Analysis of common problems of marine bearing bush
Time:
2022-07-28 11:14:19.376
1. During the cold start, if the heavy load is running, the oil is still at a low temperature and has not been lubricated to the marine bearing bush, but at this time, the surface of the marine bearing bush has formed an instantaneous high temperature due to the heavy load, causing the metals to burn and lock each other.
2. The matching clearance between the marine bearing bush and the journal is too large, and the oil film pressure is small; or the matching clearance between the marine bearing bush and the journal is too small, and the marine bearing bush bulges too high, the alloy at the bush mouth is deformed.
3. I do not understand the type of oil required for the operation of the marine bearing bush, and use various oil additives indiscriminately, which destroys the molecular structure in the machine, which causes the flow rate of the oil in the oil passage to be too slow and too thin, and reduces the lubrication function. The marine bearing is locked.
4. If the oil is not changed for a long time, the use of poor quality oil will also cause "burning of the bush and holding the shaft".
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