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On test rigs the pilot pressure usually comes from an accumulator circuit of its own. This valve is laid out for exactly that, taking pilot oil in externally and draining it externally, at 220 l/min nominal flow, spool symbol E, plus minus 10 V command and up to 350 bar.
Proportional Directional Valve 4WRKE25E220L-3X/6EG24K31/A1D3M - Bosch Rexroth R900777269
BOSCH REXROTH
Original product
Net price (excl. VAT)
€5,249.30
Item
BRR-R900777269
Manufacturer no.
R900777269
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R900777269
Country of originGermany
Customs tariff number84812010
ConditionNew
Artikel
BRR-R900777269
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A test rig runs its setpoints against a working pressure that changes constantly, and pilot pressure should stay untouched by it. The 4WRKE25E220L-3X/6EG24K31/A1D3M therefore draws all its pilot oil from an external circuit and meters 220 l/min nominal flow at 350 bar.
Key benefits
- External pilot oil supply and external return, pilot pressure does not follow working pressure.
- 220 l/min nominal flow in size 25, maximum flow 870 l/min.
- Plus minus 10 V command, 24 VDC supply, electronics integrated in the valve.
- Spool symbol E, 3 switching positions, 4 ports, connection pattern ISO 4401-08-08-0-05.
- Internal spool position feedback for a linear characteristic curve across the signal range.
- 17.94 kg weight, NBR seals for HL hydraulic fluid, 7-pole connector (6 + PE).
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 ±10 V |
| 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 | 17.94 kg |
Applications
The variant serves material and component test rigs as well as presses with a separate pilot circuit. Because pilot pressure stays constant, the step response does not change with load pressure. 220 l/min nominal flow is enough for test cylinders of medium piston area.
Manufacturer
Bosch Rexroth, material number R900777269. The type code 4WRKE25E220L-3X/6EG24K31/A1D3M states size 25, spool symbol E, 220 l/min nominal flow and series 3X.
| Weight | 17.940000 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Hersteller-Nr | R900777269 |
| 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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