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Failure of construction machinery bearing noise What

Source: Time:2016-08-27 17:43:18 frequency:

Construction machinery bearing noise to identify it requires experience, we should try to carry out this work by hand. Attached to the shell can be clearly heard by listening or listening rod bearing sound, sound measuring device may also be used for the operation of the bearing rolling sound size and quality testing, to distinguish different fault.
Construction machinery bearing noise causes (laborers bearing Pic)
Construction machinery bearing noise are the following:
① inherent noise. This is a rolling bearing noise construction machinery itself, is a normal noise. Features: one issued bearing smooth rotation and continuous sound, the sound is small; when the speed changes, the main frequency unchanged.
② mounting error noise generated.
③ raceway noise. Construction machinery bearing raceway noise generating random ripple during rotation, which is the main component of the bearing noise. Features: raceway noise as raceways and rolling elements increase the machining accuracy is reduced.
④ rolling noise. Roller bearings prone to rolling noise. Features: mainly in the rolling elements enter and exit load zone time; poor performance or lubricant viscosity great when most prone; roller bearings can only bear the radial force, prone to relatively large radial clearance.
⑤ holder noise. Reason: the rolling elements and cage, sliding friction between the frame and the guide surface, and a rolling element cage and hit each other and emit noise. Features: cyclical; when using the rolling element guide cage, the instability of this movement is more serious, deep groove ball bearing retainer punched thin, low radial stiffness, axial, overall stability is poor, bearing high-speed rotation due to bending deformation of the self-excited vibration, issued a "beep."
⑥ inclusions noise. About 14% of premature bearing damage caused by pollution, caused by external contaminants into the bearing Face aperiodic vibration and noise. Features: randomness, especially small bearing on this very sensitive.
⑦ scars noise. According to statistics, 16% of premature bearing damage is caused by improper installation or not using proper installation tools. Features: constant speed, constant frequency noise; speed decreases, the cycle becomes long. If you use a high-viscosity oils, the noise will be reduced. Analysis: If the noise continuously, it may be raceway injury; if their noise with or without periodic, was rolling element damaged; if the rolling element fracture, will have a "file teeth sound, impact sound." .
⑧ starvation noise. Features: issue "galling whistle", if the load is heavy and serious lack of oil may have a "screaming."
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Add:Dalian Economic Zone, Liaoning Province      Tel:86-0411-85760320
Copyright:Dalian Runfu Bearing Co., Ltd.       Technical support by:Ji'en ChuangXiang
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