Another possibility is that if a machine is used regularly, there is enough minute wear to the bearing that, even if it swells, the inner surface wears away and the shaft remains free turning.
Ron L -----Original Message----- From: phono-l-boun...@oldcrank.org [mailto:phono-l-boun...@oldcrank.org] On Behalf Of Rich Sent: Saturday, July 09, 2011 12:42 AM To: Antique Phonograph List Subject: Re: [Phono-L] FW: Frozen mandrel bearing Potmetal continues to grow until it just crumbles. Reaming is a temporary fix. As someone else pointed out the bearing has probably been lubed with 3 in 1 in the red can which is a pure mineral oil with no rust or oxidation inhibitors and just soaking with Kroil will usually get it going again. Not all potmetal of that period is defective. Oxidized 3 in 1 is a powerful adhesive though. On 07/08/2011 08:31 PM, Steven Medved wrote: > > > > > If I remember correctly the home and triumph pot metal bearings are thick, I would think if the shaft could be removed the bearing could be reamed out to the correct size and it could be used. Has anyone ever tried this? Steve > _______________________________________________ > Phono-L mailing list > http://phono-l.oldcrank.org > > _______________________________________________ Phono-L mailing list http://phono-l.oldcrank.org _______________________________________________ Phono-L mailing list http://phono-l.oldcrank.org
