Canyon Angler
Addicted to ArboristSite
So I guess the bottom line is, chilling the bearing can't hurt, but might help, especially given the fact that aluminum is super thermally-conductive, and will dump its heat (via conduction) into whatever it touches, as fast as it can, and the larger the Δt, the faster the heat will transfer from the hot part to the cold part.
Now, if you were trying to do the reverse -- fit an aluminum part into a steel hole -- then chilling the aluminum part would make a much larger difference due to aluminum expanding/contracting about twice as much as steel for a given temperature differential.
This reminds me of that old wive's tale about how hot water will supposedly freeze faster than cold water...
Now, if you were trying to do the reverse -- fit an aluminum part into a steel hole -- then chilling the aluminum part would make a much larger difference due to aluminum expanding/contracting about twice as much as steel for a given temperature differential.
This reminds me of that old wive's tale about how hot water will supposedly freeze faster than cold water...