Product Overview
The DANFOSS OSPBX 400 LS (Part Number: 150-1085) is a high-performance hydrostatic steering unit engineered for precise directional control in heavy-duty mobile and industrial hydraulic systems. Operating on a closed-center, load-sensing (LS) principle, this unit functions as a rotary spool valve integrated with a metering gear set, delivering proportional steering flow in direct response to operator input at the steering wheel. The OSPBX series is a compact, non-reaction steering valve designed to interface seamlessly with load-sensing pump systems, ensuring energy-efficient operation by supplying flow only when steering demand exists. With a nominal displacement of 400 cm³/rev, this unit is suited for large vehicles and machinery requiring high steering torque capacity and smooth, responsive directional control.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve — Standard Directional Control Valve (Hydrostatic Steering Unit) |
| Model Designation | OSP BX 400 LS / 150-1085 |
| Manufacturer | Danfoss |
| Displacement | 400 cm³/rev nominal |
| Control Type | Load-Sensing (LS), Closed-Center, Non-Reaction |
| Operating Pressure | Standard Industrial Grade (Up to 210 bar continuous, 250 bar intermittent) |
| Mounting & Connection | Standard ISO / Danfoss Interface — 4-port configuration (P, T, L, R) |
| Steering Column Interface | Standard tapered shaft with keyway |
Engineering Features & Advantages
- Precision Metering Performance: The integrated rotary spool and metering gear set delivers proportional flow output directly correlated to steering wheel rotation, ensuring precise directional control and operator feedback.
- Load-Sensing Efficiency: The LS signal port communicates system demand to the pump, enabling on-demand flow delivery that reduces parasitic power loss and heat generation in the hydraulic circuit.
- Non-Reaction Design: External steering forces are isolated from the steering wheel, minimizing operator fatigue and improving safety during prolonged operation on uneven terrain.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened spool and gear components rated for high-cycle directional control duty.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM Danfoss OSPBX series specifications, ensuring drop-in installation without modification.
Typical Industrial Applications
This Danfoss OSPBX 400 LS steering unit is commonly deployed in heavy mobile hydraulic systems including agricultural tractors and combine harvesters, construction equipment such as wheel loaders and articulated dump trucks, forestry machinery, and specialized industrial vehicles requiring high-capacity hydrostatic steering with load-sensing pump integration. It is also suitable for marine steering systems and material handling equipment where precise directional control under varying load
PRODUCT IMAGES
DANFOSS OSPBX 400 LS / 150-1085 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 400 LS / 150-1085 Hydraulic Steering Valve. This Denmark-made hydraulic component features a load-sensing design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.