On 05.09.15 20:49, Gene Heskett wrote: > This brings up a question re locking the shaft into its bearings. Red > threadlocker seems like it should work. Doesn't. Superglue seems like > it should work. Doesn't. These bearings are a hundred lb or more press > fit on this A2 shaft, and they still walk the shaft thru them given > enough time. > > So, is there a magic glue concoction that will lock the shaft to the > bearings?
Dunno how good the magic, but a month or two ago, I asked the manufacturers of Loctite whether their 680, or 680 upgrade, gear/bearing retaining goop, with appropriate primer, would be good for locking a zirconia bearing onto a stainless steel shaft. they said: "Unfortunately, LOCTITE anaerobic products (like the 680) can only be used on metal surfaces. Zirconia is a non metal (i.e. ceramic) and a Primer is not suitable for this application." So I didn't try it, but it might do the trick in your application. I found their info file: 328661_Customer_Infomation_Loctite_680_AP_131105.pdf from this page: http://www.loctite.com.au/retaining-4052.htm but there's doubtless a page somewhere with less electron-mileage in it. The headline illustration in the pdf shows preparation for its use in retaining a bearing. The introduction says: "Typical applications include holding gears and sprockets onto gearbox shafts and rotors on electric motor shafts." Incidentally, I figure you meant "locking the shaft into one of its bearings", the other necessarily being retained in its housing instead, to allow for thermal expansion of the shaft, chosen e.g. a la: http://www.smbbearings.com/technical/bearing-shaft-housing-fit.html Erik (who's only pretending to know anything about bearings) ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
