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In hot surroundings across long cable runs an interference-proof signal counts. This build accepts 4...20 mA to meter 325 l/min nominal flow at 350 bar. Pilot oil is taken internally, the drain sits outside.
Proportional Directional Valve 4WRZE25W6-325-7X/6EG24N9EK31/F1V - Bosch Rexroth R901021978
BOSCH REXROTH
Original product
Net price (excl. VAT)
€5,052.46
Item
BRR-R901021978
Manufacturer no.
R901021978
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Brand new
Specialist dealer since 2009
Original product
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Product data
Manufacturer no.R901021978
Country of originGermany
ConditionNew
Artikel
BRR-R901021978
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The main spool of this pilot-operated valve releases up to 325 l/min, the flow limit being 870 l/min at 350 bar operating pressure. Control runs on a 4...20 mA current command, which arrives without level loss even over long cabling.
Benefits
- 325 l/min nominal flow, 870 l/min flow limit, 350 bar operating pressure
- Input signal 4...20 mA, no level loss over long cable runs
- Internal pilot oil supply, external pilot oil return
- Spool symbol W6, 3 switching positions, concealed manual override for commissioning
- FKM seals for HL fluid, UKCA to SI2016/1091, mass 20.16 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 | 325 l/min |
| Conformity | UKCA |
| Supply voltage | 24 VDC |
| Connectivity | Analog, command value 4...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 W6 |
| Operating pressure, max. | 350 bar |
| Size | 25 |
| Seals | FKM |
| Electrical connector | Connector, 7-pole (6 + PE) |
| Type of actuation | Electrical with on-board electronics |
| Weight | 20.16 kg |
Applications
Foundries, forges as well as hot forming lines use such valves because cabinet and machine stand far apart there. Internal pilot pickup saves one line in the manifold. At 325 l/min there is ample reserve up to the 870 l/min flow limit.
Manufacturer
Material number R901021978 at Bosch Rexroth. Every curve plus the connector pin assignment appear in data sheet RE 29115.
| Hersteller-Nr | R901021978 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 20.160000 |
| 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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