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Analysis and solution of motor bearing abnormal sound
1, the retainer sound "å” Lee å” Lee ... ..." Analysis: by the cage and rolling body vibration, collision, regardless of the type of grease may arise, to withstand torque, load or radial clearance when the larger Produce a solution: A, to improve the accuracy of the holder B, use a small bearing clearance or bearing preload C, reduce the torque load, reduce installation error D, the choice of good grease 2, continuous buzzing "buzzing ... "Cause analysis: The motor is no-load operation is issued a beep-like sound, and the motor axial abnormal vibration, open or shut down when the" Om "sound Features: Multiple lubrication condition is not good, winter and both ends with ball bearings Of the motor, mainly axial misalignment performance is not good, under the influence of axial vibration produced an unstable vibration solution A, with good lubricating grease B, plus preload, reduce installation error C, choose diameter To the small bearing clearance D, to improve the rigidity of the motor bearing E, to enhance the self-aligning bearing Note: The fifth played a fundamental role in improving the use of 02 small groove curvature, 01 big groove song rate. 3, paint rust analysis: As the motor bearing casing oil after the dry, volatile chemical composition of the corrosion of the bearing end face, the outer groove and the channel, so that the channel is abnormal after the abnormal corrosion tone Specific features: Corroded bearings Surface rust is more serious than the first side Solution: A, the rotor, chassis, drying or drying assembly B, reducing the motor temperature C, choose to adapt to paint the model D, to improve the motor bearing placed in the ambient temperature E, Caused by the use of oil, grease rust caused less silicone oil, mineral oil most likely to cause F, the use of vacuum dipping process 4, impurity tone Cause analysis: caused by the cleanliness of bearings or grease, issued an irregular abnormal tone Specific features : Occasional occasional noise, when the big small no rules, multiple high-speed motor solution: A, selection of good grease B, improve the cleanliness before grease injection C, to enhance the sealing performance of the bearing D, to improve the cleaning of the installation environment Degree 5, high frequency, vibration sound "da da ... ..." Specific features: the sound frequency changes with the bearing speed, parts surface waviness is the main cause of noise. Solution: A, to improve the quality of the bearing raceway surface processing to reduce the amplitude of the waviness B, to reduce bumps C, correct preload and clearance play, check the free end of the bearing operation, to improve the accuracy of shaft and bearing installation method 6, heating specific features: After the bearing operation, the temperature exceeds the required range Analysis: A, too much grease, lubricant resistance increases B, clearance is too small caused by excessive internal load C, the installation error D, sealing equipment Friction E, the bearing crawling solution: A, the choice of the right grease, the appropriate amount of B, correct the clearance preload and cooperate to check the operation of the free end of the bearing C, to improve the bearing accuracy and installation D, to improve the sealing form 7, the bearing handle is not good Specific features: Bearing rotation when the rotor bearing feel impurities, block sense Analysis: A, excessive clearance B, the inner diameter and shaft with improper C, channel damage Solution: A , Clearance as small as possible B, the choice of tolerance zone C, improve accuracy, reduce damage to the channel D, grease selection