| Topic: |
Science > Physics |
| User: |
"Nanoworld" |
| Date: |
03 Apr 2006 01:14:26 AM |
| Object: |
sample roation at low temperature |
I want to rotate a small dist (i.e. 10mm dia.) at low temparature (e.g.
100K) in vacuum. Does anyone know a way to dot this? Any concrete
examples?
I search through various sites for mechanical components.
Unfortunately, I could not find the right mechanism for my extreme
condition.
If you happen to have any suggestions, please please let me know!!
Many thanks for your help in advance.
Yoshie
.
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| User: "CWatters" |
|
| Title: Re: sample roation at low temperature |
03 Apr 2006 06:52:28 AM |
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"Nanoworld" <murooka@pa.msu.edu> wrote in message
news:1144044866.422620.170340@t31g2000cwb.googlegroups.com...
I want to rotate a small dist (i.e. 10mm dia.) at low temparature (e.g.
100K) in vacuum. Does anyone know a way to dot this? Any concrete
examples?
I search through various sites for mechanical components.
Unfortunately, I could not find the right mechanism for my extreme
condition.
If you happen to have any suggestions, please please let me know!!
I might be missing something but I would try a small brushless motor. The
main problem I see is with the lubrication of the bearings. Try running them
dry if it doesn't have to last long. Wash all the lubricant out of the
bearings with a solvent and force air dry. Or replace the ball races with a
lump of teflon or a ceramic (eg a plain bearing). How long do the bearings
need to last? Motors and open loop speed controllers of all sizes (including
some very small ones) are readily available for use in model aircraft.
.
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