4WRKE25E350L-3X/6EG24ETK31/A1D3M-497

***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 4WRKE25E350L-3X/6EG24ETK31/A1D3M-497 (R978916377) is an advanced pilot-operated 2-stage proportional directional valve designed to manage flow direction and magnitude with precision. It features electrical position feedback for the main control spool and integrated electronics (OBE), ensuring accurate control and easy adjustment. The valve is suitable for subplate mounting, adhering to the porting pattern specified by ISO standards. This model's pilot control valve is a single-stage proportional directional valve that ensures a consistent solenoid force across the entire control stroke due to its optimized control edge geometry. The main stage of the valve provides position control, which means that the spool position remains stable regardless of flow forces, even at higher flows. This stability is crucial for applications requiring precise movement and flow regulation. The robust construction includes a housing, proportional solenoids with detachable coils, a main control spool, covers, centering spring, inductive position transducer, and a pressure-reducing valve. When there is no input signal present, the centering spring holds the main control spool in a neutral position. The inductive position transducer communicates spool positioning to the integrated control electronics, which adjust current supply to the solenoids based on command values. For proper operation, it's important that tank lines remain filled; if necessary due to installation conditions, a preload valve with approximately 5 bar preload pressure must be installed. The zero-point adjustment for this model has been factory-set but can be fine-tuned within ±10% of nominal stroke through an accessible potentiometer within the electronics module. It's important to note that any adjustments or maintenance should only be conducted by trained specialists to avoid system damage or malfunctions. This Bosch Rexroth proportional directional valve represents a sophisticated component designed for high-performance hydraulic systems where precise flow control is paramount.