With the development of industrial production in our country, the lubrication of equipment is increasingly valued by industrial and mining enterprises. Lubrication management of equipment is one of the important management contents for maintaining and protecting the normal and safe operation of machinery and equipment. The mechanism of lubrication is that two directly contacting parts (friction pairs) move together. In order to prevent damage, a lubricating substance is added to it to fill the concave and convex areas and maintain a certain oil layer, separating the two contact surfaces to reduce friction and wear. At the same time, it also plays a role in cooling or sealing. The purpose of lubrication is:
1. Provide proper lubrication to the equipment;  
2. Do not cause equipment malfunction due to poor lubrication;  
3. Maintain the normal operation of the equipment;  
4. Helps to improve productivity and production efficiency.  
According to statistics from the Japan Lubrication Committee in the 1960s, due to the emphasis on and improvement of equipment lubrication management, 20000 yen is saved annually. In 1966, the UK started improving lubrication management with friction technology, saving maintenance funds of 100 million pounds. Whether from developed countries or some state-owned large and medium-sized enterprises in China, equipment failures or accidents caused by poor lubrication such as lack of oil, incorrect oil quality, impure oil, deterioration, etc. generally account for more than 50% of all failures or accidents. As a technical manager of equipment, I have found that many pump workers have misunderstandings about the lubrication of equipment in their daily work, and it is necessary to make special corrections.  
Misconception one: Equipment lubrication=refueling
Someone said: Isn't lubricating equipment just adding some oil? Simply equating equipment lubrication with refueling, in fact, lubrication is not that simple. It is a science that comprehensively applies basic theories such as fluid mechanics, solid mechanics, materials science, applied mathematics, physical chemistry, etc. to study lubrication principles, lubricating materials and methods, and control harmful friction and wear. Refueling is just one part of lubrication. The lubrication of a device actually starts from its design stage and runs through the entire service life of the equipment.  
Misconception 2: Refueling=changing oil
Some pump workers believe that when changing the lubricating oil in their unit every month, the remaining lubricating oil in the oil tank should be drained and new lubricating oil should be added. This statement is also a misunderstanding. During the use of lubricating oil, it will deteriorate after a period of time due to frictional heat, mechanical impurities, and dust, which affects the lubrication performance. Therefore, it is necessary to regularly clean the oil tank several times before refueling. This method is called oil change, but most pump workers omit the process of cleaning the oil tank when changing the oil, thinking that "refueling=oil change", which has adverse consequences on lubrication work.  
Misconception 3: "Too much oil doesn't spoil the dish"
There is a saying that since lubricating oil has the function of controlling friction and reducing wear, the more lubricating oil there is, the better the effect will naturally be. However, this is not the case. Simply put, people add lubricating oil between two friction surfaces to form a thin oil film between them, avoiding direct contact and reducing friction. However, considering certain side effects of adding lubricating oil, it is necessary to strictly control the amount of oil added. For example, when refueling the oil pump in this workshop, it is necessary to be careful not to fill the bearing chamber completely, which will increase the resistance when the bearing rotates and easily generate heat. Generally, only one-third to two-thirds of the space before filling is needed.  
Misconception 4: Mixing lubricating oil is fine
Some people ask, since lubricating oil can also serve as a lubricant for equipment, what's wrong with using a mixture of centralized lubricating oil? We know that lubricating oil is a refined petroleum product extracted from crude oil. Different types and grades of lubricating oil contain different components and ratios. Generally speaking, lubricating oil is not easy to mix and use. In order to improve the rational performance of lubricating oil, a certain amount of additives must be added to the lubricating oil. The additives of various lubricating oils are different, including antioxidants, thickeners, oil-based additives, and extreme pressure additives. For example, the "Tianrun anti-wear agent" used in my workshop is added to the lubricating oil (N32) in a certain proportion. After several years of operation, the effect is good. If different grades of lubricating oil are mixed together, the additives in the oil may undergo chemical reactions, resulting in... Losing the function of additives damages the expected effect of lubricating oil.  
Misconception 5: Equipment must have leaks in order to be lubricated
Some people believe that equipment leakage is caused by equipment lubrication, and lubrication of equipment inevitably leads to leakage. Therefore, they do not attach importance to equipment leakage and even allow it to happen. It should be pointed out that equipment leakage refers to abnormal phenomena that are not allowed to occur according to the technical specifications of the equipment or exceed the leakage amount specified in the technical specifications. Strict leakage not only causes oil shortage or interruption accidents, but also affects the smooth progress of production and pollutes the surrounding environment. This not only destroys civilized production, but also wastes lubricating oil. People use lubricating oil to lubricate equipment, but it also brings about the contradiction of oil leakage. However, people are not helpless when it comes to equipment leaks. There are many methods and ways to prevent leaks. As long as we pay attention to it ideologically and ensure it technically, we can achieve both equipment lubrication and equipment leakage.  
The above are some rough opinions that I have summarized in my actual work. As long as we lubricate the equipment correctly, we can reduce equipment failures and maintenance costs, ensure long-term operation, and improve economic efficiency.