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Position control of the main spool needs a defined pressure in the spring chamber, which an external pilot drain provides. This 4WRTE with spool symbol E1 uses it and controls 220 l/min nominal flow at 350 bar. Pilot oil itself is taken internally.
Proportional Directional Valve 4WRTE25E1-220L-4X/6EG24EK31/F1M - Bosch Rexroth R901098188
BOSCH REXROTH
Original product
Net price (excl. VAT)
€6,086.93
Item
BRR-R901098188
Manufacturer no.
R901098188
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R901098188
Country of originGermany
ConditionNew
Artikel
BRR-R901098188
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For the position control of the main spool to work cleanly, no varying back pressure may build up in the spring chamber. This version therefore drains pilot oil externally while taking it internally, and provides 220 l/min nominal flow at 350 bar.
Benefits
- External pilot drain keeps the spring chamber free of fluctuating tank back pressure.
- Internal pilot supply saves the feed line on the manifold.
- 220 l/min nominal flow, up to 870 l/min maximum, 350 bar operating pressure.
- Internal position control with a linear curve and 4...20 mA command.
- On-board electronics, 24 VDC supply, 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 E1 |
| 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 kg |
Applications
The version makes sense on systems with a shared return or a return filter, where tank pressure rises with the number of active consumers. Examples are hydraulic stations in plant engineering and press power units with several axes. The valve weighs 18 kg and runs on HL hydraulic fluid.
Manufacturer
Bosch Rexroth lists this product under material number R901098188.
| Hersteller-Nr | R901098188 |
|---|---|
| Manufacturer | Bosch Rexroth |
| Country of Manufacture | Germany |
| Weight | 18.000000 |
| 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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