Request an explanation for the interference amount
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I work in equipment management, so I’m not very familiar with manufacturing and installation processes. When reading books on bearing technology, I often come across the concept of interference fit, but I can’t figure out how it works. I see that when fitters install bearings, they simply heat them up and push them onto the shaft – so how is the amount of interference controlled?
The interference fit between the bearing and the shaft is determined once the shaft has been machined; if control is necessary, then measure the shaft diameter and adjust it accordingly
Just read a book on tolerance fit and you’ll understand everything
The interference amount is a tolerance range; any fit between a shaft and a hole within that range is considered an interference fit. In other words, when a machinist processes the shaft for you, as long as the maximum actual size of the shaft falls within the specified tolerance range, it is sufficient. Because when machining the same shaft, there is also some variation in dimensions.
If you manage equipment and didn’t study mechanics, look up a mechanical design manual.