Oh God no - Part II

[staybusy]

This one I was sure would be a disaster..

I'm trying to do some work on my bandsaw and this god awful squeaking starts blasting my ears. I trace it to the top wheel, notice there's a bolt (part of it was stripped), 2 nuts (spinning freely) and 2 washers.. last owners modification I think

I take everything off, get a nice fresh chinesium bolt, cut it to the right length so I don't need the extra nuts anymore, put washers, lightly tighten it, job done. Flip the switch. The thing breaks instantly..

I was sure I was gonna have a hell of a time extracting it.. but thankfully I backed it out with a center punch and hammer. I got real lucky.

Any tips to stop that squeaking? I assume pull the wheel off and clean it or grease it or something?

Do I need a bolt with specific hardness? Can't risk that shit breaking again.