Improve the bearing seat accuracy and installation method; Reduce bumps; The clearance should be as small as possible; Specific characteristics: the lubrication of multiple engines is not good. Vacuum dipping process is adopted. Use grease with good lubrication performance;Choose a bearing with a small clearance or apply a preload to the bearing; Crawling of bearings. Strengthen the sealing performance of the bearing; Channel damage. Excessive clearance; Too small clearance causes excessive internal load; C. Specific characteristics: After being corroded, the bearing surface rusts more seriously than the first surface. High frequency and vibration 'DaDa. Improve the surface processing quality of the bearing raceway and reduce the waviness amplitude;Choose a good grease. Choose good grease; Clutch Release Bearing Improve the sealing form.Strengthen the alignment of the bearing...': Specific characteristics: The sound frequency changes with the bearing speed, and the surface waviness of the parts is the main cause of noise. The selection of tolerance zone; CInstallation error; Improve the precision of the retainer; In winter, the motors with ball bearings at both ends often generate unstable vibrations due to the poor shaft alignment performance. Improve the cleanliness of the installation environment. Choose the correct grease and use an appropriate amount; Too much grease causes the resistance of the lubricant to increase; Impurity sound: Reason analysis: caused by the cleanliness of the bearing or grease, an irregular abnormal sound is emitted. Cause analysis: As the paint on the motor bearing housing dries, the volatilized chemical components corrode the end face, outer groove and channel of the bearing, causing abnormal noise after the channel is corroded. Reduce the moment load and reduce the installation error; Select bearings with small radial clearance; Reduce the temperature of the motor