[Amps] Re: SB-220 fan (oil) question

[Dave Haupt]

Routine maintenance manuals for industrial equipment
suggest that oilite bearings (oil-impregnated porous
bronze) lose the lubricating qualities primarily
because the oil wicks onto the motor shaft, and then
it's absorbed into attracted dust particles. 
Therefore, a simple re-oil is not recommended. 
Instead, a cleaning off of the dust and dirt is first.
 Using cotton swaps with a very light amount of
alcohol is indicated.  The company that produces the
bearings suggests that the porosity of the bearings is
greatest on the surface where the bearing contacts the
motor shaft, therefore the proper point of oil
application is the shaft.

The standard lubricant in oilite bearings is mineral
oil.  3 in 1 oil is mineral oil, but my preference is
to start with drugstore mineral oil, saturate a cotton
swab, apply to the motor shaft and let gravity pull it
into the bearing.  Then remove excess mineral oil from
the shaft with another cotton swab.

73,

W8NF


Date: Fri, 2 Jul 2004 10:01:33 -0400
From: "Mike Sawyer" <kc4slk at uplink.net>
Subject: Re: [Amps] SB-220 fan (oil) question
To: "R.Measures" <r at somis.org>, <wx3m at comcast.net>
Cc: amps at contesting.com
Message-ID: <003c01c4603d$16ad8a80$354c56d1 at D9PBT931>
Content-Type: text/plain;	charset="MACINTOSH"

It is my understanding that Oilite style bearing do
NOT require 
lubrication.
Due to the fact that a lubricant is (graphite??) is
embedded into the 
metal.
Mike(y)
W3SLK

----- Original Message ----- 
From: "R.Measures" <r at somis.org>
To: <wx3m at comcast.net>
Cc: <amps at contesting.com>
Sent: Friday, July 02, 2004 4:44 AM
Subject: Re: [Amps] SB-220 fan (oil) question


ð  By drilling c. a #57 hole in the casting above the
oilite bearings'
felt oil wicks and injecting oil into the wick with a
syringe.  A
sloppier, lazier way is to use a G. C. pen-oiler to
inject oil on the
shaft. next to the armature.  5w or 10w oil seems to
work well.
cheers


	
		
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