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How to check whether SKF bearing grease can be changed?
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In the process of using SKF bearings; grease is very important. If it is; use a modified grease; not only does not get the effect it should; but it will damage the bearing.
1. Oil flow investigation method: take two measuring cups; one is filled with lubricating oil; the other is placed on the table; the measuring cup filled with lubricating oil is lifted off the tabletop 30-40 cm and tilted; let lubrication The oil gradually flows into the empty cup; investigates its activity; the quality of the lubricating oil should be slender, uniform, and continuous; if the oil flow suddenly and slowly; sometimes there is a large flow; Has changed.
2, hand rub method: the lubricant is rubbed between the thumb and the index finger repeatedly grinding; better lubricant hand feels lubricity, less wear debris, no conflict; if you feel the conflict between the sand particles Sense; indicates that there are many impurities in the lubricating oil; can not be reused; should replace the new lubricating oil. Imported pump valve 3, lighting method: in the weather on a clear day; use a screwdriver to pick up the lubricating oil; at a 45 degree angle with the horizontal plane. Control sunlight; investigate oil droplets; under illumination; clearly see that no wear debris in lubricating oil is outstanding; sustainable effect; if excessive wear debris; should replace lubricant.
4, oil droplet trace method: take a clean white filter paper; drop a few drops of oil on the filter paper; after the oil leaks; if there is a black powder on the outside; contact with the hand has a sense of resistance; There are many impurities inside; good lubricating oil has no powder; it is dry and lubricated by hand; it has yellow marks.
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