4WS2EM10-5X/5B11XHET315K31EV

***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/5B11XHET315K31EV (R901052147) is a high-performance stage directional servo valve designed for precise control in hydraulic systems. This model is engineered for controlling position, force, pressure, or velocity and features a porting pattern conforming to ISO standards, making it suitable for a wide range of applications. The valve operates through an electromechanical converter torque motor, which utilizes an electrical input signal to generate a force that acts on the armature and results in torque. This torque then moves the flapper plate from its central position between two control nozzles, creating a pressure differential across the control spool. The innovative design includes a hydraulic amplifier principle with a nozzle flapper plate and a control spool within a sleeve. The spool's motion is balanced by mechanical feedback via a bending spring connected to the flapper plate or the torque motor. This balance ensures precise flow regulation proportionate to the electrical input signal while considering valve pressure drop. This particular model includes external control electronics (servo amplifier) that need to be ordered separately and are essential for actuating the valve in a flow-controlled manner by amplifying an analog input signal. It is suitable for use in potentially explosive areas of zone 1 and can operate as both 4-way and 3-way versions. The unit features dry solenoid operation preventing contamination by hydraulic fluid, wear-free spool feedback elements, and external modular-designed electronics. Additional advantages include easy access to filters for maintenance, individual ordering options for internal/external pilot oil supply and return, flow force compensation on the spool, centrically fixed control sleeves reducing sensitivity to temperature and pressure variations, as well as gap-sealed pressure chambers at the control sleeve eliminating seal ring wear. Each valve is meticulously adjusted and tested before delivery to ensure optimal performance upon installation.