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Servo Valve 
4WREE
- Size 6, 10
- Component series 2X
- Maximum operating pressure 315 bar
- Maximum flow 180 l/min
general
| Type | 4WREE | ||
| Size | 6 | 10 | |
| Installation position | any, preferably horizontal | ||
| Ambient temperature range | °C | -20 … +50 | |
| Storage temperature range | °C | -20 … +80 | |
| Weight | kg | 2.4 | 6.5 |
| MTTFD values according to EN ISO 13849 1) | y | 150 | |
| 1) | With control spool types E, E1, EA, W, W1, WA; in longitudinal control spool direction, there is sufficient positive overlap without shock/vibration load; observe the installation orientation with regard to the main direction of acceleration. |
hydraulic
| Size | 6 | 10 | ||
| Maximum operating pressure | bar | 315 | ||
| Maximum operating pressure | Port P | bar | 315 | |
| Port T | bar | 210 | ||
| Anschluss A | bar | 315 | ||
| Port B | bar | 315 | ||
| Maximum flow | l/min | 80 | 180 | |
| Nominal flow | l/min | 4 8 16 32 | 25 50 75 | |
| Hydraulic fluid | see table below | |||
| Hydraulic fluid temperature range | °C | -20 … +80 | ||
| preferably | °C | +40 … +50 | ||
| Viscosity range | mm²/s | 20 … 380 | ||
| preferably | mm²/s | 30 … 46 | ||
| Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1) | Class 20/18/15 according to ISO 4406 (c) | |||
| Hysteresis | % | ≤ 0.1 | ||
| Range of inversion | % | ≤ 0.05 | ||
| Response sensitivity | % | ≤ 0.05 | ||
| Zero shift upon change of | Hydraulic fluid temperature | %/10 K | ≤ 0.15 | |
| Operating pressure | %/100 bar | ≤ 0.1 | ||
| 1) | 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 and related hydrocarbons | HL, HLP | NBR / FKM | DIN 51524 |
| Flame-resistant – containing water | HFC (Fuchs HYDROTHERM 46M, Petrofer Ultra Safe 620) | NBR | ISO 12922 |
