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Hydraulic motors and through-rod cylinders need a spool that opens equally in both flow directions. Spool symbol W8 provides that here at 350 l/min nominal flow and 350 bar. The pilot stage is supplied and relieved externally, and the command arrives as plus or minus 10 V.
Proportional Directional Valve 4WRTE25W8-350P-4X/6EG24K31/A1M - Bosch Rexroth R901180189
BOSCH REXROTH
Original product
Net price (excl. VAT)
€6,288.31
Item
BRR-R901180189
Manufacturer no.
R901180189
Personal expert advice
Brand new
Specialist dealer since 2009
Original product
Worldwide shipping
Product data
Manufacturer no.R901180189
Country of originGermany
ConditionNew
Artikel
BRR-R901180189
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Hydraulic motors and through-rod cylinders need a spool that frees the same cross section in both flow directions. Spool symbol W8 in the 4WRTE25W8-350P-4X/6EG24K31/A1M does that at 350 l/min nominal flow and operating pressures up to 350 bar.
Benefits
- Spool symbol W8 opens equally both ways, which matches motors and through-rod cylinders.
- 350 l/min nominal flow with 3 switching positions and internal spool position feedback.
- External pilot oil supply and external return keep pilot pressure clear of working pressure.
- Plus or minus 10 V command into on-board electronics, 24 VDC at a 7-pole connector (6 + PE) to EN 175201-804.
- Mounting pattern ISO 4401-08-08-0-05, NBR seals for HL fluid, 18 kg.
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 | 350 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 | 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 kg |
Applications
The valve drives rotary units on reels, mixers and travel gear as well as cylinders with a continuous piston rod. A symmetrical spool prevents speed jumps when direction reverses. For the pilot circuit a separate supply of stable pressure is assumed.
Manufacturer
Bosch Rexroth, material number R901180189. The type code 4WRTE25W8-350P-4X/6EG24K31/A1M states size 25, spool symbol W8, 350 l/min nominal flow and component series 4X.
| Hersteller-Nr | R901180189 |
|---|---|
| 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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