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Circulating High-Temperature Fan Shaft Bearings Position Wear Situation

wallpapers News 2020-04-17

1. Due to the simultaneous wear of the bearing position and the bearings seat of the enterprise fan shaft, the vibration of the drive side of the fan is seriously exceeded, which leads to the equipment's shutdown control again. The enterprise's fan has experienced two shutdowns yet after the vibration, the first time is The vibration value, and temperature of the inner ring of the bearing began to rise, the bearings was damaged, and the machine was shut down to replace the new bearings. The second time was more serious. After the first replacement of the bearings, the bearings position was not repaired, but the lock nut was used after the bearing was installed. It was fixed and locked, and the temperature of the bearings rose sharply after the company started operation in March, and the vibration became larger and larger, but it was helpless to shut it down.

2. Use the bearings bracket to lift the shaft, and use the dial indicator to beat the outer circle of the rod to 0.15mm. Therefore, it is concluded that due to the high speed of up to 1000r / min, the instantaneous high heat causes the shaft to deform thermally and the rod bends.

3. The regular operation of the bearings is reflected in two aspects. One is the degree of interference between the inner ring of the bearing and the shaft, that is, the amount of interference. The other is that the axial movement only occurs when axial movement does not happen. The inner ring of the bearing It is always fixed in a fixed position to ensure the regular operation of the bearings. To fundamentally solve such equipment problems, it is necessary to restore the journal size to the original shaft diameter size.

4. The regular operation of the bearings is reflected in two aspects. One is the degree of interference between the inner ring of the bearing and the shaft, that is, the amount of interference. The other issue is that the axial movement only occurs when axial movement does not happen. The inner ring of the bearing It is always fixed in a fixed position to ensure the regular operation of the bearing. To fundamentally solve such equipment problems, it is necessary to restore the journal size to the original shaft diameter size.


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