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A pilot circuit that neither feeds nor drains through the main channel stays untouched by its pressure history. The 4WRZ25E220-7X/6EG24N9K4/V is built that way and meters 220 l/min nominal flow with FKM seals.
Proportional Directional Valve 4WRZ25E220-7X/6EG24N9K4/V - Bosch Rexroth R900973420
BOSCH REXROTH
Original product
Net price (excl. VAT)
€4,170.19
Item
BRR-R900973420
Manufacturer no.
R900973420
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R900973420
Country of originGermany
ConditionNew
Artikel
BRR-R900973420
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Total price
Full separation of main and pilot circuits makes control behaviour independent of the load. The 4WRZ25E220-7X/6EG24N9K4/V feeds pilot oil in externally and drains it externally while metering 220 l/min nominal flow.
Benefits
- External pilot supply and external drain, pilot pressure does not follow load pressure.
- 220 l/min nominal flow in size 25, with peaks up to 870 l/min.
- No internal pressure reducing valve, pilot pressure is set on the plant side.
- FKM seals, 18.2 kg weight, spool symbol E across 4 ports.
- 350 bar maximum operating pressure, control at 24 VDC through external electronics.
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 applied on axes whose load pressure swings widely, for instance feed drives with changing tool engagement. Its separate pilot circuit keeps the step response equal throughout the cycle. Concealed auxiliary actuation assists during setup.
Manufacturer
Bosch Rexroth, material number R900973420. Characteristic curves, step response and installation dimensions appear in data sheet RE 29115, supplemented by catalogue RE 07600-B.
| Hersteller-Nr | R900973420 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 18.200000 |
| 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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