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Bearing rolling sound check maintenance - bearing knowledge

by:Waxing     2020-05-31
The sound device is adopted to the size of the rolling sound of bearing in operation and the quality inspection, bearing even with slight stripping damage, also an exception and irregular, and with the sound of the measuring device can distinguish. Using the hearing to identify irregular operation is a very common method. For example, with the aid of electronic stethoscope check feel a certain parts of the abnormal noise is often experienced methods used by the operator. If the bearing in good state to swing low whimpering sound. If a sharp hissing sound, make sound, and other irregular often said bearing in adverse to swing. High-pitched squeaky noise may be caused by improper lubrication. Inadequate bearing clearance can cause metal sound. Bearing outer ring orbit of concave dent causes vibration of the orbit, and cause smooth and crisp voice. If because of the installation caused by hitting scar also can produce noise, the noise will be as the bearing rotating speed of high and low. If there are intermittent noise, rolling parts may be damaged. This voice is happens when the damaged surface is rolled out, bearing inner if pollutants often causes hissing sound. Serious with bearing damage can produce irregular and big noise. A, bearing cleaning divided into rough washing and fine washing, bearing can be put in use at the bottom of the container and on the metal frame. B, rough washing, oil using a brush to remove grease or adhesive. If at this time in oil bearing, pay attention to the rolling surface due to foreign bodies such as damage. C, fine cleaning, slowly rotating bearings in the oil, must be carefully. Commonly used cleaning agent for neutral aqueous diesel or kerosene, according to the need to sometimes use warm lye, etc. No matter use which kinds of detergent, often should filter clean. After cleaning, coating anticorrosive oil or antirust grease on the bearing immediately. 2, checking and judging: in order to judge remove the bearing can be reused, bearing to inspect the dimension precision, rotating accuracy, internal clearance and mating surface, raceway surface, cage and seal rings etc. About the test results that can be used by bearing the judgement or master of bearing. Standard for judging the bearing according to the mechanical properties and important degree and inspection cycle. If you have the following injury, bearing shall not be used again, must be replaced. A fracture and defect of bearing parts. B raceway surface material on the surface of the rolling strip.
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