4WRZEM25W6-325-1X/6EG24ETK31/A1M

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The Bosch Rexroth 4WRZEM25W6-325-1X/6EG24ETK31/A1M (R901275575) is an advanced electrohydraulically actuated proportional directional valve designed for precise control of flow direction and size in hydraulic systems. This model features a pilot-operated valve with proportional solenoids that facilitate smooth operation and spool position indication for accurate feedback. The main valve consists of a main control spool, valve spring, and position indicator, which work together to maintain stability and responsiveness. Functionally, the main control spool is held in the central position by the valve spring when solenoids are deenergized. Energizing a solenoid causes pilot oil to enter the pressure chamber and move the main control spool proportionally against the spring force according to the electrical input signal. This action enables progressive flow characteristics through orifice-type cross-sections from port P to A and B to T. The valve also includes an optional manual override feature that requires caution due to potential uncontrolled machine movements. The spool position indicator utilizes inductive switches to provide switching outputs that can be integrated into superior controls for monitoring functions. Electrical connections are made through a four-pin connector with separate pins for signal output and voltage supply. This Bosch Rexroth valve is particularly suitable for applications with high safety requirements such as hydraulic press control systems. It meets safety-related component standards according to category 3, EN ISO 13849-1, ensuring reliable performance in critical environments. Additionally, it features integrated electronics (OBE), a switching position indicator, compatibility with subplate mounting conforming to ISO porting patterns, an optional auxiliary operating device, and a spring-centered control spool for enhanced operational safety and versatility.