4WS2EM10-5X/20B11VH1ET315K31DV-114

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth 4WS2EM10-5X/20B11VH1ET315K31DV-114 (R901096779) is a sophisticated servo valve designed for precise control of position, force, and velocity in hydraulic systems. This model features an electromechanical converter torque motor, a hydraulic amplifier with a nozzle-flapper plate mechanism, and a control spool within a sleeve for high accuracy and responsiveness. The torque motor operates through an electrical input signal that generates force via a permanent magnet, producing torque that moves the flapper plate and creates a pressure differential to adjust the control spool's position. This servo valve is characterized by its proportional flow control relative to the electrical input signal while considering the valve pressure drop. Equipped with integrated control electronics tailored to this specific valve type, it includes an externally adjustable potentiometer for zero-point calibration. The 4WS2EM10-5X/20B11VH1ET315K31DV-114 also features electric spool position detection and control through an inductive position transducer that works in tandem with the integrated electronics to correct any deviations from the command value. This ensures high dynamic performance and reliability even when electric power supply is disrupted, thanks to its mechanical feedback system. Designed for subplate mounting conforming to ISO standards, this servo valve boasts a dry control motor preventing contamination from hydraulic fluids. It can operate as both 3-way or 4-way valves and includes wear-free elements like the control spool return element. The robust construction includes a centrally fixed sleeve minimizing sensitivity to temperature and pressure variations, gap-sealed pressure chambers avoiding seal ring wear, and an easily accessible filter for maintenance purposes. Note that adjustments to the zero point must be carried out by trained specialists due to potential system damage risks.