The REXROTH HY6RSJ-B / R900928618 is a heavy-duty industrial directional spool valve engineered for precise control of hydraulic fluid flow direction, pressure, and flow rate in demanding hydraulic systems. Designed for manifold mounting per ISO 4401 / CETOP standards, this valve ensures reliable operation and long service life in high-pressure applications.
REXROTH HY6RSJ-B / R900928618 Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Type | Directional Spool Valve, 4-way, 3-position |
| Actuation | Solenoid operated, spring return |
| Nominal Flow Rate | Up to 60 L/min |
| Maximum Operating Pressure | 350 bar (port P, A, B); 210 bar (port T) |
| Spool Type | Closed center, positive overlap |
| Mounting Standard | ISO 4401-03 / CETOP 3 / NG6 |
| Hydraulic Fluid | Mineral oil based, viscosity 10–500 mm²/s |
| Fluid Temperature Range | -20 °C to +80 °C |
| Electrical Connection | DIN EN 175301-803 (plug-in connector) |
| Protection Class | IP65 (with mating connector) |
| Seal Material | NBR (nitrile rubber) |
| Housing Material | Cast iron / steel |
Key Engineering Features
- Precise spool design ensures minimal internal leakage and accurate flow control.
- Robust solenoid actuation with manual override for emergency operation.
- High-pressure capability up to 350 bar for demanding hydraulic circuits.
- Standard ISO 4401-03 mounting pattern for easy integration into manifold systems.
- Durable construction with NBR seals for compatibility with mineral-based hydraulic fluids.
- Spring return ensures fail-safe spool positioning upon de-energization.
Industrial Applications
- Machine tools and CNC equipment hydraulic control circuits.
- Industrial automation and robotic systems requiring precise directional control.
- Presses, injection molding machines, and forming equipment.
- Material handling and lifting equipment hydraulic manifolds.
- Mobile and stationary hydraulic power units.
For technical inquiries, dimensional drawings, or replacement support for REXROTH HY6RSJ-B / R900928618, contact the Pro-Hydraulic engineering team.
PRODUCT IMAGES

REXROTH HY6RSJ-B / R900928618 Directional Spool Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the REXROTH HY6RSJ-B / R900928618 Directional Spool Valve. This precision-engineered hydraulic component delivers reliable performance and accurate flow control for demanding industrial systems.