4WE6H6X/EW110N9/62SO43A-1221B

The 4WE6H6X/EW110N9/62SO43A-1221B directional spool valve is part of the WE Directional Spool Valves series manufactured by Bosch Rexroth for hydraulic automation circuits where controlled porting of pressure and return lines is required. The valve occupies nominal size 6, so it fits compact NG6 manifolds and keeps envelope dimensions small in modular stacks. Installation is through an NFPA D03 interface, giving quick interchangeability with other D03 devices. The porting pattern conforms to ISO 4401-03-02-0-05, which ensures sealing land alignment with standard sub-plates. On the pressure side, ports P, A, and B can be subjected to 350 bar, allowing the component to handle high system pressures without loss of function. It passes up to 60 liters per minute, supporting medium-flow actuation cylinders and motors. Electrical actuation is supplied at 110 V AC, 50 or 60 Hz, and the solenoid draws 220 VA at switch-on to overcome spool inertia. The coil accepts a ±10 percent voltage variation without compromising reliable shift performance.

The coil surface may reach 120 °C during energized duty, so surrounding components must tolerate that temperature. Continuous service is possible because the solenoid is rated for a 100 percent duty cycle, eliminating cool-down intervals in rapid-cycling machines. Insulation class H supports the elevated winding temperature and maintains dielectric strength over the product’s life. After the inrush, holding consumption drops to 50 VA, reducing heat build-up during steady energization. The valve can shift twice per second, so the maximum switching frequency of 2 Hz suits proportional sequencing tasks. Return line port T withstands 160 bar, permitting back-pressure-loaded circuits without premature spool leakage. A concealed manual override identified as N9 lets maintenance personnel reposition the spool when power is unavailable while protecting the button from accidental actuation. Total mass with two solenoids is 1.95 kg, enabling easy handling during manifold assembly.