Product Description:
The Bosch Rexroth 4WMD6GB5X/F (R900335194) is a precision-engineered directional spool valve designed to manage fluid flow start/stop and direction in hydraulic systems. As part of the WM.. series, this model prioritizes mechanical durability and user-friendly manual operation via a rotary knob, making it ideal for applications requiring hands-on control.
Key Features & Design
- Manual Actuation: Operated via a rotary knob, it offers intuitive control over flow paths.
- Spring-Centered Spool: Equipped with one or two return springs to maintain the spool in a neutral position when unactuated, enhancing safety.
- Detent Mechanism: Securely locks the spool in each position, ensuring consistent performance and preventing unintended movement.
- Throttle Insert: Required for applications with high switching flows; installed in port P to regulate flow and protect against damage from excessive rates.
Technical Advantages
- Robust Construction: Durable housing supports long-term use in harsh environments.
- Versatile Porting: Complies with DIN form A (no locating hole) and ISO (with locating hole) standards for flexible integration.
- High Performance: Rated for max pressure up to [X] bar and max flow up to [Y] L/min (specify values for SEO).
- Sensor Compatibility: Integrates inductive position switches or contactless proximity sensors for real-time monitoring.
Applications
Ideal for industries requiring manual flow control, including:
- Construction machinery (excavators, cranes)
- Agricultural equipment (tractors, harvesters)
- Material handling systems
- Mobile hydraulics (forestry, mining)
Why Choose Bosch Rexroth?
- Trusted Brand: Backed by Bosch Rexroth’s legacy of hydraulic innovation.
- Safety & Reliability: Spring-centering and detent mechanisms ensure fail-safe operation.
- Customization: Multiple way versions and port configurations adapt to diverse needs.
Considerations
- Throttle Insert : Mandatory for high-flow applications to prevent valve overload.
- Maintenance: Regular inspection of springs and detent mechanisms recommended for optimal performance.
Conclusion
The 4WMD6GB5X/F combines ruggedness, precision, and ease of use to deliver reliable hydraulic control. Its manual operation, ISO/DIN compliance, and sensor integration make it a top choice for professionals prioritizing dependability in demanding environments.
Features:
4/3-, 4/2- or 3/2-way version Porting pattern according to DIN 24340 form A (without locating hole) Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) Type
Technical date :
general
| Size | 6 |
| Weight (approx.) | | kg | 1.4 |
| Installation position | | | any |
| Ambient temperature range | NBR seals | °C | -20 … +80 |
| FKM seals | °C | -20 … +80 |
| Maximum actuating torque | | Ncm | 150 |
hydraulic
| Size | 6 |
| Maximum operating pressure | Port P | bar | 315 |
| Port A | bar | 315 |
| Port B | bar | 315 |
| Port T 1) | bar | 160 |
| Maximum flow | | l/min | 60 |
| Flow cross-section (spool position 0) | Symbol Q | | approx. 6 % of nominal cross-section |
| Symbol W | | approx. 3 % of nominal cross-section |
| Hydraulic fluid | | | see table |
| Hydraulic fluid temperature range | NBR seals | °C | -30 … +80 |
| FKM seals | °C | -20 … +80 |
| Viscosity range | | mm²/s | 2.8 … 500 |
| Maximum admissible degree of contamination of the hydraulic fluid 2) | | | Class 20/18/15 according to ISO 4406 (c) |
| 1) | With symbols A or B, port T must be used as leakage oil connection if the operating pressure exceeds the admissible tank pressure. |
| 2) | The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter. |
| Hydraulic fluid | Classification | Suitable sealing materials | Standards |
| Mineral oils | HL, HLP, HLPD, HVLP, HVLPD | NBR, FKM | DIN 51524 |
| Bio-degradable | Insoluble in water | HETG | NBR, FKM | VDMA 24568 |
| HEES | FKM |
| Soluble in water | HEPG | FKM | VDMA 24568 |
| Containing water | Water-free | HFDU, HFDR | FKM | ISO 12922 |
| Containing water | HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) | NBR, HNBR | ISO 12922 |
| Important information on hydraulic fluids! For further information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us! There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)! The flash point of the hydraulic fluid used must be 40 K higher than the maximum solenoid surface temperature. Flame-resistant – containing water: Maximum pressure differential per control edge 50 bar. Pressure pre-loading at the tank port >20% of the pressure differential; otherwise, increased cavitation Life cycle compared to operation with mineral oil HL, HLP 50 to 100% |
For applications outside these parameters, please consult us!
