R900598358 Bosch Rexroth: Industrial Hydraulic Control
The R900598358 (Type Code: 4WE 6 J6X/EG24N9K4) is a direct-operated directional spool valve from Bosch Rexroth, the global leader in industrial hydraulics. This specific model is a standard CETOP 3 (Size 6) valve, widely used to control the start, stop, and direction of fluid flow in hydraulic circuits. It features a solenoid operator running on 24 VDC, making it compatible with standard industrial automation power supplies. The «J» symbol indicates the spool type (typically a throttle spool or specific transition function), critical for managing actuator movement in presses, injection molding machines, and machine tools.
Key Technical Characteristics
- Valve Type: 4/2 or 4/3 Directional Control Valve.
- Size: 6 (CETOP 3 / NG6).
- Spool Symbol: J (Check hydraulic schematic).
- Series: 6X (Interchangeable with 60-69).
- Voltage: 24 VDC.
- Connection: Connector to DIN EN 175301-803.
- Override: Concealed manual override (N9).
Field Diagnostics & Integration
Lifecycle State: Active. Diagnosis: If the valve fails to shift, check the solenoid coil resistance. A burnt coil (open circuit) is common if the valve spool gets stuck due to oil contamination (varnish). Use the manual override (concealed under a cap) to test mechanical movement. Installation Advice: Ensure the mounting surface is clean and the O-rings are seated correctly to prevent leakage at the subplate interface. Torque the four mounting bolts to 9 Nm. Compatibility: Seamlessly integrates with Siemens S7-1200/1500 digital outputs (24V). For high-frequency cycling applications, consider adding a surge suppressor to the connector to protect the PLC output card from back-EMF spikes.
| Feature | Specification |
|---|---|
| Max Operating Pressure | 350 bar (Ports P, A, B) |
| Max Flow | 80 l/min |
| Fluid Temp | -30°C to +80°C |
| Weight | Approx. 1.5 kg |
Pro-Tip
The «High-Power» solenoid used in the 6X series ensures reliable shifting even under maximum pressure drop conditions, preventing «hydraulic lock» that cheaper valves suffer from.
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