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A steady pilot pressure keeps the characteristic curve independent of load pressure. This size 25 4WRZE carries a pressure reducing valve in its pilot stage for that and meters 220 l/min nominal flow up to 350 bar, with NBR seals for mineral oil.
Proportional Directional Valve 4WRZE25W8-220-7X/6EG24ETK31/A1D3M - Bosch Rexroth R900954675
BOSCH REXROTH
Original product
Net price (excl. VAT)
€5,001.72
Item
BRR-R900954675
Manufacturer no.
R900954675
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R900954675
Country of originGermany
ConditionNew
Artikel
BRR-R900954675
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When system pressure swings with the machine cycle, the valve characteristic drifts along with it unless something holds it. The 4WRZE25W8-220-7X/6EG24ETK31/A1D3M fixes pilot pressure through a built-in pressure reducing valve and meters 220 l/min nominal flow on top of it.
Benefits
- Built-in pressure reducing valve keeps the characteristic stable under swinging system pressure.
- 220 l/min nominal flow, up to 870 l/min maximum flow, operating pressure up to 350 bar.
- Internal pilot oil supply and internal return on the ISO 4401-08-08-0-05 interface.
- Plus/minus 10 V command value on the on-board electronics, 24 VDC supply.
- Spool symbol W8, three switching positions on four ports.
- 20.73 kg, NBR seals for HL hydraulic fluid, UKCA conformity.
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 VDC |
| 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 | 20.73 kg |
Application
The valve works in presses, rolling mills and test rigs whose system pressure changes sharply within the cycle. NBR seals assume mineral oil. If fire resistant fluids are planned, choose the FKM build.
Manufacturer
Bosch Rexroth, material number R900954675. Characteristic curves and installation dimensions are given in data sheet RE 29115.
| Hersteller-Nr | R900954675 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 20.730000 |
| 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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