Product Overview
The BOSCH 0 811 404 770 proportional directional valve, designated 50SJ-2X/G24K0/A1M, is a high-response, pilot-operated proportional directional control valve engineered for precise electro-hydraulic motion control in demanding industrial systems. This valve regulates both the direction and the magnitude of hydraulic flow in proportion to an electrical input signal, enabling smooth, infinitely variable control of actuator velocity and position. Featuring a robust spool-in-sleeve design with integrated position feedback, the 50SJ-2X series delivers exceptional metering accuracy, minimal hysteresis, and fast dynamic response. With a 24 VDC (G24) solenoid actuation and a spring-centered, fail-safe neutral position, this valve is a direct-fit solution for closed-loop and open-loop control architectures in high-cycle industrial machinery.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Directional Valve (Pilot-Operated, Spool Type) |
| Model Designation | 0 811 404 770 / 50SJ-2X/G24K0/A1M |
| Actuation Type | Proportional Solenoid, 24 VDC (G24) |
| Spool Configuration | 4-Way, 3-Position, Spring-Centered Neutral |
| Operating Pressure | Standard Industrial Grade (Up to 315 bar rated) |
| Nominal Flow Rate | Size 50 (up to 500 L/min at 10 bar Δp) |
| Control Signal | Analog ±10 V / 4–20 mA (via amplifier card) |
| Hysteresis | ≤ 1% of nominal stroke |
| Mounting & Connection | ISO 4401 / CETOP Subplate Interface |
| Seal Material | NBR / FKM (mineral oil & HFC compatible) |
Engineering Features & Advantages
- Precision Proportional Metering: The spool-in-sleeve architecture with integrated position feedback delivers highly linear flow-to-signal characteristics, enabling accurate velocity and position control of hydraulic actuators with minimal dead band and hysteresis.
- Fast Dynamic Response: Optimized pilot stage and low-inertia solenoid design provide rapid response times, making the valve suitable for high-cycle closed-loop position, velocity, and force control applications.
- Industrial Reliability: Constructed for continuous duty with durable, corrosion-resistant materials and proven engineering for maximum system uptime.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original BOSCH OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
With a 24 VDC (G24) solenoid actuation and a spring-centered, fail-safe neutral position, this valve is a direct-fit solution for closed-loop and open-loop control architectures in high-cycle industrial machinery.
PRODUCT IMAGES
BOSCH 0 811 404 770 / 50SJ-2X/G24K0/A1M Proportional Directional 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 genuine BOSCH 0 811 404 770 / 50SJ-2X/G24K0/A1M Solenoid Directional Spool Valve. This German-made 24V DC hydraulic component features a robust spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.