Floating labyrinth oil seal in the bearing housing

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Labyrinth seal between the shaft and the housing, with a plurality of successively arranged small clearance bump annular seal teeth combinations, the series throttle clearance and the expansion cavity is formed between the seal teeth and the shaft, the lubricant splash each through a sealed tooth, is bound to encounter a lot of resistance, resulting in throttle effect, diminishing the speed of the lubricant, lubricant down the inside of the seal teeth weakened flowing to the lower part of the ring cavity, and then to return to the bearing indoor return hole of the lower portion of the annular cavity, to prevent lubricant leakage. Usually common labyrinth seal radial seal, the axial seal, floating seal and composite seal type, such structures are especially suited to prevent the high speed shaft of lubricant leakage.precision bearings

Can be envisaged, if the number of seal teeth enough, then regardless of the lubricant splash speed how fast, can be done by the effect of a completely sealed, but in fact, the purpose of sealing Teeth increases, so that the axial dimension is increased, therefore, excessive to additional sealing teeth on the d evice is very difficult. In principle, required in order to improve the sealing effect of the labyrinth seal clearance of the seal teeth and shaft is smaller the better.roller bearing company

Oil leakage causes: the sealing labyrinth seal teeth badly worn or damaged; bearing chamber oil level is high; labyrinth seals with the shaft clearance is too large; Mifengbuyan oil seal on the back bearing chamber; installation, seal oil return hole location is incorrect, or blockage.