4WE10 Hydraulic Directional Solenoid Valve | Rexroth 4WE6 4WE10 Replacement

Genlu Hydraulic proudly introduces our 4WE Series industrial-grade, high-pressure spool-type directional solenoid valves. Engineered to manage the start, stop, and flow direction of hydraulic fluid within complex integrated circuits, this line serves as a precision-manufactured, drop-in replacement for the classic Rexroth 4WE6 and 4WE10 series directional valves. We specialize in supplying cross-referenced heavy-duty configurations, notably the 4WE10D5X/EG24N9K4/M (Material No: R901278760) and its manual-override variation 4WE10D5X/OFEG24N9K4/M (Material No: R901278763), along with full-range coverage of 4WE4, 4WE6, and 4WE10 frames.

Acting as the fundamental pilot commander to direct cylinders and motors, Genlu’s 4WE line conforms strictly to ISO 4401 interface criteria and fluid mechanics parameters. We guarantee 100% Drop-in Interchangeability across standard subplate mounting bolt patterns, port spacing dimensions (A, B, P, T layout), electrical power draw profiles, and spool configuration characteristics (D Function: 3-position, 4-way, dual solenoid, closed-center profile). Every production valve undergoes 100% full-pressure cycle frequency monitoring, cross-port micro-leakage audits, and continuous DC 24V actuation stress sweeps, ensuring lag-free transitions and extensive operational lifecycle boundaries under heavy mechanical shock.

Technical Specifications 

• Product Line: 4WE Series Direct-Operated Directional Spool Valve with Solenoid Actuation

• Core Covered Model Configurations: 4WE10D5X/EG24N9K4/M (R901278760), 4WE10D5X/OFEG24N9K4/M (R901278763)

• Nominal Valve Size: Size 10 (NG10 / Cetop 5 Interface Configuration)

• Spool Characteristic Code: D Function (3-position, 4-way, spring-centered, closed-center at neutral position)

• Design Component Sequence: 5X Series (Interchangeable mounting boundaries from 50 to 59 series)

• Maximum Working Pressure (Ports P, A, B): 31.5 MPa (315 bar)

• Maximum Allowable Tank Counter-Pressure (Port T): 16.0 MPa (160 bar)

• Maximum Rated Flow Capacity: 120 L/min

• Actuator Supply Specification: G24 Variant (High-output DC 24V wet-pin operating solenoid with detachable coil structure)

• Electrical Connectivity & Override Layout:

  • N9K4 Configuration: Large Hirschmann connection socket (ISO 4400), rated to IP65 environmental protection boundary

  • OFEG Configuration: Equipped with an integrated/protected manual override push-button interface

• Fluid Temperature Operation Envelope: -30°C to +80°C (Utilizes high-grade NBR sealing sets)

Key Technical Advantages:

• Wet-Pin DC Solenoids for Smooth High-Frequency Switching: The internal armature operates entirely submerged within the loop oil, which dampens impacts and lubricates moving elements. This eliminates the dynamic friction typical of conventional push-rod seals, drastically prolonging wear life while keeping acoustic emissions low during rapid cycle shifts.

• Cast Flow Channel Optimization for Reduced Pressure Drops: The valve body houses fluid-dynamically optimized internal cast galleries that widen the cross-sectional area without reducing structural wall strength. At maximum capacity (120 L/min), this limits internal pressure drop ($\Delta P$) by 18% compared to standard aftermarket options, reducing system thermal buildup.

• Micro-Tolerance Spool Clearance and Minimal Slip Leakage: The core spool is ground from premium alloy steel using multi-stage thermal conditioning and ultra-precise centerless grinding machines. Spool-to-bore clearances are held to strict micron tolerances, keeping internal bypass oil slip low at 31.5 MPa to protect actuator position metrics.

• Heavy-Duty Insulated Coils with Suppression Circuitry: Standardized with premium Class-H insulated G24 coils engineered for a 100% continuous duty cycle (ED 100%). The electrical terminal array features integrated surge-suppression diodes that neutralize reverse EMF spikes, shielding the central control PLC from voltage interference.

Application Areas:

• Heavy Machine Tools & Metal Processing: Directional manifold banks for CNC press brakes, scrap metal compactors, and hydraulic cutting shears.

• Plastics & Rubber Processing Machinery: Primary clamping core circuits, injection boosters, and sequencing manifolds for mid-sized injection molding machines and vulcanizing units.

• Mobile Hydraulics & Steel Mill Automation: Auxiliary hydraulic units for steel mill rolling lines, truck-mounted cranes, and industrial aerial lift leveling setups.

Expert Maintenance Tips:

• Enforce Port T Counter-Pressure Boundaries: This valve frame sets a hard tank line pressure threshold of 16 MPa. When laying out return plumbing, direct the T-line straight back to the reservoir or through a low-pressure return filter. Avoid linking high-pressure surge dumps into the same T-line, or the solenoids may fail to shift against the backpressure, risking structural damage to the armature casing.

• Optimize Solenoid Axis Mounting Orientation: While this valve series technically supports any mounting position, it is best to position the solenoid axis horizontally in systems prone to high-frequency cycling or fluid aeration. This helps clear micro air bubbles from the armature chamber, preventing erratic shifting, chattering, and localized coil overheating.

• Govern DC Power Supplies with Strict Ripple Controls: The DC 24V supply feeding the G24 coil must maintain a voltage ripple coefficient of under 5%. Excessive voltage drops or insufficient supply wattage can trap the spool in an incomplete intermediate state during transitions, causing current spikes that can burn out the coil assembly.