Quality problems in fag bearing seal ring assembly

The seal ring of fag bearing is a common part in the bearing assembly structure.

The assembly quality of the seal ring will directly affect the sealing performance of the bearing or the service life of the bearing. Many damage degrees of fag bearings in use are related to the assembly quality of bearing sealing rings. What are the reasons for the common assembly quality problems of bearing sealing rings in our daily life? The small editor will share the relevant reasons and solutions based on the knowledge of bearing assembly. Generally, there are several reasons for the quality problems in the assembly process of bearing sealing ring:

① Sealing ring with rotation; fag bearing

② The sealing ring does not fit;

③ The sealing ring is easy to fall off;

④ The induced crack of bearing outer ring is too large;

⑤ The bearing inner ring is jammed;

⑥ The inner lip of the sealing ring will bite back when the bearing rotates and turns.

fag bearing

Bearing seal ring with rotation bearing seal ring with rotation refers to the relative movement of the seal ring in the radial direction during the rotation of the inner and outer rings of the bearing. Generally, the seal ring cannot rotate when it is installed in the seal groove. The main reason is that the size of the bearing seal ring flange is too small, and the interference between the inner lip of the seal ring and the outer spherical surface of the inner ring is greater than the interference between the seal ring flange and the outer ring seal groove step, that is, the friction between the seal ring and the step is less than the friction between the seal ring and the outer spherical surface. The solution is to increase the size of the bearing seal ring flange and increase the size of the inner lip of the seal ring on the premise of ensuring the assembly quality of the seal ring.

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