Rusty,
Maybe this is an oversimplification, but
can’t you take an old bearing and put it in the oven @ 350 degrees for a half-hour
and see how it reacts? Just set it on the cookie sheet right next to the
brownies.
Mark S.
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Al Gietzen
Sent: Monday, January 24, 2005
6:18 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re:
Performance coatings- bearing damage?
Subject:
[FlyRotary] Re: Performance coatings- bearing damage?
Will the bearing be damaged at 350
degrees?
I'm thinking there's a good chance it will.
I’d
say no. The is no metal in there that is going to be damaged by 350F.
350C would be another matter.
Al
As I understand it, the
whole issue with keeping the oil temp below 210 is to keep from melting the
bearings
210 is a good limit for the side seals.
If the bearings were Babbit metal (lead/tin alloys with some copper and
antimony thrown in, invented by Isacc Babbit about 150 years ago), the melting
point would be somewhere around 550F. I have no idea what the composition
of the rotor bearings are, but I’m guessing something with much more
copper and zinc in it (akin to bronze) and the melting point would be
considerably higher.
But like I said; I’m only
guessing.
Al