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This variant draws pilot oil externally and returns it internally, which saves a line in foundries and steel plants. It meters 220 l/min nominal at 350 bar through the W6 spool, with the command value arriving as ±10 V at the on-board electronics.

Proportional Directional Valve 4WRZE25W6-220-7X/6EG24N9TK31/A1D3M - Bosch Rexroth R900749456

BOSCH REXROTH Original product
Net price (excl. VAT)
€4,823.97
Item BRR-R900749456
Manufacturer no. R900749456
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Brand new Specialist dealer since 2009 Original product Worldwide shipping
Product data
Manufacturer no.R900749456
Country of originGermany
Customs tariff number84812010
ConditionNew
Artikel
BRR-R900749456
Frequently Bought Together

In hot, contamination-prone plants pilot oil is often taken from a clean auxiliary circuit. That is what this version with external pilot supply and internal pilot return is built for, metering 220 l/min nominal at 350 bar.

Benefits

  • External pilot oil supply allows filtered pilot oil independent of the main circuit
  • Internal pilot oil return saves a separate line back to the tank
  • Nominal flow 220 l/min, up to 870 l/min through the valve at 350 bar
  • Command value ±10 V straight into the on-board electronics, no separate amplifier card
  • W6 spool, three switching positions, four ports
  • Subplate to ISO 4401-08-08-0-05, weight 20.56 kg

Technical data

Conformity descriptionUKCA - Electromagnetic compatibility (EMC) SI2016/1091
Connection diagramISO 4401-08-08-0-05
Max. flow870 l/min
Product family4WRZ(E)
Type of connectionSubplate mounting
Nominal flow220 l/min
ConformityUKCA
Supply voltage24 VDC
ConnectivityAnalog, command value ±10 V
Number of switching positions3
Hydraulic fluidHL
Number of ports4
Electrical connection descriptionConnector 7-pole (6 + PE) according to EN 175201-804
Spool symbolSymbol W6
Operating pressure, max.350 bar
Size25
SealsNBR
Electrical connectorConnector, 7-pole (6 + PE)
Type of actuationElectrical with on-board electronics
Weight20.56 kg

Application

The version matches continuous casting lines, forging presses and steelworks cranes where the main circuit runs under heavy load. A concealed auxiliary actuation moves the axis if a fault occurs. Operation is on HL hydraulic fluid with NBR seals at 24 VDC.

Manufacturer

Bosch Rexroth lists this valve under material number R900749456. The manufacturer datasheet with characteristic curves, port pattern and installation dimensions is available in the download area of this page.

More Information
Hersteller-Nr R900749456
Manufacturer Bosch Rexroth
Country of Manufacture Germany
Weight 20.560000
Zolltarifnummer 84812010
GPSR Herstellerdaten Bosch Rexroth AG, Zum Eisengießer 1, DE-97816 Lohr am Main, www.boschrexroth.com
Artikel-Authentizität Original product
Artikelzustand New