (typically 20–50Ω).
• Ensure system pressure ≥ minimum actuation pressure (usually 0.5–1MPa).
• Issue 2: Excessive Leakage
• Replace spool seals or inspect for body wear.
• Confirm hydraulic fluid cleanliness (NAS 6 or cleaner).
• Issue 3: Slow Response
• Clean spool to remove contaminants.
• Check for spring fatigue or weak solenoid pull.
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7. Alternative Model Recommendations
• Bosch Rexroth:
• 4WE 6 D61/EG24N9K4 (dry-type solenoid, lower cost).
• 4WE 6 Y61/EG24N9K4 (Y-type neutral for unloading).
• Other Brands:
• Parker: D1FW series (wet-type solenoid, high compatibility).
• Yuken: DG-06 series (compact, cost-effective).
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