Fusor Forums

Same kit is about the same price at lesker. https://www.lesker.com/newweb/vacuum_pu ... er_eco.cfm

With a diaphragm backing pump its a lot cheaper than a oil pump, the turbo by itself sells for about $6k.

How much do you have in them? Start them low and let them find their own level. Prepare to deal with shipping if you do and dont forget to put crating expenses in the listing.

Sell them on ebay. There is someone trying to sell a couple of them on ebay for a crazy high price, they will never sell. They are worth probably $1k a piece in an unknown state without a controller.

If they are maglev there is zero chance you will get them running by by building a controller.

Dont use steel, it is a mess. Stainless and aluminum is best. You can get nice rounds of aluminum tooling plate from S&S machine, I have used them a couple times: http://www.sandsmachine.com/alumweb.htm

I think I fried bearings on a varian pump by running it without cooling and it was connected to a SEM, so no gas load. So watch it, I would at least put a muffin fan on it like in the manual.

On deposition system all the power feedthroughs are covered with a cap that kind of looks like a copper pipe end cap with a hole in the center. The conductor passes though and the concave side covers a portion of the insulator. This creates a "shadow" and prevents material from coating the insulator...

Manual is here, its kind of awful, I use a similar vintage pump in my SEM. https://fusor.net/board/viewtopic.php?t=8021 Pumping unit turns on a relay that can control the fore pump and the turbo I believe. Heater is for baking out, rarely used. First thing I would do is change the oil, it uses the s...

Im betting you dont have as low foreline pressure as you thing you do. The nt-50 will light fail if the drive does not see fast enough acceleration and that is usually from too high of pressure.

Get a chunk of leaded glass if you are having x-ray problems. For you and the camera.

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 ki...