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Where back pressure builds in the return line, pilot oil should take its own route. This version with a nominal flow of 85 l/min is supplied and drained externally and additionally carries a pressure reducing valve in the pilot stage.
Proportional Directional Valve 4WRZ10W6-85-7X/6EG24K4/D3M - Bosch Rexroth R900771949
BOSCH REXROTH
Original product
Net price (excl. VAT)
€2,549.33
Item
BRR-R900771949
Manufacturer no.
R900771949
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Brand new
Specialist dealer since 2009
Original product
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Product data
Manufacturer no.R900771949
Country of originGermany
Customs tariff number84812010
ConditionNew
Artikel
BRR-R900771949
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Filters and coolers in the return line create back pressure that can affect the pilot stage of a proportional valve. This size 10 valve avoids that with external pilot oil supply and external pilot oil return. The main spool works to symbol W6 at a nominal flow of 85 l/min.
Benefits
- External pilot oil supply and external pilot oil return, independent of return line pressure
- Pressure reducing valve in the pilot stage for constant pilot pressure
- Nominal flow 85 l/min, maximum flow 170 l/min
- Symbol W6 in 3 switching positions across 4 ports
- Operating pressure up to 315 bar, subplate mounting to ISO 4401-05-05-0-05
- NBR seals for HL hydraulic fluid, mass 8.16 kg
Technical data
| Connection diagram | ISO 4401-05-05-0-05 |
| Max. flow | 170 l/min |
| Product family | 4WRZ(E) |
| Type of connection | Subplate mounting |
| Nominal flow | 85 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 W6 |
| Operating pressure, max. | 315 bar |
| Size | 10 |
| Seals | NBR |
| Electrical connector | Connector, 3-pole (2 + PE) |
| Type of actuation | Electrical with external electronics |
| Weight | 8.16 kg |
Applications
The valve is used in systems with a long return line through coolers and filters, for instance in presses and large power units. Separate pilot oil routing keeps switching times predictable there.
Manufacturer
Bosch Rexroth lists this item of product family 4WRZ(E) under material number R900771949. Dimensional drawings, characteristic curves and installation notes are given in data sheet RE 29115, the series overview is RE 07600-B.
| Hersteller-Nr | R900771949 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 8.160000 |
| Zolltarifnummer | 84812010 |
| 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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