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ball bearings for vacuum applications

ball bearings for vacuum applications

ball bearings for vacuum applications

(OP)
Hi everybody,
I am using ball bearings in a vacuum chamber used for coating
The bearings get damaged after a very short period of time.
Are there any special bearings that can be used in that environment where no oil is tolerated.
Thanks

RE: ball bearings for vacuum applications

Is it possible to use a Nonmetallic plain sleeve bearing? To determine this you will have to calculate loads and shaft hardness. Check http://www.mcmaster.com for a bearing to fit your application.

RE: ball bearings for vacuum applications

Hello

There are a couple of lubricants on the market that have been developed for vacuum use. I have used both Krytox and Torrlube. Your local vacuum vendors should be able to supply these.

If your coating is done at high temperature, another possibility may be to try Dichronite - this is essentially a molydisulfide coating that is applied to the ball (or other style) bearing. (Bearing must be degreased first). I currently have ball and needle bearings running in vacuum systems with all of the above lubricants.

I am not aware of any ball bearings specifically made for vacuum use, If you happen to come across some I would certainly appreciate hearing about them.

Thanks

RE: ball bearings for vacuum applications

(OP)
Thanks for your answers.
I found a company that makes those bearings exactly the way you describe it
www.championbearings.com
Thanks.

Marc

RE: ball bearings for vacuum applications

If the bearings are damaged due to deposits instead of wear, you be able to clean them in a solution such as vineager on a regular basis.

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