[GreenKeys] oil and grease

[DR HOUSE]

The actual KS 7470 and 7471 lubricants the Bell System used based on  
Teletype's recommendations were plain non-detergent bearing grease and  
SAE 20 motor oil provided by the American Oil Co. of New Jersey.
KS, of course is an acronym for Kearny Specification... Kearny is a  
city in New Jersey where Western Electric wrote it's specifications

Don


On 7 Aug 2012, at 1:53 PM, Richard Knoppow wrote:


----- Original Message ----- From: "DR HOUSE" <k9tty at dls.net>
To: "Richard Knoppow" <1oldlens1 at ix.netcom.com>
Cc: <greenkeys at mailman.qth.net>
Sent: Tuesday, August 07, 2012 11:22 AM
Subject: Re: oil (and grease)

>
    I wonder if there is the same problem with Teletype that there is  
with old cameras: that the lubricants are specified by brand name and  
type and where some of the products have been off the market for  
decades.  The problem is finding out what these really were and what  
modern products will replace them; sometimes you can guess but not  
always.
    BTW, I am not very sanguine about using engine oil for general  
lubrication. It usually has additives which may be advantageous in a  
gasoline engine but have undesired effects for cold lubrication.
    Oil for machine bearings, whether sleeve or ball/roller should be  
free of acids and waxes that will turn to sludge with time. Synthetics  
have the advantage of not oxidizing but may not have the right  
lubricating qualities.  I am no expert but have done enough research  
to discover that lubricants are not a simple subject.  I think where  
you are dealing with something like a Teletype machine which may have  
parts which are difficult to replace or to obtain that some attention  
to this will pay off.
    I suspect you know all this stuff :-)


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com