The essence of lubricating rotating equipment – proper use of lubricants?
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When to use grease, the amount to use, and when to use lubricating oil. For example, regarding the amount of grease used in bearings, it’s important to know that more isn’t always better; 1/3 to 1/2 is the optimal amount. Using too much grease increases friction, which can lead to overheating and even damage to the bearings.
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I would like to say a few things about lubricants: if we consider a set of equipment as a human body, then the key components of that equipment are equivalent to the heart in the human body, and lubricants serve as the essential blood for that heart. Everyone knows the importance of blood for the human body; if there are problems with the blood, it’s like the lubricant in a pump becoming degraded or emulsified, which means the equipment won’t be able to function for long. Lubricants have many physical properties, among which viscosity, moisture, contaminants, and flash point are important. In summary, the quality of lubricant is key to the long-term stable operation of equipment. Cannot be ignored!
Oh, and grease. Many people generally assume that the more bearing grease there is in a cooling fan, the better, but this is not the case. I attended a training session organized by SKF on the installation and removal of bearings last time. They mentioned: \"The bearings with dust covers provided by us at SKF do not need to be disassembled once they are installed and in use; lubricant has been applied to them as required at the time of manufacture, and under normal conditions this lubricant is sufficient for continuous operation for more than two years.\" They added later that the amount of grease to be used is determined through scientific calculations, years of experimentation, and experience-based insights. I believe that in order for bearings to achieve their maximum service life, those working in the field of machinery, especially those responsible for equipment maintenance, must have a thorough understanding of lubricants.