Low noise bearing the correct way of installation and adjustment

Low noise source bearing the correct way of installation and adjustment: bearing | last updated: - 2020 06 - 22 low noise bearing the correct way of installation and adjustment of low noise bearing installation and adjustment of right way bearing noise is inevitable, so many have chosen when check the bearing the use of low noise bearings, that of low noise bearings bearing used in the installation and adjustment of peace is the same? The author here to share about low noise bearing the correct way of installation and adjustment. 1, installation and adjustment of low noise bearing can also emulate grouping method of long life bearings, makes the interference fit the size is consistent, bearing clearance is relatively consistent, and hope to cooperate with interference within may take smaller values, to ensure the deformation of bearing raceway is small, and rolling body caused by noise is smaller. 2, clearance on the relationship between the noise is very large, ideally when import deep groove ball bearing is in running state, the highest temperature clearance value is zero. Judging methods of clearance is too large, stationary state that the axial displacement of the reciprocating amplitude is bigger, the big and heavy turbidity of a noise during operation. 3, if the hate sharp whistlers, shows bearing preload is too big, preloaded, bearing a large prestressing degree should have to relax. If the clearance is too large, can make the two bearing ring along the axial relative offset slightly: both reduced clearance, and increase the axial rigidity, bearing noise can be reduced. 4, rolling body around would not bite into the no-load area or channeling, that will not only increase the noise can also cause wear and tear, and the small clearance and large axial stiffness can eliminate the phenomenon. But cannot too small clearance, lest cause high temperature and shorten the life. 5, sometimes due to host large working temperature range, or shaft with a hole the size of the discreteness is very big, can't get a setting on a proper clearance, in this case, can be used for bearing outer ring elastic constant pressure preload method. Low noise bearing the international standard of vibration velocity ( Commonly known as V standard) : 1. Because has not cancelled the original standard of vibration acceleration, therefore the standard as published by the ministry of machinery industry standard. It is according to the European standard and combined with the actual situation of China and development, the need to detect bearing vibration velocity. Bearing the quality levels of (divided into Equivalent to the national standard) 。 It is divided into five level of quality: V, V1, V2, V3 and V4. All kinds of ball bearing quality level from low to high respectively V, V1, V2, V3 and V4; Rolling bearing ( Cylinder, cone) The quality level from low to high respectively is V, V1, V2, V3. 2. By testing the bearing at different frequencies ( The low frequency, intermediate frequency and high frequency) B at the rate of speed to reflect the quality of the bearing. Whether can be roughly analysis bearing geometry problems ( For example, the steel ring oval) , race/the quality problem of the rolling element and cage's quality problem, it is obviously improved than vibration acceleration. The quality of the bearing. At present, the domestic bearing export to Europe, the Chinese military and aerospace are conducted in accordance with the standard bearing quality detection. At the same time, test the quality of the bearing in Europe and to identify counterfeit bearings provides a feasible method. 3. Bearing quality inspection, there are two parallel standard, and according to the standard of 'V' check, has the standard of 'Z' high quality level of bearing may not have the good quality performance. There is no corresponding relationship between them.