1. Poor lubrication, improper material selection, poor machining, assembly and installation accuracy will lead to early wear and increase the gap and leakage.

 

2 hydraulic components are also widely used in the sealing of seals, such as seal materials, physical and chemical instability, low mechanical strength, elasticity and wear resistance, etc., are due to poor sealing effect and leakage.

 

3. The groove size design of the installation seals is not reasonable, which will also cause leakage.

 

4. Large surface roughness value of joint surface, poor flatness, deformation under pressure and uneven fastening force cause leakage.

 

5. Component oil leakage, leakage caused by poor return pipeline.

 

6. If the oil temperature is too high, the viscosity of the oil drops or the selected oil viscosity is too small, resulting in leakage.

 

7. The system pressure is set too high, and the sealing pre-compression is too small, which will cause leakage.

 

8. Defects in the shell of hydraulic parts casting will also lead to increased leakage.

 

Because there are so many causes of hydraulic system leakage, when we have a problem, we should first find out the cause and then take corresponding measures.