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Directional Spool Valve H-4WEH25R6X/6EG24N9S2K4 - Bosch Rexroth R978027961
When pilot oil comes from a separate circuit and drains separately, the main circuit stays independent of the pilot pressure. The H-4WEH25R6X/6EG24N9S2K4 uses an external pilot oil supply with an external pilot oil return while switching 700 l/min.
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Description
Pilot-operated size 25 directional spool valve with spool symbol R that reverses 700 l/min and routes its pilot oil entirely externally.
Key benefits
- External pilot oil supply and external pilot oil return, independent of main circuit pressure
- Flow rate of 700 l/min at a maximum working pressure of 350 bar
- 3 switching positions to spool symbol R across 4 ports
- Weight of 18.8 kg, ISO 4401-08-08-0-05 connection diagram
- 3-pole connector (2 + PE) to EN 175301-803 for 24 V DC
Applications
This layout suits plants with a dedicated pilot pump, for instance in foundries, rolling mills and large test benches. NBR seals with HL hydraulic fluid match standard mineral oil operation. Size 25 subplate mounting keeps the piping outside the valve.
Manufacturer
Bosch Rexroth lists this valve under material number R978027961. We supply original manufacturer parts. Characteristic curves, installation dimensions and tightening torques are given in data sheet RE 24751 and RE 07600-B.
Technical data
| Connection diagram | ISO 4401-08-08-0-05 |
|---|---|
| Max. flow | 700 l/min |
| Product family | H-4W.H.. |
| Type of connection | Subplate mounting |
| Supply voltage | 24 VDC |
| Number of switching positions | 3 |
| Hydraulic fluid | HL |
| Number of ports | 4 |
| Electrical connection description | Connector 3-pole (2 + PE) according to EN 175301-803 |
| Spool symbol | Symbol R |
| Operating pressure, max. | 350 bar |
| Size | 25 |
| Seals | NBR |
| Electrical connector | Connector, 3-pole (2 + PE) |
| Type of actuation | with solenoid actuation |
| Weight | 18.8 kg |
| Manufacturer | Bosch Rexroth |
| Hersteller-Nr | R978027961 |
| Zolltarifnummer | 84812010 |
| GPSR Herstellerdaten | Bosch Rexroth AG, Zum Eisengießer 1, DE-97816 Lohr am Main, www.boschrexroth.com |
| Artikelzustand | New |
| Artikel-Authentizität | Original product |
| Country of Manufacture | Germany |
Downloads
Datasheet
- Datasheet (PDF)
- Directional spool valves, direct operated (RE 23178) EN
- Directional spool valves, pilot-operated (RE 24751) EN
- Proportional directional valve, pilot-operated (RE 29115) EN
- Proportional-Wegeventil, vorgesteuert, ohne elektrische Wegrückführung, mit oder ohne integrierter (RD 29115) DE
- Wege-Schieberventile, direktgesteuert, mit Magnetbetätigung DE
- Wege-Schieberventile, vorgesteuert, mit hydraulischer oder elektro-hydraulischer Betätigung (RD 24751) DE
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