On Monday 01 June 2015 09:59:10 Erik Christiansen wrote: > I've just bought a couple of these: > > http://www.ebay.com.au/itm/6902-Sealed-Full-Ceramic-Zirconia-Oxide-Bea >ring-ZrO2-15x28x-7mm-Self-lubricating-/121649018412?pt=LH_DefaultDomain >_0&hash=item1c52d8b62c > > and the vendor says he doesn't have any datasheets. I'm wondering > what's the best fit for ZrO2 bearings? This general advice seems > intended for ZrO2 bearings as well: > > http://www.smbbearings.com/technical/bearing-shaft-housing-fit.html > Page is informative, but ends prematurely in iceweasel. The math looks like its all there, but I'd pay attention to the inner fit so as not to crack the inner race at elevated temps since most shaft material will expand faster than the ZR02.
While doing the breakin on the GO704, the quill got nicely above 125F after 15 minutes at 1000 revs. To me thats a sign of inferior bearing fit. I wonder if these might come in a size suitable for that? But first I gotta get me/my back into workable functioning condition. Unless they have some magic, I expect the screws & motor stuff will be here before that. That should start arriving on June 9th. > That seems like a pretty good starting point, I guess. > > Erik > > ---------------------------------------------------------------------- >-------- _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
