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Large opencast machines move their booms slowly and under high load. The 4WRZE25W8-325-7X/6EG24N9K31/A1D3M meters 325 l/min nominal flow for that, with spool symbol W8, a ±10 V command value and both pilot paths external.
Proportional Directional Valve 4WRZE25W8-325-7X/6EG24N9K31/A1D3M - Bosch Rexroth R900767522
BOSCH REXROTH
Original product
Net price (excl. VAT)
€4,577.68
Item
BRR-R900767522
Manufacturer no.
R900767522
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R900767522
Country of originGermany
Customs tariff number84812010
ConditionNew
Artikel
BRR-R900767522
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A boom travels into a new position over minutes, and the motion must not judder. The 4WRZE25W8-325-7X/6EG24N9K31/A1D3M meters 325 l/min nominal flow under position control and takes pilot oil from a dedicated circuit that it drains to the outside.
Benefits
- Both pilot paths external, matching plants with a separate control oil unit.
- Nominal flow 325 l/min for large adjusting cylinders, plant maximum 870 l/min.
- Command value ±10 V with on-board electronics and internal position feedback.
- Spool symbol W8, 3 switching positions, ISO 4401-08-08-0-05, 4 ports, weight 20.66 kg.
- Operating pressure up to 350 bar, NBR seals, UKCA to SI2016/1091.
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 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 W8 |
| 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 | 20.66 kg |
Applications
The valve adjusts booms, bucket wheels and conveyor bridges in opencast mining as well as luffing jibs on harbour cranes. Because the pilot stage comes from its own circuit, it stays unaffected by long pipe runs in the working circuit. The concealed manual override allows emergency motion on site.
Manufacturer
Bosch Rexroth, material number R900767522. Characteristic curves, dimensions and limits are in datasheet RE 29115, supplemented by RE 07600-B.
| Hersteller-Nr | R900767522 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 20.660000 |
| 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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