Servo Valve For External Electronics (Rexroth - BOSCH). - 45 L/min , Valve Pressure Differential = 70 bar. - ET - Internal Supply , Internal Drain. - Two Stage , Type 4WS2E. - Nominal Size 10. - Connection Location to ISO 4401. - Code : 4401-05-0-094.

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Servo Valve For External Electronics (Rexroth - BOSCH). - 45 L/min , Valve Pressure Differential = 70 bar. - ET - Internal Supply , Internal Drain. - Two Stage , Type 4WS2E. - Nominal Size 10. - Connection Location to ISO 4401. - Code : 4401-05-0-094.
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4WS2EM_10-5X-45B11E_
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Modified on: August 22,2026  
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Specifications
Supplier part number: 4WS2EM_10-5X-45B11E_
Name:Servo Valve For External Electronics (Rexroth - BOSCH). - 45 L/min , Valve Pressure Differential = 70 bar. - ET - Internal Supply , Internal Drain. - Two Stage , Type 4WS2E. - Nominal Size 10. - Connection Location to ISO 4401. - Code : 4401-05-0-094.
Description:Based on the official Bosch Rexroth technical documentation, the 4WS2E servo valve you've specified is a two-stage directional valve designed for closed-loop control of position, force, pressure, or velocity, and it operates with external control electronics. For the requested 45 L/min nominal flow at a 70 bar valve pressure differential (35 bar per control edge) and ET (internal supply, internal drain) pilot oil configuration, this is a standard variant for the NG10 size . The technical specifications and ordering code breakdown are detailed below. ✅ Confirmed Valve Specifications Parameter Specification Source(s) Model Series 4WS2E - Electrically operated 2-stage servo valve for external electronics Nominal Size 10 (NG10) Nominal Flow (at 70 bar Δp) 45 L/min (±10% tolerance) Max. Operating Pressure 315 bar Pilot Oil Supply/Drain ET – Internal supply, internal drain (standard configuration) Feedback Mechanical First Stage Type Nozzle/flapper plate amplifier Porting Pattern ISO 4401 Component Series 5X (Series 50 to 59) 🔧 Ordering Code Breakdown Your specifications translate into the following Rexroth ordering code structure : 4WS2E: Electrically operated 2-stage servo valve for external control electronics 10: Nominal size 10 (NG10) 5X: Component series 50 to 59 (installation dimensions unchanged) 45: Nominal flow: 45 L/min at 70 bar valve pressure differential B: Valve version code (e.g., spool overlap) 11: Coil number for external electronics (30 mA / 85 Ω per coil) ET: Pilot oil supply: internal supply, internal drain (the standard configuration) 315: Inlet pressure range to 1st stage: 10 to 315 bar K31: Electrical connection code (without plug-in connector, with component plug) Note: The nominal flow of 45 L/min applies at the specified 70 bar valve pressure differential, with a typical tolerance of ±10% . The code "4401-05-0-094" you referenced aligns with the standard ISO 4401 porting pattern for NG
    
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