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Where pilot oil runs completely separate from the working circuit, this version is the right one. Pilot supply and return are external, and the valve controls 220 l/min in size 25 with a ±10 V DC command value at up to 350 bar.
Proportional Directional Valve 4WRZE25W9-220-7X/6EG24N9K31/A1D3M - Bosch Rexroth R900769050
BOSCH REXROTH
Original product
Net price (excl. VAT)
€5,370.98
Item
BRR-R900769050
Manufacturer no.
R900769050
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R900769050
Country of originGermany
Customs tariff number84812010
ConditionNew
Artikel
BRR-R900769050
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A fully separated pilot circuit makes piloting independent of what happens in the working circuit. The 4WRZE25W9-220-7X/6EG24N9K31/A1D3M uses external supply and external return for that and controls 220 l/min nominal flow in size 25.
Benefits
- External pilot oil supply and external return, decoupling piloting from working pressure.
- 220 l/min nominal flow, 870 l/min maximum, operating pressure up to 350 bar.
- Pressure reducing valve in the pilot circuit limits pilot pressure to a constant value.
- Symbol W9 in three switching positions with concealed auxiliary actuation.
- Command value ±10 V DC, supply 24 V DC, weight 20.78 kg, NBR seals.
Technical data
| Conformity description | UKCA - Electromagnetic compatibility (EMC) SI2016/1091 |
| Connection diagram | ISO 4401-08-08-0-05 |
| Max. flow | 870 l/min |
| Product family | 4WRZ(E) |
| Type of connection | Subplate mounting |
| Nominal flow | 220 l/min |
| Conformity | UKCA |
| Supply voltage | 24 V DC |
| Connectivity | Analog, command value ±10 V |
| Number of switching positions | 3 |
| Hydraulic fluid | HL |
| Number of ports | 4 |
| Electrical connection description | Connector 7-pole (6 + PE) according to EN 175201-804 |
| Spool symbol | Symbol W9 |
| Operating pressure, max. | 350 bar |
| Size | 25 |
| Seals | NBR |
| Electrical connector | Connector, 7-pole (6 + PE) |
| Type of actuation | Electrical with on-board electronics |
| Weight | 20.78 kg |
Applications
The valve controls axes in presses, test rigs and lifting gear whose power unit has its own pilot pump and a separate drain channel. That separation keeps pilot pressure constant even when working pressure swings heavily during the cycle. Mounting pattern ISO 4401-08-08-0-05 allows a direct swap within the range.
Manufacturer
Bosch Rexroth, material number R900769050. Data sheet RE 29115 lists characteristic curves and pilot oil demand, RE 07600-B holds general notes.
| Hersteller-Nr | R900769050 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 20.780000 |
| Zolltarifnummer | 84812010 |
| GPSR Herstellerdaten | Bosch Rexroth AG, Zum Eisengießer 1, DE-97816 Lohr am Main, www.boschrexroth.com |
| Artikel-Authentizität | Original product |
| Artikelzustand | New |
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