Precautions and safety measures for hydraulic hose

1. The bending radius of the rubber hose should not be too small, and should generally not be less than the value specified in the Technical Characteristics of Hydraulic Hose Assemblies. The connection between the rubber hose assembly and the pipe joint should have a straight section, and the length of this section should not be less than twice the outer diameter of the pipe.

2. The length of the rubber hose assembly should take into account that the length of the hose will undergo shrinkage deformation after being filled with pressure oil, with a general shrinkage amount of 3-4% of the pipe length. Therefore, when installing the rubber hose assembly, it is not allowed to be in a tensioned state.

3. The rubber hose assembly should be installed without torsional deformation. The joint axis of the rubber hose should be placed as much as possible in the moving plane to avoid damage to the hose when both ends move together.

4. The rubber hose should avoid contact and friction with sharp corners on the machinery to avoid damage to the hose.


Safety measures: To ensure the safe and reliable use of the hose assembly, special attention should be paid to the following matters.

1. Pressure: The specified working pressure of the hose should generally not be less than the maximum system pressure, and only in infrequent use can it be increased by 20%; For those who use it frequently and frequently bend, it should be reduced by 40%. If the impact pressure of the system is higher than the specified working pressure of the hose, it not only reduces the service life of the hydraulic hose, but also may cause personal and equipment accidents.

2. Temperature: The fluid temperature and ambient temperature, whether stable or instantaneous, must not exceed the temperature resistance limit of the hose. If the temperature is lower or higher than the recommended temperature of the hose, it can reduce the performance of the hose, cause damage to the hose, and thus cause leakage.

3. Fluid compatibility: The fluid in the hose should comply with the regulations specified in the "Purpose" section of the product sample. If used beyond the regulations, the service life and safety of the hose cannot be guaranteed.

4. Appropriate end connection: Nut connection is widely used due to its convenience and low cost. However, in cases of high vibration, it is necessary to fully consider the issue of nut loosening and adopt flange connection. [1]