Rexroth 4WE10U5X/HG24N9K4/M Directional Valve - Parameter Table

Rexroth 4WE10U5X/HG24N9K4/M Directional Valve - FAQ

Q1: What is the main function of the "U5X" spool?

A:​ The "U5X" spool has a unique center position. In the neutral (spring-centered) state, it connects the pressure port (P) to both work ports (A and B), while the tank port (T) is completely blocked. This applies equal system pressure to both sides of a connected actuator, such as a cylinder.

Q2: What is this "P to A&B, T blocked" center position used for?

A:​ This configuration is used for specific applications where an actuator must be held under equal pressure from both sides in its neutral state. It is often used in circuits that require differential cylinder control, or to create a hydraulic lock that resists external movement in both directions. It is not a common standard function like open or tandem center.

Q3: How is the valve operated?

A:​ It is controlled by a single 24V DC solenoid ("HG24N9K4" coil). Energizing the solenoid shifts the spool to a working position, directing flow to one actuator port. De-energizing it allows internal springs to return the spool to the center position described above. A manual override is provided.

Q4: What are the key operating limits?

A:​ Maximum operating pressure: 315 bar. Maximum recommended flow rate: 60 liters per minute.

Q5: What are the electrical details?

A:​ The solenoid operates on 24V DC, with a protection class of IP65. Refer to the official data sheet for exact power consumption, inrush current, and other electrical specifications.

Q6: How is the valve mounted and connected?

A:​ It mounts on a standard ISO 4401-05 (CETOP 5) subplate. Hydraulic ports are G 1/4". Electrical connection is via a plug connector.

Q7: What fluid and maintenance are required?

A:​ Use standard mineral-based hydraulic oils (HL, HLP). High fluid cleanliness (ISO 4406 20/18/15 recommended) with proper filtration is essential for reliability