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A power unit without a separate pilot pump feeds pilot oil internally and returns it straight to tank. That is how this valve is built, with spool symbol W6, 220 l/min nominal flow and a 4...20 mA command in size 25 at 350 bar operating pressure.
Proportional Directional Valve 4WRKE25W6-220L-3X/6EG24EK31/F1D3M - Bosch Rexroth R901041291
BOSCH REXROTH
Original product
Net price (excl. VAT)
€5,249.30
Item
BRR-R901041291
Manufacturer no.
R901041291
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R901041291
Country of originGermany
ConditionNew
Artikel
BRR-R901041291
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Not every installation carries a dedicated pilot pump, yet almost every one has back pressure in its tank line. The 4WRKE25W6-220L-3X/6EG24EK31/F1D3M therefore draws pilot oil internally and routes the pilot return externally, commanded by 4...20 mA to 220 l/min nominal flow.
Key benefits
- Internal pilot oil supply saves the second pump, the external return bypasses back pressure in the tank line.
- 220 l/min nominal flow at 350 bar maximum operating pressure, size 25 to ISO 4401-08-08-0-05.
- Spool symbol W6 with 3 switching positions and 4 ports, linear characteristic curve.
- A 4...20 mA current command feeds the on-board electronics, supplied with 24 VDC via a 7-pole connector (6 + PE).
- Internal spool position feedback, NBR seals for HL hydraulic fluid, 18.02 kg weight.
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 W6 |
| 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 | 18.02 kg |
Applications
Hoists, hydraulic presses and machine tools whose power unit runs a single circuit are the usual home for this valve. Maximum flow of 870 l/min leaves headroom for short rapid strokes. Routing the pilot return separately keeps pilot control clear of back pressure from the shared tank channel.
Manufacturer
Bosch Rexroth, material number R901041291. The type code 4WRKE25W6-220L-3X/6EG24EK31/F1D3M reads as size 25, spool symbol W6, 220 l/min nominal flow and series 3X.
| Hersteller-Nr | R901041291 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 18.020000 |
| 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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