I tried a forum search for related topics and got zeroed.
I recall some limits being discussed, but maybe that was on the old board.
I seem to recall numbers like 0.03 inches per second over all or filtered for a packaged new bearing to avoid false brinelling.

Does anybody have a source ?

Thanks ,

Dan Timberlake

I don't know any limits for storage or otherwise. One thing that limits susceptibility is the orientation of the bearing as you probably know. Store it as if it's mounted on a vertical shaft (I'm not sure if you call the horizontal or vertical).

I have only one data point to offer. 0.17 ips on the bearing housing of a between bearings centrifugal pump while secured IS enough to cause false brinneling within a few years.

Thanks Pete.

That's the ball park I'd figure would be much-much-too-much, and we are probably higher than that.
My recollection was one of our European brethren (maybe Arne) had a value,and maybe a link to some published SKF or FAG specs. I think it was well under 0.1 ips. I'm putting together a "trades" table for a presentation showing why I am afraid to decouple a pony motor and let it sit idle in a truly miserable environment.