I've been digging on my own and think I know what's needed, but because I've never done this before I'd like to run it a flagpole and see if anybody shoots or salutes.

What I've got is a 16mm needle bearing from McMaster Carr, P/N 5905K58, that I need to fit to a shaft. The McMaster catalog has a bearing tolerance section that says for a 16mm shaft the clearance is +0.000, which surprised me. Shouldn't there be some allowance for expansion?

The minus is -0.011mm which I make out to be 4 tenths. I may be in trouble!

If I've got this wrong would someone please point out the error of my ways ....

Thanx.

SP

What I've got is a 16mm needle bearing from McMaster Carr, P/N 5905K58, that I need to fit to a shaft. The McMaster catalog has a bearing tolerance section that says for a 16mm shaft the clearance is +0.000, which surprised me. Shouldn't there be some allowance for expansion?

The minus is -0.011mm which I make out to be 4 tenths. I may be in trouble!

If I've got this wrong would someone please point out the error of my ways ....

Thanx.

SP

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