"Jim Wilkins" wrote in message
...
On Dec 1, 1:01 am, "Ed Huntress" wrote:
...
Right. But even when they fail, the spalling may not spread around. If the
load on these "points" is very high, they may not spall at all: the points
will just displace plastically, or fracture off from local overload. Then
some of the preload is relieved; the bearing runs loose; but the mean load
on the bearings is reduced....
Ed Huntress

Are you suggesting that lower grade bearing components have less
stringent heat treatment?

jsw

No, I wasn't suggesting that, Jim. I don't recall the ABEC specifications on
heat treatment, but the point here is that imperfect balls and races will
have high points, where the specific load will exceed the compressive
strength of the metal, and will get squashed down or broken off.

--
Ed Huntress