If you're asking me, I have no clue. And if you called a hydraulic oil
company and talked to their top engineer, I'm reasonably sure they
would have no clue, either.
If you want to talk about what properties you want in a cutting oil or
other cutting fluid, I can offer the basics. But it's a tedious
subject and I'm not going off on it unless you want to get into it.
On Mon, 25 Sep 2017 18:28:58 -0700 (PDT), " firstname.lastname@example.org"
Actually Dan, hydraulic oil makes lousy cutting oil, not even close to
being 90% as good as the best possible cutting oils or coolants.
Lubricating oils in general make lousy cutting oils. In fact, when
using water soluble cutting oils in machine tools the lubricating oils
used in those machine tools for the ways and ballscrews contaminate
the coolant and cause it to be much less effective in preventing
cutting tool wear as well as proper chip formation. This is the main
reason why I use oil skimmers to remove tramp oils from the coolant
used in my machine tools.
On Tuesday, September 26, 2017 at 11:54:32 AM UTC-4, email@example.com wrote:
>Any thing is better than nothing. Your hydraulic oil is not going to be the best possible, but will probably be about 90 % of the best possible oil/coolant.
Thanks for the correction. For years I have used what ever is handy including ATF. And believed it was much better than nothing.
On Tue, 26 Sep 2017 12:29:43 -0700, firstname.lastname@example.org wrote:
With all of the stearin in it, it won't wick by capillary action. When
you take the stearin out you're left with lard oil -- which has a
decent set of properties (and a very long history) as a cutting oil.
This doesn't answer your question but it's a good, concise explanation
of the chemistry of fats and oils.
The strange traditional names indicate their sources, for instance
'capr..' refers to a goat.
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