REXROTH

Bosch Rexroth 4WE6D6X/EW110N9K4 R900551704 is a direct operated directional spool valve with solenoid actuation, designed for reliable start, stop, and direction control of hydraulic oil flow in industrial hydraulic systems. This valve belongs to the Bosch Rexroth WE6 series and is used in applications requiring compact size, fast switching, and stable directional control.

The valve is a size 6 / NG6 hydraulic directional valve with subplate mounting interface according to ISO 4401-03. It is suitable for standard D03 hydraulic manifold systems and can be integrated into hydraulic power units, automation equipment, machine tools, presses, and industrial machinery requiring accurate flow direction switching.

The model code 4WE6D6X/EW110N9K4 identifies a solenoid operated directional spool valve with D spool symbol, component series 6X, 110V AC solenoid voltage, N9 concealed manual override, and K4 electrical connection. The valve uses wet-pin solenoids with detachable coils, allowing coil replacement without opening the pressure-tight hydraulic chamber. This design supports easy maintenance and reduces downtime during service.

The Bosch Rexroth WE6 series is designed for high-performance directional control. According to Rexroth technical data for the WE6 series, the valves are available in 4/3, 4/2, and 3/2 directional designs and feature high-power solenoids. The series supports a maximum operating pressure up to 350 bar and is designed for hydraulic systems requiring stable operation under demanding conditions.

This valve is commonly used in industrial hydraulic circuits where reliable electrical actuation and repeatable spool movement are required. It can be applied in clamping systems, material handling equipment, hydraulic presses, injection molding machinery, machine tools, and automated production lines. These applications require precise switching behavior and consistent hydraulic response during continuous duty operation.

The 110V AC electrical configuration makes this model suitable for systems using AC solenoid control power. The K4 connector style provides a standard electrical interface for industrial wiring, while the concealed N9 manual override allows emergency or service operation when required. Proper wiring, grounding, and connector sealing are important for stable electrical performance in industrial environments.

From a hydraulic system perspective, the valve provides dependable flow switching and helps maintain predictable actuator movement. Clean hydraulic oil and proper filtration are important for long service life, stable spool movement, and reduced internal wear. Contamination control should always be considered during installation and maintenance.

For related hydraulic components and compatible directional valves, visit our hydraulic valves category. For technical confirmation, price checking, and procurement support, submit your request through the contact page.

Official product reference: Bosch Rexroth official product page for R900551704.

Conclusion: Bosch Rexroth 4WE6D6X/EW110N9K4 R900551704 is a reliable NG6 directional spool valve designed for industrial hydraulic systems requiring 110V AC solenoid operation, ISO 4401-03 mounting compatibility, stable flow direction control, and long-term hydraulic performance.

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