Product Overview
The DANFOSS OSPBX 315 LS (Part Number 150-1084) is a hydrostatic steering unit from the Danfoss OSPB series, engineered as a closed-center, load-sensing (LS) directional control valve assembly for heavy-duty industrial and mobile hydraulic steering systems. Operating on a rotary spool and sleeve metering principle, the unit converts low-torque steering wheel input into proportional hydraulic flow to the steering cylinder, while the integrated load-sensing port continuously transmits the highest system load pressure signal back to the priority valve or pump compensator. The “315” designation indicates a nominal displacement of 315 cm³/rev, delivering high flow capacity for large vehicles and equipment requiring substantial steering effort. The LS (Load Sensing) configuration ensures that pump output is matched precisely to steering demand, minimizing parasitic power loss and heat generation in the hydraulic circuit. This unit functions strictly as a directional control valve and metering device, not as a pump, and is designed for direct integration into Danfoss OSPB-series steering columns and priority valve circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve — Standard Directional Control Valve (Hydrostatic Steering Unit) |
| Model Designation | DANFOSS OSPBX 315 LS / 150-1084 |
| Operating Pressure | Standard Industrial Grade (Up to 175 bar continuous / 210 bar intermittent) |
| Nominal Displacement | 315 cm³/rev |
| Control Type | Load Sensing (LS), Closed-Center, Non-Reaction |
| Mounting & Connection | Standard ISO / Danfoss OSPB Interface (4-port: P, T, L, R + LS signal port) |
| Spool Configuration | Rotary spool and sleeve, 6/4-way directional control |
| Filtration Requirement | ISO 4406 18/16/13 or better |
Engineering Features & Advantages
- Precision Load-Sensing Metering: The LS port continuously relays the highest load pressure signal to the priority valve, enabling the pump to deliver only the flow required for steering. This reduces energy consumption, minimizes oil heating, and improves overall system efficiency compared to fixed-displacement steering circuits.
- Proportional Rotary Spool Control: The rotary spool and sleeve design provides smooth, progressive flow metering proportional to steering wheel rotation, ensuring precise directional control and predictable vehicle response under all operating conditions.
- Non-Reaction Steering Behavior: The OSPBX configuration isolates external steering forces from the steering wheel, preventing kickback and reducing operator fatigue during prolonged operation on rough terrain or high-load applications.
- High Displacement Capacity: At 315 cm³/rev, this unit supports large steering cylinders and high-flow circuits typical of heavy mobile equipment, maintaining responsive steering even at low engine speeds.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
- Direct Fit Replacement: Precision-manufactured to original DANFOSS specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
The DANFOSS OSPBX 315 LS (Part Number 150-1084) is a hydrostatic steering unit from the Danfoss OSPB series, engineered as a closed-center, load-sensing (LS) directional control valve assembly for heavy-duty industrial and mobile hydraulic steering systems.
PRODUCT IMAGES
DANFOSS OSPBX 315 LS / 150-1084 Hydraulic Steering Unit
⚡ 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 DANFOSS OSPBX 315 LS / 150-1084 Load Sensing Steering Valve. This Denmark-made hydraulic component features a load-sensing design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.