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August 29, 2022
What are the reasons for the deterioration and loss of lithium-based grease and the blackening of extreme pressure lithium-based grease? Many people have doubts about this issue. Let us take a look today so that everyone can understand.
In the case of motor failure, many failures are caused by the deterioration and loss of lithium-based grease; mildly manifested as bearing noise, severe bearing dispersion may lead to motor drilling or burning of windings; in the process of dissecting the faulty motor, at least it can be found One of the following symptoms: dry grinding condition of bearings or lack of oil; oil turns black and agglomerates; bearings have obvious mechanical or electrical corrosion damage; motors with these problems manifest as bearing noise in the early stage of failure; The problem may be attributed to the quality of the bearing, naturally ignoring the influence of grease and its related factors.
Reasons for grease deterioration:
The grease running in the bearing is damaged by mechanical forces that break up and shorten the fibers of the thickener, reducing the ability to maintain the structure of the grease, i.e. consistency changes. If the consistency varies widely, it will run off the work surface. At the same time, during operation, the grease is affected by the increase in temperature. Due to the colloidal damage of the grease, the Base Oil will evaporate or part of the base oil will be lost, thereby reducing the oil content of the grease and possibly oxidative deterioration.
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