[SEL] Babbitt lapping compound

[JIM KIRKES]

I find it very difficult to believe that there is an 
abrasive that "morphs from abrasive to lubracative."  How 
about some more details.  One other question about bearing 
lapping, how do you get the abrasive that is imbedded into 
the babbitt out?  The lapping process depends on the softer 
material becoming charged with the abrasive and cutting the 
harder material not the other way around as has been stated. 
I would not touch babbitt  lapping with a ten foot pole.

Jim

Jim and Diane Kirkes
Hemet, California U.S.A.
replace nomore with net to send mail
jd.kirkes at verizon.nomore
----- Original Message ----- 
From: "William Young" <wmlyoung at yahoo.com>
To: "The SEL email discussion list" 
<sel at lists.stationary-engine.com>
Sent: Thursday, April 03, 2008 9:28 AM
Subject: Re: [SEL] Babbitt lapping compound


Curt-san, You asked, "Why?"  Answer:  I think scraping takes 
skill & experience, neither of which I have.  The write-up 
by producers of this product indicate complete matching of 
surfaces, that the steel is not affected, only the Babbitt. 
Further, that the abrasive element of the compound morphs 
from abrasive to lubracative.
    Does the easy scraping method you refer to involve 
repetitively using Prussian Blue to identify high spots, 
scraping, rebluing ... until the degree of mating surfaces 
exceeds 80%?
    Please tell me more.  I may give it a shot.  Thanks, 
Bill