4WS2EM10-5X/10B11ET315K8BV

The 4WS2EM10-5X/10B11ET315K8BV servo valve is manufactured by Bosch Rexroth for the 4WS Servo Valves series. It meters hydraulic flow to actuators for precise position and force control in automation systems. The valve delivers a rated flow of 10 l/min at a differential pressure of 70 bar so it can regulate medium-size cylinders and motors. A maximum operating pressure of 315 bar allows use on high-pressure supply lines common in industrial presses and test rigs. Its nominal size of 10 defines the port geometry and links directly to flow capacity. The mounting pattern follows ISO 4401-05-05-0-05, permitting direct mounting on standard subplates without custom drilling. Pilot oil supply and return are both internal, which simplifies external plumbing and reduces leak paths. A mechanical return system re-centers the spool when the command signal is lost, maintaining neutral position for safety. The valve tolerates ambient temperatures from −30 °C to +100 °C, enabling installation in unconditioned machinery halls as well as heated enclosures.

Hydraulic media limits are equally defined: fluid temperatures may range from −15 °C to +80 °C so the unit can operate with oil warm-up yet avoid seal degradation. Acceptable viscosity spans 15 mm²/s to 380 mm²/s, ensuring stable control across cold starts and elevated operating heat. The specified cleanliness class of ISO 4406 18/16/13 requires filtration fine enough to protect the precision spool assembly from wear. Electrical actuation draws a coil rated current of 30 mA, matching low-power servo controllers commonly used in closed-loop systems. The housing carries an IP65 protection class, preventing dust ingress and water jets from affecting internal components. FKM seals are installed to resist mineral oils and elevated temperatures. These construction details complete the performance profile of the valve and ensure reliable service when mounted on equipment that conforms to the stated pattern and pressure ratings.