Minimum Bending Radius Requirements for Hydraulic Hoses

1, the minimum bending radius of the hydraulic hose is generally 50 mm, and the rubber hose can also be made of other materials.

The bending radius requirements have three aspects: 

First, the hose must have enough strength and elasticity to withstand pressure, and cannot be affected by other factors, such as heat, impact, high temperature, chemical solvents and other substances. 

Secondly, there can be no bubbles, otherwise it will damage the performance of the hose, and even cause damage, affecting normal work. 

Third, in the installation of the hose, the hose must be in a horizontal state, and the pipe must be firmly supported and fixed on the wall. If the bending radius is too large, it is easy to damage the hose, so that it can not withstand normal working pressure and vibration. If the requirements are too high, it should be properly adjusted to prevent the hose from breaking and damaging the hose. This is because the minimum bending radius of the hose should be taken into account in the design stage.

2, according to the different hydraulic system, the working pressure of the hydraulic hose is also limited.

When the pressure of the pump does not exceed 20MPa, the working pressure of the hose is 10MPa. That's a big number. Therefore, the higher the pressure, the longer the life of the hose, the longer the service life. The higher the pressure, the smaller the minimum bending radius of the rubber tube. Therefore, in the selection of tire pressure timing can not be ignored the working pressure of the hose should meet the following requirements:

(1) The maximum pressure of the hydraulic hose should not exceed the normal working pressure of the hydraulic system;

(2) Choose oil and pressure resistant rubber sealing materials as far as possible;

(3) The service life of the hose can not exceed the design service life.

3, due to the different pressure levels of the hose, its minimum bending radius will be different.

But in general, the minimum bending radius we use should be greater than the specified standard. This rubber tube can also be classified according to pressure level. General rubber pipes can be divided into A, B, C, D, E, F and other five pressure levels. Among them, the E-grade rubber hose must be used in the range of 100-150MPa, while the D-grade rubber hose can be used in the range of 120-140MPa. Therefore, different pressure grades of rubber tubes, the minimum bending radius is not the same. Therefore, we should choose according to their own needs when buying hydraulic hose.

4, according to the different hydraulic system, the minimum bending radius of the hose will be different.