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Short cycle times call for plenty of oil in rapid traverse and a pilot stage that the return pressure does not disturb on the retract stroke. This build delivers 325 l/min nominal flow, takes control oil internally and drains it through its own line. ±10 V command, up to 350 bar.
Proportional Directional Valve 4WRZE25W8-325-7X/6EG24N9EK31/A1D3V - Bosch Rexroth R900964707
BOSCH REXROTH
Original product
Net price (excl. VAT)
€5,035.46
Item
BRR-R900964707
Manufacturer no.
R900964707
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R900964707
Country of originGermany
ConditionNew
Artikel
BRR-R900964707
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On the retract stroke of a large cylinder, pressure in the return line jumps, and that is exactly when the pilot stage should stay calm. This size 25 valve therefore separates the control-oil return while still taking the oil internally, and meters 325 l/min nominal flow at up to 350 bar.
Benefits
- 325 l/min nominal flow for short rapid-traverse times, up to 870 l/min possible through the valve.
- External pilot oil return, independent of pressure in the working return line.
- Internal control-oil take-off, so the external supply line is not needed.
- ±10 V command value at the on-board electronics, 24 VDC supply voltage.
- Spool symbol W8, 4 ports, 3 switching positions, ISO 4401-08-08-0-05, weight 20.7 kg.
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 VDC |
| Connectivity | Analog, command value ±10 V |
| Number of switching positions | 3 |
| Hydraulic fluid | HL |
| Number of ports | 4 |
| Electrical connection | Connector 7-pole (6 + PE) according to EN 175201-804 |
| Spool symbol | Symbol W8 |
| Operating pressure, max. | 350 bar |
| Size | 25 |
| Seals | FKM |
| Electrical connector | Connector, 7-pole (6 + PE) |
| Type of actuation | Electrical with on-board electronics |
| Weight | 20.7 kg |
Applications
The variant is used on presses and drawing lines with a high stroke rate and on test cylinders with fast load changes. The separated control-oil return has to run pressureless to tank. The concealed manual override remains available for set-up work.
Manufacturer
Bosch Rexroth, material number R900964707. Product family 4WRZ(E), pilot-operated, FKM seals, HL hydraulic fluid, subplate mounting. Further details are given in data sheets RE 29115 and RE 07600-B.
| Hersteller-Nr | R900964707 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 20.700000 |
| 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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