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The thrust cylinders of a tunnel boring machine have to push together and evenly. This valve meters 350 l/min rated flow at up to 350 bar with spool symbol W6 and a 4...20 mA command signal. Internal piston position feedback, 17.96 kg.
Proportional Directional Valve 4WRKE25W6-350L-3X/6EG24K31/F1D3V - Bosch Rexroth R901157446
BOSCH REXROTH
Original product
Net price (excl. VAT)
€5,283.17
Item
BRR-R901157446
Manufacturer no.
R901157446
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R901157446
Country of originGermany
ConditionNew
Artikel
BRR-R901157446
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When several cylinders advance a machine together, the evenness of each axis decides the alignment. The 4WRKE25W6-350L-3X/6EG24K31/F1D3V supplies 350 l/min rated flow at 350 bar maximum and holds the spool through internal feedback.
Benefits
- Internal piston position feedback and a linear characteristic, so parallel axes react alike.
- 350 l/min rated flow, flow up to 870 l/min, operating limit 350 bar.
- Spool symbol W6 blocks at centre and holds the cylinder without actuation.
- External pilot oil supply and external pilot oil return, size 25 to ISO 4401-08-08-0-05.
- Current command value 4...20 mA, 24 VDC supply, 17.96 kg, FKM seals for HL fluid.
Technical data
| Connection diagram | ISO 4401-08-08-0-05 |
| Max. flow | 870 l/min |
| Product family | 4WRKE |
| 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 W6 |
| 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 | 17.96 kg |
Application
Thrust and bracing cylinders in tunnelling and special foundation work, plus heavy lifting axes in plant construction, are the field of use. The current command signal stays free of interference even over the long cable runs of a drive. For a voltage signal and for spool symbol E the series carries separate material numbers.
Manufacturer
Bosch Rexroth, material number R901157446.
| Hersteller-Nr | R901157446 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 17.960000 |
| 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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