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Posted by Michael Koblic on July 3, 2008, 1:05 am
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Some of the threads here got me thinking: What, in general, is a proper
application for lubricating oil and when should one use grease?
I spent a fair bit on the web and am no wiser. Strong opinions abound, facts
are difficult to come by. The nearest I got is: "If it is like a pin in a
hole use oil, if the surfaces are sliding use grease". I thought lubrication
is by definition for surfaces that slide in one fashion or another, so
grease should be used for all?
Then there is the question of temperature range, molybdenum or not, etc.
etc.
Furthermore, as far as I can tell the same game that manufacturers and
retailers play with other chemicals (e.g. degreasers) is played with
greases. Call it automotive grease you pay X, call it a "mil-spec gun
grease" you pay 10X. And so on.
Any views here?
--
Michael Koblic,
Campbell River, BC
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Posted by newshound on July 4, 2008, 5:42 pm
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> Some of the threads here got me thinking: What, in general, is a proper
> application for lubricating oil and when should one use grease?
>
> I spent a fair bit on the web and am no wiser. Strong opinions abound,
> facts are difficult to come by. The nearest I got is: "If it is like a
> pin in a hole use oil, if the surfaces are sliding use grease". I thought
> lubrication is by definition for surfaces that slide in one fashion or
> another, so grease should be used for all?
>
> Then there is the question of temperature range, molybdenum or not, etc.
> etc.
>
> Furthermore, as far as I can tell the same game that manufacturers and
> retailers play with other chemicals (e.g. degreasers) is played with
> greases. Call it automotive grease you pay X, call it a "mil-spec gun
> grease" you pay 10X. And so on.
>
> Any views here?
>
> --
> Michael Koblic,
> Campbell River, BC
>
>
http://en.wikipedia.org/wiki/Grease_%28lubricant%29
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Posted by Michael Koblic on July 4, 2008, 11:43 pm
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>
>> Some of the threads here got me thinking: What, in general, is a proper
>> application for lubricating oil and when should one use grease?
>>
>> I spent a fair bit on the web and am no wiser. Strong opinions abound,
>> facts are difficult to come by. The nearest I got is: "If it is like a
>> pin in a hole use oil, if the surfaces are sliding use grease". I thought
>> lubrication is by definition for surfaces that slide in one fashion or
>> another, so grease should be used for all?
>>
>> Then there is the question of temperature range, molybdenum or not, etc.
>> etc.
>>
>> Furthermore, as far as I can tell the same game that manufacturers and
>> retailers play with other chemicals (e.g. degreasers) is played with
>> greases. Call it automotive grease you pay X, call it a "mil-spec gun
>> grease" you pay 10X. And so on.
>>
>> Any views here?
>>
>> --
>> Michael Koblic,
>> Campbell River, BC
>>
>>
> http://en.wikipedia.org/wiki/Grease_%28lubricant%29
That is certainly a good article. Still, many people disagree what some of
it means exactly. For instance in the gun community there are "greasers" and
"non-greasers". Even there the application may differ for the same firearm
depending on circumstances.
Many automotive manuals recommend use of two or three different kinds of
grease for different parts. Many people have asked why this is necessary and
in most of those cases I found the answers lacking.
Finally, there is the economic side of the issue, including manufacturers'
claims which may or may not be true, but that is another matter...
--
Michael Koblic,
Campbell River, BC
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Posted by Wes on July 13, 2008, 3:18 pm
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>Some of the threads here got me thinking: What, in general, is a proper
>application for lubricating oil and when should one use grease?
Oil fast, grease slow?
A 3000 rpm spindle with 8" bearings uses grease. Kluber.
Now a 30K rpm grind spindle uses air mist oiling. Have a few of those at work.
Bearings
weigh in at 1.5 inches or so across the ball line.
Ways use oil and they are slow moving. Likely has something to do with
evacuating debris.
Tackifiers are added to keep surfaces wetted.
Guns, I use a teflon impregnated oil and clean when using in a dusty enviroment.
Oil tends to be constantly added to surfaces in continuous motion, grease tends
to be a
one time application for continuous motion.
Our big HMC's use thin oil for bearing lubrication and cooling.
Depends on the application.
If you want to try a tenacious grease, try coupling grease. Like honey on a
cool day.
Yuck.
Wes
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Posted by Stealth Pilot on July 14, 2008, 8:37 am
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>
>>Some of the threads here got me thinking: What, in general, is a proper
>>application for lubricating oil and when should one use grease?
>
use oil unless it doesnt stay in place.
grease is oil mixed with a substance to give it more body.
bentonite clay ground finely is used in some greases.
others are described as oil mixed in mineral soaps.
use the manufacturer's recomendation. they've done the experimenting
for you.
Stealth Pilot
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> application for lubricating oil and when should one use grease?
>
> I spent a fair bit on the web and am no wiser. Strong opinions abound,
> facts are difficult to come by. The nearest I got is: "If it is like a
> pin in a hole use oil, if the surfaces are sliding use grease". I thought
> lubrication is by definition for surfaces that slide in one fashion or
> another, so grease should be used for all?
>
> Then there is the question of temperature range, molybdenum or not, etc.
> etc.
>
> Furthermore, as far as I can tell the same game that manufacturers and
> retailers play with other chemicals (e.g. degreasers) is played with
> greases. Call it automotive grease you pay X, call it a "mil-spec gun
> grease" you pay 10X. And so on.
>
> Any views here?
>
> --
> Michael Koblic,
> Campbell River, BC
>
>