[bikedude987]

I just did this on mine and here are my experiences.

You can find AC bearings with the same envelope as what's in there. Here is where I bought mine: Bearings - Roller Bearing - UBC Bearing - BearingsDirect.com

IIRC the top is 30x62x16 (7206) and the bottom is 35x62x14 (7007)

I also bought some oil seals but had to make an adapter for the bottom.

I did some polishing on the spindle (borrowed a friend's lathe) such that the upper bearing was barely a slip fit.

I packed them with grease and may or may not have ruined the races when I installed them.

They run HOT. like 'can't touch the spindle for more than a second' hot...I've tried light/no preload and heavy preload. I will soon remove the grease and try oil/inspect for wear. I think the grease may be too viscous and causing viscous heating and or skidding, or maybe they just have a lot of friction in them.

DISCLAIMER: there isn't room to fit a traditional back to back AC arrangement like a true spindle warrants. However, I believe that with a little tinkering, I can make a cool running, reliable spindle with these. I also realize I won't get anywhere near a proper bearing arrangement's life.

Hope this helps!:cheers:

[GG67]

Thanks Bikedude987