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Back pressure in the tank line acts on the pilot circuit and shifts the zero point. This size 25 valve draws pilot oil internally but drains it through a separate Y port free of pressure. It follows a 4...20 mA current command and meters 350 l/min at 350 bar.
Proportional Directional Valve 4WRDE25V1-350L-6X/MPY/24F1 - Bosch Rexroth R901529898
BOSCH REXROTH
Original product
Net price (excl. VAT)
€8,859.31
Item
BRR-R901529898
Manufacturer no.
R901529898
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R901529898
Country of originGermany
Customs tariff number84812010
ConditionNew
Artikel
BRR-R901529898
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High return pressure in the tank gallery disturbs pilot control more than the characteristic curve suggests. The 4WRDE25V1-350L-6X/MPY/24F1 takes pilot oil internally and drains it separately through Y while metering 350 l/min at 350 bar from a 4...20 mA current command.
Benefits
- Separate pilot oil drain through Y keeps the pilot circuit clear of back pressure in the tank gallery.
- Internal pilot oil supply saves the X line, only the Y drain is added.
- 350 l/min nominal flow at 350 bar, V1 spool, body limit 870 l/min.
- 4...20 mA current command through a 7-pole connector (6 + PE) to EN 175201-804.
- 17.5 kg on ISO 4401-08-08-0-05, NBR seals, 24 V DC supply.
Technical data
| Connection diagram | ISO 4401-08-08-0-05 |
| Max. flow | 870 l/min |
| Product family | 4WRDE |
| Type of connection | Subplate mounting |
| Nominal flow | 350 l/min |
| Supply voltage | 24 VDC |
| Connectivity | Analog, command value 4...20 mA |
| 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 V1 |
| 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 | 17.5 kg |
Applications
The layout suits test rigs and presses whose return flow passes through cooler and filter and therefore builds up back pressure. Even with several axes working in parallel the zero point stays stable. HL hydraulic fluid and a 24 V DC supply match common plant standards.
Manufacturer
Bosch Rexroth, type designation 4WRDE25V1-350L-6X/MPY/24F1, material number R901529898, product family 4WRDE. The electronics sit inside the unit, so a separate amplifier card is unnecessary.
| Weight | 17.500000 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Hersteller-Nr | R901529898 |
| 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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