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If the power unit has no pilot pump, the valve must take pilot oil itself and drain it internally. This size 25 version is built exactly that way, with 220 l/min nominal flow, a 4 to 20 mA current command signal and a pressure reducing valve in the pilot circuit.
Proportional Directional Valve 4WRZE25W9-220-7X/6EG24N9ETK31/F1D3M - Bosch Rexroth R901133735
BOSCH REXROTH
Original product
Net price (excl. VAT)
€4,830.94
Item
BRR-R901133735
Manufacturer no.
R901133735
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R901133735
Country of originGermany
ConditionNew
Artikel
BRR-R901133735
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Driving a large axis without a separate pilot circuit calls for a valve that supplies itself completely. The 4WRZE25W9-220-7X/6EG24N9ETK31/F1D3M takes pilot oil internally, returns it internally and controls 220 l/min nominal flow at operating pressure up to 350 bar.
Benefits
- Internal pilot oil supply and internal return, so no extra pilot lines are needed on the manifold.
- Integrated pressure reducing valve holds pilot pressure steady even when working pressure varies.
- 220 l/min nominal flow in size 25, up to 870 l/min maximum flow across the range.
- Current command value of 4 to 20 mA, robust against long cable runs in distributed plants.
- Concealed auxiliary actuation for commissioning and fault finding, weight 20.84 kg.
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 4 to 20 mA |
| 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 | 20.84 kg |
Applications
The valve is installed in presses, injection moulding machines and lifting gear whose power unit carries a single main pump. With piloting and return routed internally, plumbing effort stays low. Symbol W9 with three switching positions covers the usual directional function of a controlled axis.
Manufacturer
Bosch Rexroth, material number R901133735. Data sheet RE 29115 holds characteristic curves and installation dimensions, RE 07600-B adds general notes on hydraulic valves.
| Hersteller-Nr | R901133735 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 20.840000 |
| 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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