High-pressure fluid transmission: The pressurized high-pressure hydraulic fluid (usually up to 10-15MPa) from the power steering pump is delivered to the steering gear (e.g. rack and pinion, recirculating ball steering gear), and the pressure difference of the fluid pushes the internal parts of the steering gear into motion, thus alleviating the steering effort of the driver.
Pressure Stability Guarantee: It needs to withstand the continuous impact of high-pressure fluid, and at the same time reduce the pressure fluctuation to ensure the steering power is even and free of stuttering, and enhance the driving feel.
|
Vehicle OE code |
Applicable Models |
|
444100E021 |
GSU35 0601 |
|
444100G010 |
TOYOTA |
|
444100G011 |
GRJ120 |
|
444100G020 |
TOYOTA |


High Pressure Resistance: It is necessary to withstand hydraulic pressure over 10MPa (some models can reach 20MPa) for a long period of time, and the instantaneous pressure peak may be even higher, so the strength of the reinforcing layer is key.
Temperature resistance: the engine compartment environment temperature is high (usually - 40 ℃ to 120 ℃), the oil pipe material needs to maintain elasticity and sealing in a wide range of temperatures, to avoid low-temperature embrittlement and high-temperature softening.
Vibration and fatigue resistance: the vibration of the vehicle driving will lead to repeated bending and stretching of the oil pipe, need to have good flexibility and fatigue resistance to prevent long-term vibration fracture.
Corrosion resistance: the need to resist chemical erosion of hydraulic oil (such as ATF oil), as well as external dust, water, salt corrosion.
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