Author Topic: Imported bearing damage degree judgment skills  (Read 1111 times)

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FANADEBearing

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Imported bearing damage degree judgment skills
« on: January 02, 2014, 03:02:32 AM »
Through bearing failure and degradation, performance status parameters to judge and predict the performance, reliability, and use bearing on the part of the abnormal situation, cause and degree of risk identification and judgment, decided to repair and improve the method of comprehensive technology. Therefore, bearing fault diagnosis technology is not a simple fault detection (or monitoring) technology, is not a simple tally instrumentation.Imported bearing failure analysis of the basic requirements http://www.exrelease.com/blog-248667-130488.html . Accurately and quickly and effectively to collect signals, data processing, manual or automatic identification and judgment. In order to confirm the repair cycle science, but also according to the mechanism of all kinds of fault, to fatigue, wear life necessary test and estimate. Judge bearing the degree of damage in use can use a listen to, two touch, three observation method to determine.
1, listening: using the hearing to identify irregular operating at a very commonly used method. If use a screwdriver or electronic stethoscope to detect abnormal noise is a compact has certain experience of the operator and maintenance personnel are often used. Bearing if good operation condition is low purring sound, such as SKF bearing noise, sharp hissing sound, the sound of the squeak, as well as other irregular, could be said to import bearings has been in bad state of operation.
2, touch: high temperature often said imports bearing has been in exceptional cases, the high temperature inside the bearing lubricant is harmful, but bearing some of the time at high temperature caused by SKF bearing lubricant inside, if the bearing in the long run of more than 120 ℃ temperature will reduce the bearing life. The causes of bearing high temperature lubricant inadequate or excessive lubrication, lubricants contains impurities, heavy load, bearing damage, such as make friction clearance and oil seal. In normal circumstances, the bearing in the lubrication or there will be a natural temperature rise after the lubrication and lasts for a day or two.
3, observation: get good lubrication bearing if and no impurities and moisture to enter, showed no wear of bearing oil seal, if after open the imported bearing box, should be periodically checked visual check bearing and oil seal. Check of the condition of the near the bearing oil seal to ensure that they are enough to prevent hot liquid, corrosive liquid and gas along the axis of infiltration of bearing, oil seal, if damaged, it should be replaced as soon as possible. Check the automatic lubrication system to ensure that the oil or grease into the SKF bearing, and ensure that the correct amount and check whether the lubricant is color or black, if has this kind of situation usually said lubricant to the impurities, this kind of situation for the use of the bearing is also harmful.

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