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If you want to separate the pilot drain but avoid running a pilot pump, this variant is the middle path. Internal take-off, external return, 220 l/min nominal flow in size 25 and a ±10 V DC command value at up to 350 bar.
Proportional Directional Valve 4WRZE25W9-220-7X/6EG24N9EK31/A1D3M - Bosch Rexroth R900750197
BOSCH REXROTH
Original product
Net price (excl. VAT)
€4,830.94
Item
BRR-R900750197
Manufacturer no.
R900750197
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R900750197
Country of originGermany
Customs tariff number84812010
ConditionNew
Artikel
BRR-R900750197
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Between fully internal and fully external piloting sits a practical mixed form. The 4WRZE25W9-220-7X/6EG24N9EK31/A1D3M takes pilot oil from the working circuit but discharges it through a dedicated port, at 220 l/min nominal flow in size 25.
Benefits
- Internal pilot oil supply saves the pilot pump while the external return keeps pilot pressure clean.
- 220 l/min nominal flow, 870 l/min maximum flow, operating pressure up to 350 bar.
- Command value ±10 V DC, matching analogue axis control cards, supply 24 V DC.
- Pressure reducing valve in the pilot circuit, symbol W9 with three switching positions.
- Concealed auxiliary actuation, weight 20.88 kg, mounting pattern ISO 4401-08-08-0-05.
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 | 20.88 kg |
Applications
The valve is used on axes in presses and special purpose machines whose power unit should stay lean while the return line carries pressure. Internal take-off combined with an external drain is the usual compromise for that. Within the range the version can be exchanged for variants with different piloting.
Manufacturer
Bosch Rexroth, material number R900750197. Pilot oil demand and characteristic curves are given in data sheet RE 29115, general notes in RE 07600-B.
| Hersteller-Nr | R900750197 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 20.880000 |
| Zolltarifnummer | 84812010 |
| GPSR Herstellerdaten | A1-ESD equipment GmbH. Keldersstr. 15, DE-42697 Solingen, www.esd.equipment |
| Artikel-Authentizität | Original product |
| Artikelzustand | New |
| Position sensing | No |
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