3WE6A61B/CG24N9Z5L Rexroth Solenoid Directional Valve

Model Number	3WE6A50B/AW220-50NZ4, 3WE6A-10-A33/CG24N9K4, 3WE6A61B/CG24N9Z5L

Product Description

Product Overview

Models such as 3WE6A61B/CG24N9Z5L, 3WE6A-10-A33/CG24N9K4 and 3WE6A50B/AW220-50NZ4 belong to the Bosch Rexroth WE6 / 3WE6 series of direct-operated solenoid directional valves. Featuring wet-pin solenoid actuation of a spool valve, they comply with ISO 4401-03 (NG6) mounting standards. Every unit undergoes rigorous 100% simulated operating-condition testing and offers excellent drop-in interchangeability with equivalent solenoid directional valves. Reliable shifting performance and optional manual override make them ideal for directional control in industrial hydraulic systems.

Technical Specifications

Model examples: 3WE6A61B/CG24N9Z5L, 3WE6A-10-A33/CG24N9K4, 3WE6A50B/AW220-50NZ4
Valve type: Direct-operated solenoid directional valve (3/2, 4/2 or 4/3 way)
Nominal size: 6 = NG6
Mounting interface: ISO 4401-03-02-0-05
Maximum operating pressure: 350 bar at ports P, A, B; approx. 210 bar at port T (DC)
Maximum flow: approx. 60–80 l/min (depending on AC/DC and series)
Actuation: Wet-pin solenoid (e.g. G24 = 24 V DC)
Electrical connection: N9K4, Z5L connectors etc.
Seal material: NBR or FKM
Weight: approx. 1.45–2.6 kg (single solenoid); higher for dual solenoid
Hydraulic fluid compatibility: HL, HLP, HLPD, HVLP, HVLPD, etc.

Key Technical Advantages

Wet-pin solenoid design: Coil immersed in oil for excellent heat dissipation, low noise and long service life, suitable for continuous duty.
High-precision spool construction: Precisely machined spool and body deliver reliable shifting, low internal leakage and fast response.
Excellent drop-in interchangeability: Strict compliance with ISO 4401 mounting face allows direct replacement of equivalent Rexroth or other brand directional valves, minimizing modification costs and downtime.
Wide voltage and connection options: Supports multiple AC/DC voltages and connector types for flexible system integration.
Optional manual override: Some versions include a manual push pin for convenient commissioning and emergency operation.

Application Areas

Injection moulding machines, die-casting machines, metal-forming equipment, machine-tool hydraulics, packaging machinery, automated production lines, mobile equipment and other medium-to-high-pressure hydraulic circuits requiring reliable directional control.

Expert Maintenance Tips

Ensure mounting surfaces are clean and flat before installation; fit seals correctly and tighten specified bolts evenly to the recommended torque to prevent external leakage.
Maintain recommended fluid cleanliness per ISO 4406; use hydraulic fluids compatible with the installed seal material.
Use shielded cables for electrical connections and ensure supply voltage is within the rated range; verify correct coil wiring before first start-up.
Periodically inspect the valve body and solenoids for overheating or leakage; clean and protect mounting surfaces during long-term storage.
Do not disassemble the spool or solenoid assemblies. Coil or seal replacement should be performed only by technicians experienced with Rexroth products; always perform functional tests before returning the valve to service.

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