On Tue, 23 Oct 2007 16:10:44 GMT, "Michael S"
wrote:


no colour change in it and there was no grease left in it. balls and race
are quite sloppy and grindy. guess roasted wasn't quite the term to use but
the sheet metal next to where the bearing is mounted is a lot hotter than I
can touch. crammed some grease in it last night and it ran quiet for about
2 minutes, but guess a high temp grease would be a good thing. of the
beaings I have found looking around so far a 608zz w/ steel shields is whats
in the furnace. to bad its $8 shipping for $2 and change for 4 bearings

There are solid lubricants intended for bearings in high temp service.
You can special order bearings from the mfr pre-lubed with this stuff.
It looks like caked and hardened grease packed around the balls and
retainer. Here's an example...

http://uniquetechnologies.com/serv01.htm

--
Ned Simmons