Angular contact ball bearings or deep groove ball bearings for vertical motors. What is the minimum motor noise?
Angular contact ball bearings generally need to be used in pairs, and the installation methods have two types, "back to back" and "face to face". No matter which method is used, there should be a set of spacer between the bearing and the bearing. In the use of high requirement, this group of spacer thickness is different, the axial after installation of bearings in the no-load condition slightly as the degree of interference, this is the so-called "preload" is also called "pre load". With this method, the clearance of the bearing can be eliminated, the operation will be more stable and the noise will be less. This kind of structure can often be seen on the high precision grinding machine, but this kind of installation needs some experience and test means, and without experience, don't use it casually, so as not to make mistakes.Motor bearing is easily broken and big noise is generally the balancing problem, first proposed the correction of rotor dynamic balance, high speed and low noise bearings imported bearings (Note: low noise ball bearing retainer is non metal), at the time of purchase, precision bearing selection above D or D. General can solve your problem.So, if used properly, matching bearings will make the noise a little better.
If installed properly, the deep groove ball will be less noisy! Angular contact bearings have much better bearing capacity!
