Rexroth Proportional Directional Valve with ISO 4401 Mounting 280 Bar Nominal Pressure and 24V Voltage

4WRA6E2-20-1X/24N9Z4/M
4WRA6E1-10-1X/24NZ4/M
4WRA6E15-2X/G24N9Z4/V
4WRA6EA20-1X/24K4/VR
4WRA6EB05-1X/24Z4/M Rexroth Germany imported proportional hydraulic system directional valve

FAQ;

What are the main features of the 4WRA6 series?

• Direct-Operated Design: The valve spool is moved directly by proportional solenoids without the need for a pilot pressure stage .

• Spring-Centered Spool: When the solenoids are de-energized, the spool returns to and is maintained in the center position by compression springs .

• Mounting: Subplate mounting with porting interface according to ISO 4401 .

• Two Configurations: Available with external control electronics (4WRA type) or with integrated onboard electronics (OBE) (4WRAE type) .

• Flow Control: Provides proportional flow control with a progressive flow characteristic (metering notch) in addition to direction control .

3. What is the difference between 4WRA and 4WRAE?

The key difference lies in the location of the control electronics.

• 4WRA: Requires an external, separate amplifier to function. The amplifier processes the input signal (e.g., from a PLC) and provides the necessary power to the valve's solenoids .

• 4WRAE: Features Integrated OnBoard Electronics (OBE). The control electronics are built into the valve, allowing it to accept standard analog input signals (e.g., ±10 V or 4-20 mA) directly .

4. How do I read the model number? A typical 4WRA6 model code is structured as follows :

• 4WRA: Series designation for proportional directional valve without OBE. "E" after WRA (4WRAE) indicates integrated electronics.

• 6: Nominal size (06). Alternative size is 10.

• W / E / etc.: Spool symbol/type (e.g., W, E, EA), which defines the flow characteristics and center position condition .

• 07 / 15 / 30: Nominal flow rate in liters per minute at a pressure drop (Δp) of 10 bar. For size 06, common values are 7, 15, or 26/30 L/min .

• 2X: Component series (20-29).

• G24: Supply voltage (24 V DC).

• K4 / K31: Electrical connection type (e.g., without plug, with specific component socket) .

• V: Seal material (e.g., FKM for mineral oil) .

• A1 / F1 (for 4WRAE): Control value input type (A1 for ±10V, F1 for 4-20mA) .

5. What are the key technical specifications?

• Maximum Operating Pressure: Up to 350 bar for P, A, B ports .

• Maximum Flow: Varies with model (e.g., 42 L/min for some 4WRAE6 models) .

• Recommended Fluid Cleanliness: ISO 4406 20/18/15 .

• Voltage: Typically 24 V DC .

ISO 4401 Mounting Proportional Directional Valve

280 Bar Nominal Pressure Rexroth Valve

24V Voltage Hydraulic Control Valve

Rexroth Proportional Directional Valve with ISO 4401 Mounting 280 Bar Nominal Pressure and 24V Voltage Images