There are many factors that affect the use of the hose assembly. Only by properly selecting the hose and the joint according to the working conditions can the reliability and economy of the hose be guaranteed. These factors are:
Hose size
The inner diameter of the hose must be appropriate. If the diameter of the hose is too small, it will increase the flow rate of the medium in the pipeline, which will cause the system to generate heat and reduce efficiency. When passing spacers such as steel plates, pay attention to the outer diameter of the hose.
Working pressure
The dynamic pressure of the general hose refers to the highest pressure allowed by the hose during continuous operation. According to the safety coefficient of hydraulic hoses specified in relevant international standards, the generally recommended working pressure is usually a quarter of the minimum burst pressure of the hose.
Impact pressure and fatigue life
The choice of rubber hose is determined based on the highest pressure value of the hydraulic system design. Because the pressure value of the hydraulic system is usually dynamic, and sometimes there is an impact pressure, the peak value of the impact pressure will be much higher than the maximum pressure value of the system. However, there are generally relief valves on the system, so the impact pressure will not seriously affect the fatigue life of the hose. For hydraulic systems with particularly frequent shock pressures, it is recommended to use hose products that are particularly resistant to pulsation.
  temperature range
The user should use the hose within the temperature range allowed by the hose quality specification. If the working environment temperature exceeds this range, the life of the hose will be affected, and its pressure capacity will be greatly reduced. For systems where the ambient temperature is too high or too low for a long period of time, hose sheathing is recommended.
Chemical compatibility
If special hydraulic medium is used, the user should ensure that the hose assembly used is compatible with the medium, its inner and outer layers, joints and O-rings.
Bend radius
Bend radius
Bend radius
Meaning: As shown on the right, R is the (minimum) radius of the inner circle that the hose can bend without damaging or shortening the service life.
For a hose, the R value is constant. If the bending radius is less than the R value during use, the hose with the textile reinforcement layer is likely to be kinked. It is better to use a hose with a spiral wire.