Selection Of Hydraulic Hoses


Hydraulic hose is an important connecting piece in hydraulic systems and equipment. It can withstand high pressure and is easy to disassemble, so it is widely used in the hydraulic industry. The correct selection of hydraulic hoses can ensure the safe operation of the entire hydraulic system, rationally arrange the space, and better control costs.

When selecting hydraulic hoses, pay attention to the following points:

1. Select the number of steel wire layers of the hose according to the pressure of the system. Generally speaking, the higher the pressure, the more steel wire layers are required. Each type of hose has a maximum working pressure, and the burst pressure of the hose is 4 times the maximum working pressure. The higher the pressure resistance of the hose, the higher the price. Therefore, according to the actual system pressure, the maximum working pressure of the hose can be slightly higher than the actual working pressure.

2. Select the inner diameter of the hose according to the flow rate. If the diameter is too small, it will increase the flow rate of the medium in the hose, cause the system to heat up, reduce work efficiency, and affect the performance of the entire system, so the inner diameter of the hose must be appropriate. When the hose is fixed with a hose clamp or the hose passes through a spacer such as a steel plate, pay attention to the outer diameter of the hose.

3. When selecting a high-pressure hose, you should pay attention to the bending radius of the high-pressure hose. When calculating the bending radius, you should subtract the withholding length of the previous joint. If the bending radius of the installed hose is too small, the pressure-bearing capacity of the hose will be reduced and its service life will be affected.

4. Select appropriate joints according to hydraulic requirements, such as SAE flange joints, male joints or female joints, joint angles such as 90 degrees, 45 degrees, and hose assembly angles.


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