Elaborate motor bearing lubrication additives for the first time

Elaborate motor bearing lubrication first 2020 - add quantity 09 - 17 a engineer in WeChat group asked me when installation of motor bearing grease should be added? He saw something gave some advice on the digital reference books, but don't know how to calculate it. In fact, if the engineer to ask how much grease motor bearing installation should be added, the problem is many technical personnel can blurt out. The problem is that this number is how to calculate? Live how to safeguard the adding amount of? Deep q, this problem becomes interesting. Therefore, I tell you about project. First, the amount of adding grease bearing installed for the first time. To answer this question is very simple, that's all bearing internal filling, bearing the ministry of interior - 30% of the remaining space 50% fill grease. This conclusion a lot of people know, but the actual loading when there are several questions need to be clear: 1, 'bearing internal full fill, then fill in how much is filled with matter? What unit? G? Cubic centimeters? 2, 'bearing chamber the remaining space refers to where? The small cover inside? Another part of the end cover? 3, 'bearing chamber - 30% of the remaining space 50% ', how to measure? What is the unit? G? Cubic centimeters? The field staff how to take control? Very obviously, the above problem can't answer clear all the advice can't actually do. Us one by one: first of all, 'bearing internal space all fill this sentence refers to a concept of space. Personnel at the scene of the engineering practice, it is difficult to use spatial units to measure grease quantity. More weight, or quality. That is about to the space unit convert quality. This is very simple, the volume multiplied by the density is ok. Question is' bearing within the remaining space this space where go to? Each bearing to ask the supplier? Can't, also do not need! Today said a simple calculation method: if you look at each manufacturer of bearing catalogue, you will find this number has a bearing weight. We will take full advantage of dry this number for calculation. Method is as follows: therefore, bearing internal if you need to fill grease, need to fill in is equal to the weight of the above calculation of bearing internal space multiplied by the density of grease. Through the calculation, it can get clear first fill in the weight of the grease. With this number every time writing process guidance, to be sure that every time I fill in the number of controlled reasonably. In fact, at the time of on-site installation, due to the technique problems, such as installation, these can lead to oil it is difficult to fully put in. This also means that the bearing internal fill the grease when there are air bubbles. If the high-speed bearing in this case, the bubble will bring effect similar to the gas explosion. So after the loading bearing grease when need to have a manual slow fat action. Lubrication bearings at this time, of course, the ministry of interior is filled, come there will be a part out of the grease and fat, this situation is not necessary to fill. In other words, a little 'vacant is appear, also unscathed. Just can't be too much less, so the advice of first fill in the amount or need to. （ Source: the coalification run dry quenching technology exchange learning platform)