Combination of bearing damage judgment skills

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By the combination bearing failure and degradation, performance status parameters to determine and predict the reliability and performance of the bearing, the site of the abnormal situation, becau se the degree of risk identification and judgment, decided to repair and improve the methods of comprehensive technology. Therefore, bearing fault diagnosis technology is not simply the fault detection (or monitoring) technology, is not a pure point inspection instrumentation. Right, quickly, effectively signal acquisition, data processing, manual or automatic identification and judgment. In order to determine the repair cycle of science, should be based on the types of failure mechanisms of fatigue, wear life necessary tests and estimates. Determine damage bearings in use can be one, two touch, three observation methods to determine.cross bearing
1, observed: bearing good lubrication and debris and moisture from entering the bearing oil seal wear, if the the original bearing box is opened, shall be visually check the bearings and regularly check the oil seal. Check status near the bearing at the oil seal to ensur e that they are sufficient to prevent hot liquids, corrosive liquids and gas infiltration along the axis of the bearing oil seal if damaged should be replaced as soon as possible. Check the automatic lubrication system to ensure that oil or grease into the combined bearing and ensure that the correct amount added at the same time check the lubricant is discolored or black, if this situation is usually lubricants containing impurities, this case bearing use is harmful.
2, listen: the use of a hearing to identify irregular operation is a very commonly used method. With a screwdriver or electronic stethoscope to detect the approach of a streamlined non-normal noise is experienced operator and maintenance personnel often use. If the bearing is good running condition will be issued under a low whining sound, such as the combination of bearing issued sharp hissing sound, squeak, and other irregular sounds, there is a bearing is already in a bad state of operation in.
3, touch: high temperature often indicates that the bearing is in an abnormal situation, the high temperature of the lubricant within the bearing is harmful, but bearing a certain times of high temperature caused by the lubricant within the combined bearing If the bearing temperature exceeds 120 ℃ long-term operation will reduce bearing life. The reason of bearing high temperature caused by a lack of lubricant or excessive lubrication, lubricant impurities, the load is too large, bearing damage, lack of clearance and the oil seal friction engage. In normal circumstances, the bearing temperature rise just lubrication or after in the lubricating natural and will last one to two days.