Rexroth 4WE10H5X/HG24N9K4/M Directional Valve - Parameter Table

Rexroth 4WE10H5X/HG24N9K4/M Directional Valve - FAQ

Q1: What is the function of the "H5X" spool?

A:​ The "H5X" spool is a specialized differential-type valve. In its neutral (center) position, it blocks the main pressure port (P), connects work port B to the pressure line, and connects work port A to the tank (T). This applies system pressure to one side of a cylinder (port B) while allowing the other side (port A) to drain.

Q2: How is this different from the G5X spool?

A:​ The H5X is the functional mirror of the G5X spool. While the G5X applies pressure to port A and drains port B in the center position, the H5X applies pressure to port B and drains port A. The choice depends on which side of the actuator (e.g., rod side or cap side of a cylinder) needs to be pressurized when the valve is centered.

Q3: What is a typical application for this valve?

A:​ It is used in hydraulic circuits where a cylinder or other actuator must be held in a specific intermediate position with pressure applied to one side. This is common in clamping, positioning, or certain safety-holding applications where the load must be secured in a particular orientation when the valve is not actively being operated.

Q4: How is the valve controlled?

A:​ It is operated by a single 24V DC solenoid coil ("HG24N9K4"). Energizing the coil shifts the spool to a full flow position. When de-energized, a spring returns the spool to the H5X center position. A manual override is included for setup and troubleshooting.

Q5: What are the operating limits?

A:​ The valve has a maximum operating pressure of 315 bar and a maximum recommended flow of 60 l/min. It uses standard ISO 4401-05 (CETOP 5) mounting and requires clean hydraulic fluid (ISO 4406 20/18/15 recommended) for reliable operation.