Autowellix Autoparts
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A power steering hose is a critical component in vehicle hydraulic steering systems, designed to transport pressurized hydraulic fluid between the power steering pump, steering gear/rack, and reservoir. These flexible yet durable hoses withstand continuous exposure to high pressures (typically 150-1,500 PSI) and extreme temperature fluctuations (-40°F to +300°F).
Two primary types exist:
1. High-Pressure Supply Hoses - Connect the pump to the steering gear, handling peak system pressures.
2. Low-Pressure Return Hoses - Direct excess fluid back to the reservoir under minimal pressure.
| Parameter Name | Description / Value | Remark |
|---|---|---|
| Material structure | Inner: NBR/HNBR; Reinforcement: High strength fiber/wire; Cover: Polyurethane | High temp & corrosion resistance |
| Inside diameter (ID) | 8 mm, 10 mm, 12 mm | Select by vehicle type |
| Working pressure | 10 MPa ~ 20 MPa | Peak can reach 30MPa |
| Temperature range | -40°C ~ +120°C | Short-time tolerance 135°C |
| Compatible fluid | ATF (Transmission oil), PSF (Steering oil) | Dexron or ISO 7308 standards |
| Life cycle | ≥5 million pulse tests | Simulate 10 years of service |
