4WS2EM10-5X/30B11ET315K31BV

The 4WS2EM10-5X/30B11ET315K31BV valve belongs to the 4WS Servo Valves series from Bosch Rexroth. This proportional unit meters hydraulic fluid to control actuators in closed-loop motion systems. A rated flow of 30 l/min defines the maximum volume the spool can pass, aligning it with medium-size cylinders. The valve tolerates a maximum operating pressure of 315 bar so it can be placed on high-pressure supply manifolds common in industrial presses. Each electromagnetic coil draws a rated current of 30 mA, allowing low-power drive electronics to command the spool. Coil resistance is 85 Ω, establishing the voltage drop required for that current. When the coils are wired in parallel the inductance is 0.25 H, providing quick magnetic rise times for fast control.

If the coils are connected in series the inductance rises to 1.0 H, which slows current change and helps smooth small signal inputs. The return port may see up to 10 bar static pressure, enabling back-pressure filtration circuits without affecting null position. Environmental protection is IP65, so the enclosure resists dust ingress and water jets during machine wash-down. FKM seals are fitted to withstand mineral oils and many synthetic fluids at elevated temperatures. The assembled body weighs 3.56 kg, a consideration for manifold support brackets and robotic end effectors. These characteristics position the valve for precise, reliable hydraulic automation while maintaining compatibility with standard industrial control hardware.