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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

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 diagramISO 4401-08-08-0-05
Max. flow870 l/min
Product family4WRDE
Type of connectionSubplate mounting
Nominal flow350 l/min
Supply voltage24 VDC
ConnectivityAnalog, command value 4...20 mA
Number of switching positions3
Hydraulic fluidHL
Number of ports4
Electrical connection descriptionConnector, 7-pole (6 + PE) according to EN 175201-804
Spool symbolSymbol V1
Operating pressure, max.350 bar
Size25
SealsNBR
Electrical connectorConnector, 7-pole (6 + PE)
Type of actuationElectrical with on-board electronics
Weight17.5 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.

More Information
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