Regarding lubrication and operating loads
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I have reviewed a lot of information on the selection of lubricants, and most of it provides general guidance on how to choose between low-load, medium-load, and high-load applications. Could some expert please explain how loads are classified? A rough standard would also work.
I personally think this is also a relative concept. Each size of shaft has its corresponding load range. Just like with vehicles, sedans and trucks have different loading capacities – a force of one ton represents a heavy load for a sedan, but it constitutes a low load for a truck. This is just my opinion, for reference only :)
For equipment, this is generally related to the power it transmits; the higher the power, the greater the load. When selecting lubricating oil, it is necessary to take into account factors such as the type of bearing and its speed.