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Around the centre position the resolution decides whether a load creeps or jerks. The internal position control of this 4WRTE keeps the opening stable there, at 220 l/min nominal flow and 350 bar. The pilot oil return is routed externally.
Proportional Directional Valve 4WRTE25W8-220L-4X/6EG24EK31/F1M - Bosch Rexroth R901005994
BOSCH REXROTH
Original product
Net price (excl. VAT)
€6,086.93
Item
BRR-R901005994
Manufacturer no.
R901005994
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R901005994
Country of originGermany
ConditionNew
Artikel
BRR-R901005994
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Around the centre position it becomes clear how finely a valve really works, because the load moves only a few millimetres per second there. Thanks to internal position control this 4WRTE keeps the opening stable in that range while providing 220 l/min nominal flow at 350 bar overall.
Benefits
- Internal position control stabilises the opening even at small commands near centre.
- 220 l/min nominal flow for the fast phase, up to 870 l/min maximum.
- Internal pilot supply with external return keeps the spring chamber free of pressure.
- Linear characteristic with a 4...20 mA current command and on-board electronics.
- 350 bar operating pressure, weight 18.1 kg, ISO 4401-08-08-0-05 connection diagram.
Technical data
| Connection diagram | ISO 4401-08-08-0-05 |
| Max. flow | 870 l/min |
| Product family | 4WRTE |
| 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 | Connector 7-pole (6 + PE) according to EN 175201-804 |
| Spool symbol | Symbol W8 |
| 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 | 18.1 kg |
Applications
The valve is used on axes with a gentle approach and heavy load, for example lifting tables, mould clamping units and testing machines with slow ramps. Three switching positions and four ports give the standard size 25 function. The operating medium is HL hydraulic fluid.
Manufacturer
Bosch Rexroth lists this product under material number R901005994.
| Hersteller-Nr | R901005994 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 18.100000 |
| 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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