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Where pilot pressure is already limited by the power unit, a second reducing valve inside the valve is redundant. The 4WRZ25E220-7X/6EG24N9EK4/V manages without one, meters 220 l/min nominal flow and carries FKM seals.
Proportional Directional Valve 4WRZ25E220-7X/6EG24N9EK4/V - Bosch Rexroth R978918767
BOSCH REXROTH
Original product
Net price (excl. VAT)
€4,170.19
Item
BRR-R978918767
Manufacturer no.
R978918767
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R978918767
Country of originGermany
Customs tariff number84812010
ConditionNew
Artikel
BRR-R978918767
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Total price
A reducing valve in the pilot stage costs height and adds one more adjustment point. The 4WRZ25E220-7X/6EG24N9EK4/V leaves it out because pilot oil already arrives limited, and meters 220 l/min nominal flow in size 25.
Benefits
- Version without an internal pressure reducing valve, pilot pressure comes from the plant.
- 220 l/min nominal flow within a maximum flow of 870 l/min.
- Pilot oil taken internally, returned externally, so the return stays unpressurised.
- FKM seals for circuits in which NBR is not approved.
- 18.2 kg weight, spool symbol E, concealed auxiliary actuation, 350 bar operating pressure.
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 E |
| Operating pressure, max. | 350 bar |
| Size | 25 |
| Seals | FKM |
| Electrical connector | Connector, 3-pole (2 + PE) |
| Type of actuation | Electrical with external electronics |
| Weight | 18.2 kg |
Applications
The valve is used on plants with a centrally protected pilot circuit, such as test benches and plastics machinery. Concealed auxiliary actuation allows the axis to be moved without energising the coil. Control runs through an external amplifier card at 24 VDC.
Manufacturer
Bosch Rexroth, material number R978918767. Characteristic curves, step responses and dimensions appear in data sheet RE 29115, supplemented by catalogue RE 07600-B.
| Weight | 18.200000 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Hersteller-Nr | R978918767 |
| Zolltarifnummer | 84812010 |
| GPSR Herstellerdaten | Bosch Rexroth AG, Zum Eisengießer 1, DE-97816 Lohr am Main, www.boschrexroth.com |
| Artikelzustand | New |
| Artikel-Authentizität | Original product |
| Country of Manufacture | Germany |
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