Turbopump Bearing Kits - anybody have experience?

Every fusor and fusion system seems to need a vacuum. This area is for detailed discussion of vacuum systems, materials, gauging, etc. related to fusor or fusion research.
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ian_krase
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Turbopump Bearing Kits - anybody have experience?

Post by ian_krase » Fri Sep 06, 2019 8:15 am

Turbovacuum and a few other sources sell replacement bearing kits and specialized tool kits for turbo pumps.

I'm curious whether anybody has had any success using these kits, and also whether your pump needed balancing once the bearings were replaced and if so how you did that.

John Futter
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Re: Turbopump Bearing Kits - anybody have experience?

Post by John Futter » Fri Sep 06, 2019 9:19 am

ian
I have replaced bearings and transferred armatures from one pump to another
no failures yet --except for varian 550 units --just bad design

ian_krase
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Re: Turbopump Bearing Kits - anybody have experience?

Post by ian_krase » Sat Sep 07, 2019 11:53 pm

What about the smaller Varian pumps? Do you need special tools

Do you need to re-balance them?

Jerry Biehler
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Re: Turbopump Bearing Kits - anybody have experience?

Post by Jerry Biehler » Sun Sep 08, 2019 12:41 am

I replaced one in a large 1000l/s pfeiffer, pretty easy. I found a company that made Steel/SiC bearings and selected one the right size. The only difference was the plastic keeper for the balls was different but I was able to transfer from the old to the new.

Alpine Bearing makes a lit of bearing kits for a fraction of the price the vacuum shops sell them for. You should not have to rebalance.

https://alpinebearing.com/bearing-categ ... urbo-pump/

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