Rotary shaft oil seals leakage reason

Rotary shaft oil seals leakage reason:
1, poor skeleton oil seal, resulting in early leakage
2, poor assembly, resulting in leakage
3, lip wear
4, poor compatibility between the oil seal and the working medium, lip soft, swelling or hardening, cracking
5, rubber aging
Reasonable use of rotary shaft oil seals, should pay attention to the following:
(1) shaft speed due to design and structure reasons, high speed shaft should use high-speed oil seal, low speed shaft use low speed oil seal, low speed oil seal can not be used on the high-speed shaft, or vice versa.
(2) ambient temperature in the case of high temperature, should choose polypropylene ester or silicon, fluorine, silicon fluorine rubber.Efforts should also be made to reduce the oil temperature in the tank.Cold - resistant rubber should be used when the temperature is too low.
(3) the rotary shaft oil seals with general pressure is poor in bearing pressure, and the oil seal will be deformed when the pressure is too large.Pressure bearing ring or reinforced oil seal should be used in the case of excessive pressure.
(4) the degree of eccentricity on the installation. If the eccentricity is too large when the rotary shaft oil seals and the shaft cooperate, the sealing will become worse, especially when the shaft speed is high.If the eccentricity is too large, can use the "W" section of the rotary shaft oil seals.
(5) the surface finish of the shaft directly affects the service life of the rotary shaft oil seals, that is, the shaft finish is high, the service life of the oil seal will be long.
(6) note that there should be a certain amount of lubricating oil in the lip of the oil seal.
(7) special attention should be paid to prevent dust from immersing in the oil seal.
If you need rotary shaft oil seals or need any other bearings, please also contact me!
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