Product Information
4WRAP6W7-02-3X/G24K4/V
4WRZ32W9-520-70/6EG24N9TK4/D3M
4WRZ32E3-360-70/6EG24N9K4/M Rexroth German made electromagnetic hydraulic proportional directional valve
Technical Specifications
| Selection Dimension |
Specific Parameters/Options |
Description |
| Model Designation |
4WRE |
Basic model: Direct-acting proportional directional valve with electrical position feedback and no integrated electronics (OBE) |
| Integrated Electronics (OBE) |
No Code |
Standard configuration without integrated electronics; external amplifier required (to be ordered separately) |
| Nominal Size |
6 |
Core size with component series 2X; mounting dimensions comply with Series 20-29 standards |
| Valve Core Type |
4/2 (2-position 4-way), 4/3 (3-position 4-way) |
4/3 type features spring-centered spool for automatic reset when de-energized; suitable for different oil circuit directional control needs |
| Rated Flow (Δp=10bar) |
4L/min (Code 04), 8L/min (Code 08), 16L/min (Code 16), 32L/min (Code 32) |
Flow rates distinguished by corresponding codes; matched to hydraulic system flow requirements |
| Seal Material |
V (FKM Fluororubber) |
Default FKM material; compatible with mineral oil and other hydraulic fluids to ensure sealing performance |
| Power Supply Voltage |
G24 (DC 24V) |
Suitable for industrial standard DC power supply; meets proportional solenoid drive requirements |
| Electrical Interface |
A1 (±10V Voltage Input), F1 (4-20mA Current Input) |
Two interface options available; compatible with PLCs, computers, and other control signal sources |
| Electrical Connection |
K4 (No Plug) |
Plug compliant with DIN EN 175301-803 standard required (to be ordered separately) |
| Special Protection |
J (Seawater-Resistant) |
Only available for Size 6; suitable for marine-related or humid/corrosive working conditions |
| Mounting Standard |
ISO 4401 |
Panel mounting with standard mounting hole pattern; compatible with universal hydraulic system manifold layouts |
| Maximum Working Pressure |
315bar |
Suitable for most medium-to-high pressure industrial hydraulic scenarios (e.g., hydraulic actuators in machine tools, automated production lines) |
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Frequently Asked Questions
1. How often should 4WREE valves be inspected?
Routine inspections are recommended every 6 months (or 1000 operating hours), including checks for leakage, wiring damage, and fluid contamination.
2. What is the recommended fluid cleanliness level for 4WREE valves?
Maintain fluid cleanliness to ISO 4406 Class 18/16/13 (or better) to prevent clogging of internal components and extend valve life.
3. How to replace the solenoid coil of a 4WREE valve?
Disconnect power, remove the coil's mounting screws, pull the coil from the valve body, and install the replacement coil (ensuring compatibility with voltage and wiring). Torque screws to 2-3 Nm.
4. When should the valve's seal rings be replaced?
Replace seal rings every 2 years (or 5000 operating hours), or immediately if leakage is detected. Use only Rexroth-approved replacement seals to avoid compatibility issues.
5. Can 4WREE valves be repaired or must they be replaced?
Minor issues (e.g., worn seals, faulty solenoids) can be repaired, but internal spool or housing damage typically requires valve replacement. Contact Rexroth service for complex repairs.
