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In accumulator circuits system pressure swings widely and the pilot stage must not feel it. This size 25 version therefore takes pilot oil through X and returns it through Y. 220 l/min nominal flow, ±10 V command value, weight 18.06 kg.
Proportional Directional Valve 4WRKE25W8-220L-3X/6EG24K31/A1D3V - Bosch Rexroth R901305544
BOSCH REXROTH
Original product
Net price (excl. VAT)
€5,537.81
Item
BRR-R901305544
Manufacturer no.
R901305544
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R901305544
Country of originGermany
ConditionNew
Artikel
BRR-R901305544
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An accumulator circuit travels between charge and discharge pressure, and a valve should respond the same way across that band. This size 25 model separates the pilot stage completely through X and Y while metering 220 l/min nominal flow.
Benefits
- External pilot oil supply through X holds pilot pressure steady even as the accumulator discharges.
- External return through Y stops tank back pressure from shifting the null position.
- 220 l/min nominal flow, peak flow up to 870 l/min, operating pressure up to 350 bar.
- ±10 V command value at the on-board electronics, supply voltage 24 VDC.
- FKM seals, interface ISO 4401-08-08-0-05, weight 18.06 kg.
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 W8 |
| 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 | 18.06 kg |
Applications
Applications are accumulator circuits on presses, emergency lowering functions and systems with strongly varying demand. Because pilot pressure comes from its own source, the axis stays controllable as accumulator pressure falls. Both extra lines have to be planned into the subplate.
Manufacturer
Bosch Rexroth lists the valve as R901305544, product family 4WRKE, size 25.
| Hersteller-Nr | R901305544 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 18.060000 |
| 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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