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Oil leakage of shock absorber
Release time:
2023-02-03
In order to achieve the function of the shock absorber itself
In order to achieve the function of the shock absorber itself, the shock absorber itself is designed on the surface of the piston rod with a small thickness of the oil film. These oil films will be scraped off by the dust lip on the oil seal of the shock absorber during the compression of the shock absorber. At the same time, a very small amount of oil will accumulate on the upper part of the oil seal. Because this oil has high permeability, The oil accumulated in the upper part of the oil seal will begin to spread from the upper part of the shock absorber to the lower part, forming a thin oil film, which makes everyone mistakenly think that this situation is oil leakage. In fact, this situation does not affect the use.
Oil film: a key factor affecting the durability and lubrication of the oil seal, the formation and scraping of the oil film, the formation of the oil film when the piston rod is extended, when the piston rod is pressed in, the oil film will remain outside the oil seal when it is scraped by the dust lip of the oil seal. In order to enable the distribution service providers to correctly understand the principle that the shock absorber will naturally form an oil film during normal work, and to give users a correct explanation. The oil leakage mechanism of shock absorber is described as follows:
Shock absorber oil leakage: Because there are micro cracks on the surface of the piston rod coating, the micro cracks on the piston rod store a certain amount of damping oil to form an oil film, so that the friction between the piston rod and the oil seal is wet friction, thereby improving the shock absorber The shock absorption performance greatly extends the service life of the shock absorber. A small amount of oil leakage is a normal phenomenon. The formation of the oil film is a special design to ensure the function of the shock absorber and extend the service life of the shock absorber. Generally, the oil mark of oil leakage does not exceed the spring disc, and the oil mark is limited to the spring disc where the shock absorber oil seal is normal. Oil leakage cannot be regarded as oil leakage. The loss of oil leakage has been considered in the design of adding oil to the general shock absorber. When the shock absorber is produced, the oil quantity has been filled according to the standard. When the normal loss of oil quantity during use does not exceed 25ml, the shock absorber will not be abnormal. The results of bench durability test on the shock absorber show that oil leakage will not occur even if the shock absorber travels for 200000 kilometers. After the test, the performance of the shock absorber with a 5-20ml reduction in decomposition oil quantity meets the use requirements.
Specializing in the production of various types of automotive bearings and shock absorber accessories
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