Seal of the bearing itself

Source: China Bearing Network Time: 2013-06-30

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The additional sealing device supported by the bearing can effectively avoid foreign object aggression; however, this additional sealing device will increase the axial dimension of the structure; it is inconvenient for bearing operation and device repair; together, its sealing function is also affected by the shaft diameter and The machining accuracy of the shell-like part and the influence of the public position of the row. The sealed bearing can not only have an outstanding sealing and smooth environment, but also can deal with the problem of the bearing part; together, it can also eliminate the messy smooth system. The parts with compact layout and strict sealing requirements are all recommended to use sealed bearings. In addition to excellent dustproof and sealing functions, the bearings themselves can maintain excellent working conditions without replenishing the smoothing agent during the working process of the bearing; Repair costs.
The bearing's own seal is divided into touch and non-touch seals according to the layout. According to the touch method, it can be divided into radial seal and axial seal. According to the structure of the seal ring, it can be divided into single lip seal and double lip seal. Non-touch type Seals usually have two kinds of dust caps and rubber seals. The dust caps have large sealing gaps; they are only suitable for dustproof; rubber seals seal the gap. Salary shrimps are used. Touch seal bearings usually only need rubber seals. Extremely auxiliary parts. The rubber seal lip is a touch with a certain fit force and the bearing rotation part; then it plays an outstanding dust seal; but its limit speed is lower and the conflict torque is larger.

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