4WE6J6X/EG24N9/62SO43A-1221A

The 4WE6J6X/EG24N9/62SO43A-1221A directional valve is produced by Bosch Rexroth within the WE Directional Spool Valves series to shift hydraulic flow paths in automated machinery. It operates on a 24 V DC supply so panels with standard low-voltage power can energize the solenoids, and a ±10 % voltage tolerance keeps the coil stable when the supply drifts. The coil draws a rated current of 1.25 A, which combines with the circuit voltage to yield a nominal power requirement of 30 W for each energized state. A maximum coil surface temperature of 120 °C defines the thermal ceiling that must not be exceeded during continuous service. The design permits a 100 % ED duty cycle, allowing the valve to remain energized without enforced cool-down periods. A concealed manual override identified by the N9 code enables local shifting without removing protective covers. With two solenoids installed the assembly weighs 1.95 kg, a consideration for manifold mounting and support hardware.

For hydraulic integration, the porting pattern follows ISO 4401-03-02-0-05 so it bolts directly to standard CETOP 03 manifolds. Positioning is maintained by a locating hole and pin sized ISO 8752-3×8-St (/62), which keeps the body aligned during installation. Fluid sealing relies on NBR elastomers that are compatible with common mineral oils used in industrial systems. The valve withstands 350 bar on ports P, A, and B, giving it capacity for high-pressure circuits, while the tank port endures 210 bar in direct current operation to protect return lines. A maximum flow of 80 l/min defines the throughput it can switch without excessive pressure drop. Functional safety is reflected in an MTTFd of 300 years, indicating a very long statistical time to dangerous failure. These mechanical, hydraulic, and reliability parameters outline how the valve fits demanding automation tasks where precise and durable flow control is required.