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A cylinder that has to stay in place during a fault needs a blocked mid position. Symbol E on this 4WRKE25 closes P, A and B while 220 l/min nominal flow is metered from a 4...20 mA command value. Operating pressure reaches 350 bar and the valve weighs 17.96 kg.
Proportional Directional Valve 4WRKE25E220P-3X/6EG24ETK31/F1D3M - Bosch Rexroth R901406278
BOSCH REXROTH
Original product
Net price (excl. VAT)
€5,473.20
Item
BRR-R901406278
Manufacturer no.
R901406278
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R901406278
Country of originGermany
Customs tariff number84812010
ConditionNew
Artikel
BRR-R901406278
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Symbol E blocks in mid position, so a load stands still even without a signal. This pilot-operated proportional directional valve in size 25 meters 220 l/min nominal flow from a 4...20 mA current command value and handles operating pressures up to 350 bar.
Advantages
- Symbol E isolates cylinder and pump from each other in mid position
- Nominal flow 220 l/min, up to 870 l/min maximum flow across four ports
- Linear characteristic curve with a fine control range around zero
- Command value 4...20 mA, tolerant of voltage drop on long cables
- Internal pilot oil supply and internal return, no extra pilot lines to route
- Connection diagram ISO 4401-08-08-0-05, 17.96 kg, NBR seals for HL hydraulic 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 | 220 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 E |
| 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 | 17.96 kg |
Applications
Used in presses, foundry equipment and large test rigs where an axis runs under a higher-level position control loop. The fine control range helps when heavy masses are started slowly. The on-board electronics take 24 VDC through a 7-pole connector.
Manufacturer
Bosch Rexroth, material number R901406278. The full type designation is 4WRKE25E220P-3X/6EG24ETK31/F1D3M.
| Weight | 17.960000 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Hersteller-Nr | R901406278 |
| 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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