Servo Directional Valve 4WS2EM10-5X/30B11ET315K31EV - Bosch Rexroth R900949285

Nozzle and flapper plate move the pilot spool with very small forces, and that is what makes a servo valve fast. The 4WS2EM10-5X/30B11ET315K31EV applies this principle in size 10 at 30 l/min nominal flow and 315 bar maximum operating pressure.

Benefits

• Nozzle and flapper pilot stage with internal spool position feedback, spool position is measured and corrected.
• 30 l/min nominal flow at 315 bar maximum operating pressure in size 10.
• Spool symbol V with three switching positions across four ports on the ISO 4401-05-05-0-05 pattern.
• Supply ±15 VDC through a 7-pole (6 + PE) plug to EN 175201-804, driven by external electronics.
• FKM seals, 3.6 kg weight, directly actuated for HL hydraulic fluid.

Applications

The valve is used in position, force and pressure control loops on test rigs, simulators and forming machines. The nozzle and flapper stage reacts sensitively to contamination, so the oil cleanliness required by the manufacturer has to be observed. The control electronics sit outside the valve and are supplied with ±15 VDC.

Manufacturer

Bosch Rexroth, material number R900949285. Frequency response, step response and the required cleanliness class are taken from the manufacturer documentation for this valve family.