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For plants that run their own pilot circuit, the 4WRZ25W8-220-7X provides the matching main stage. It meters 220 l/min nominal flow in size 25 and takes pilot oil entirely from outside, so supply and return of the pilot circuit stay clear of working pressure.
Proportional Directional Valve 4WRZ25W8-220-7X/6EG24K4/D3M - Bosch Rexroth R900976329
BOSCH REXROTH
Original product
Net price (excl. VAT)
€4,199.66
Item
BRR-R900976329
Manufacturer no.
R900976329
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R900976329
Country of originGermany
ConditionNew
Artikel
BRR-R900976329
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Where a separate pilot power unit already exists, the main stage should hang on it rather than on working pressure. The 4WRZ25W8-220-7X is built for exactly that, pilot oil arrives externally and leaves externally, while 220 l/min nominal flow is metered.
Benefits
- 220 l/min nominal flow within a maximum flow of 870 l/min.
- Pilot oil fed in and drained externally, pilot pressure is decoupled from working pressure.
- 350 bar maximum operating pressure on the ISO 4401-08-08-0-05 interface in size 25.
- Spool symbol W8, 3 switching positions, plus an integrated pressure reducing valve in the pilot stage.
- 20.52 kg weight, NBR seals, supplied at 24 VDC through a 7-pole plug to EN 175201-804.
Technical data
| 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 |
| Supply voltage | 24 VDC |
| 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, 3-pole (2 + PE) |
| Type of actuation | Electrical with external electronics |
| Weight | 20.52 kg |
Applications
It pays off on test benches and press lines with a central pilot unit feeding several axes. The external pilot circuit holds pilot pressure steady even when working pressure collapses. In service it replaces the same pilot variant of the same series.
Manufacturer
Bosch Rexroth, material number R900976329. Characteristic curves, pilot oil demand and installation dimensions appear in data sheet RE 29115, overview in catalogue RE 07600-B.
| Hersteller-Nr | R900976329 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 20.520000 |
| 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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