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My knowledge is related to bearings used in automotive engine as idler pulleys so might not be relevant.
Not sure "press-fit" would be entirely adequate as I do not know the translation of the word I have for this, but I meant C3 is more for assembly that requires a machine press tool (hydraulic press, etc.) with important assembly force if it makes sense.
For bearing pressed by hand or with a "light tool" (hammer etc.), in my opinion C3 would not be necessary and with the application I thank a standard bearing should be perfectly fine
paulbiche
Cheers.
Sorry I edited my post as I read up more on them and really they only seem relevant for high rpm situations where the heat requires room for expansion.
But now going to hold fire after what you've said about C3 being better for press fit.
It's for this: