4-Way Directional Servo Valves Type 4WS.2E (NG10)

With subplates conforming to relevant ISO standards, and operating pressures of up to 350 bar, the Bosch Rexroth 4-way valve range is highly reliable and robust for operation in a wide range of applications.


View our detailed specifications below

Servo Valve specifications

Directional Servo Valve in 4-Way Design | Type 4WS.2E (NG10)

  • Size: 10
  • Component series: 5X
  • Maximum operating pressure: 315 bar
  • Maximum flow: 180 l/min

Features:

  • Valve to control position, force, pressure or velocity
  • 2-stage servo valve with mechanical or mechanical and electric return
  • 1st stage as nozzle flapper plate amplifier
  • Subplate mounting: Porting pattern according to ISO 4401
  • Dry control motor, no pollution of the solenoid gaps by the hydraulic fluid
  • Can also be used as 3-way version
  • Wear-free control spool return element
  • Control: External control electronics in Eurocard format or in modular design (separate order), see page 8 Or control electronics integrated in the valve (OBE)
  • Valve and integrated control electronics are adjusted and tested
  • Control spool with flow force compensation
  • Control sleeve centrically fixed; thus low susceptibility to temperature and pressure
  • Pressure chambers at the control sleeve with gap seal, no wear of the seal ring
  • Filter for 1st stage externally accessible

Directional Servo Valve in 4 Way Version | Type 4WSE3E16 (NG16)

  • Size: 16
  • Component series: 2X
  • Maximum operating pressure: 350 bar
  • Maximum flow: 570 l/min

Features:

  • Valve for position, force, pressure or velocity control
  • 3-stage servo-valve with electrical position control of the control spool of the 3rd stage, position sensing of the control spool by means of an inductive position transducer
  • High dynamics 2-stage pilot control valve of size 6
  • 1st stage as nozzle flapper plate amplifier
  • Filter for 1st stage externally accessible and replaceable
  • Subplate mounting: Porting pattern according to ISO 4401
  • Can also be used as 3-way version
  • Valve and integrated control electronics are adjusted and tested in the factory
  • Optimised valve control loop
  • High response sensitivity, very low hysteresis and zero point drift
  • Internal or external pilot oil supply and return
  • Gap seals at pressure chambers of the control sleeve, no wear of O-ring

Directional Servo Valve in 4 Way Version | Type 4WSE3E25 (NG25)

  • Size: 25
  • Component series: 3X
  • Maximum operating pressure: 350 bar
  • Maximum flow: 1 020 l/min

Features:

  • Valve for position, force, pressure or velocity control
  • 3-stage servo-valve with electrical position control of the control spool of the 3rd stage, position sensing of the control spool by means of an inductive position transducer
  • High dynamics 2-stage pilot control valve of size 6
  • 1st stage as nozzle flapper plate amplifier
  • Filter for 1st stage externally accessible and replaceable
  • Subplate mounting: Porting pattern according to ISO 4401
  • Can also be used as 3-way version
  • Valve and integrated control electronics are adjusted and tested in the factory
  • Optimized valve control loop
  • High response sensitivity, very low hysteresis and zero point drift
  • Internal or external pilot oil supply and return
  • Gap seals at pressure chambers of the control sleeve, no wear of O-ring

Directional Servo Valve in 4 Way Version | Type 4WSE3E32 (NG32)

  • Size: 32
  • Component series: 5X
  • Maximum operating pressure: 315 bar
  • Maximum flow: 1 800 l/min

Features:

  • Valve for position, force, pressure or velocity control
  • 3-stage servo-valve with electrical position control of the control spool of the 3rd stage, position sensing of the control spool by means of an inductive position transducer
  • High dynamics 2-stage pilot control valve of size 6
  • 1st stage as nozzle flapper plate amplifier
  • Filter for 1st stage externally accessible and replaceable
  • Subplate mounting: Porting pattern according to ISO 4401
  • Can also be used as 3-way version
  • Valve and integrated control electronics are adjusted and tested in the factory
  • Optimized valve control loop
  • High response sensitivity, very low hysteresis and zero point drift
  • Internal or external pilot oil supply and return
  • Gap seals at pressure chambers of the control sleeve, no O-ring wear

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