We have introduced a series of ball mill equipment, each of which has its own unique advantages, unique technical characteristics, and a lot of common knowledge. We have only touched on a small part, and we still need to make continuous supplements and improvements. Today we return to the topic of ball mill. We have introduced a lot about ball mill. Some knowledge is a complete system, and there are also many sporadic technical points. We also try our best to help us make up for it and introduce the ball mill more comprehensively, but our work is far from enough. There are many shortcomings. We need to do some relevant sorting and combination work on the ball mill in a long process. At the same time, some knowledge points are relatively scattered, which requires us to summarize the knowledge of a system. The topic of ball mill that we are about to describe has been introduced a lot before. It is about the knowledge of bearings. Bearings are very important equipment on ball mills, and their role is irreplaceable. Therefore, the maintenance of bearings must be done well. There are many ways to protect bearings. Not only do we need to pay constant attention to them during production, but we also need to carry out excellent maintenance and protection work in the later stage. The lubrication of bearings is also very important. Therefore, we will make some supplements on some ball mill lubrication knowledge we introduced earlier, which are some points to note about the use of grease on bearings.

In the usual ball mill production activities, we usually use lubricating oil to lubricate the bearings. In fact, grease can also be used in bearings, but we need to pay attention to some questions in use, and we should use it reasonably according to the working conditions of the ball mill sliding bearings. We have summarized how to use this question reasonably, and listed some matters for attention:

1. Suitable for the working conditions of the bearing. When the bearing is at a low speed and a large load, we should use grease with a small cone penetration; when the bearing is at high speed, we should focus on using grease with better mechanical stability.

2. The temperature limit. The dropping point of grease is usually 20-30 degrees. At the same time, when the bearing is working at high speed, we must pay attention not to exceed the permitted use range of grease.

3. Points to note in an environment with high humidity. When engaging in ball mill production activities in a water-sprayed or relatively humid environment, grease with good water resistance should be used.

4. Requirements for grease. Regarding the requirements for grease itself, in addition to good adhesion, the viscosity of the base oil of the lubricant should not be too high.

These are what we generally need to pay attention to in the daily production of ball mills. There may be other problems in individual practical operations. I hope we can pay more attention to them, use the experience accumulated in our daily operations, and record and summarize the problems that arise.