4WRKE25W350P-3X/6EG24EK31/A1D3M-877

***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 4WRKE25W350P-3X/6EG24EK31/A1D3M-877 (R901094905) is a sophisticated pilot-operated 2-stage proportional directional valve with electrical position feedback and integrated electronics (OBE). This valve is designed for controlling flow direction and size through proportional solenoid operation. It is suitable for subplate mounting, with a porting pattern according to ISO standards. The valve's main stage features position control, ensuring the control spool position remains consistent regardless of flow forces, even at high flow rates. The main control spool is spring-centered and comes equipped with an inductive position transducer for precise feedback. This allows for accurate adjustments to be made until the actual value aligns with the command value, maintaining a force-balanced controlled position. The pilot control valve component of this model is a single-stage proportional directional valve that works seamlessly with the main stage. It includes optimized control edge geometry specifically designed for use as a pilot control valve for WRKE type valves. The unit's proportional solenoids are pressure-tight, wet-pin DC solenoids with detachable coils that convert electric current into mechanical force proportionally. This model has been engineered to ensure low deviation in series production by integrating both valve and electronics, which can be accessed and adjusted if necessary by qualified specialists only. It includes a factory-set zero point adjustment on the main stage, which can be fine-tuned within a certain range via a potentiometer in the control electronics. For optimal operation, it's important to prevent the tank lines from running empty; if installation conditions require it, a preload pressure of approximately 5 bar must be installed. Users should note that any changes in the zero point could potentially cause system damage and should only be executed by trained professionals. This product exemplifies Bosch Rexroth's commitment to precision engineering and reliability in hydraulic systems components.