Help with blower
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What are the reasons why the main thrust bearing of a centrifugal blower burns out? I hope everyone can offer some suggestions for Shaanxi Blower products!
If the thrust face is burned, it means the axial force is too high, or the lubrication is poor. If the radial surface is burned, it may be due to high radial forces, poor lubrication, impurities, or fatigue. . . . . .
Poor lubrication or other issues – check whether there is any gelation of lubricant on the bearing surfaces.
What are some good ways to deal with high axial thrust?
There are no issues with the oil, and the thrust surface is also in good condition!
Regarding the problems with the thrust surface, the main suspicion is that the thrust is too high; other possible causes include excessive deflection of the thrust disc surface and issues with the thrust bearing surfaces. You can rule these out one by one following this line of thought, for reference only
As for the excessive axial thrust, the advice I found is to install balance pipes and valves; you can consider this based on your actual situation
Check the wobbling of the thrust disc to see if the shaft is bent. One of our startup fans developed a bent shaft due to long periods of disuse and failure to perform regular shaft rotation, which resulted in several times of bearing damage.
I’d like to reply to everyone together: thank you for all your suggestions; I’m extremely grateful! I work on the repair and maintenance of compressors. If you need my help in the future, feel free to contact me. Thank you all!
1. Check whether the design thrust bearing meets the usage requirements. 2. Inspect the thrust bearings in accordance with the maintenance technical requirements. 3. Check whether the balance disc is functioning properly. 4. Check whether the seals at all levels are in good condition.
1. Poor contact between the thrust pad and the thrust disc. 2. Excessively large sealing gap in the balance disc. 3. Excessively large labyrinth sealing gap