I have been looking for a nice used vacuum pump, but haven't found something at the price point I want. I found this precision scientific pump https://www.ebay.com/itm/Precision-Scie ... rk:13:pf:0
It says it does pump down below 100microns, so that would be pretty much enough to power the secondary pump (diff or turbo). What concerns me is oil leakage, which I think is due to the seal in the oil reservoir, which would be easy to repair. However, I don't know if it's too risky. Opinions?
Vacuum Pump
- Richard Hull
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- Real name: Richard Hull
Re: Vacuum Pump
At 31 microns, it is OK. I have a precision 5CFM On my fusor that has only had 3 refills in 14 years and it still hits 10 microns. They are good pumps, right up there with Welch and Leybold and Edwards. If the oil is seeping from the oil reservoir, it is and easy fix. If it from the rotory shaft seal, a minimal rebuild kit would be in order. The price seems right. postage may be stiff.
Richard Hull
Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
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- Posts: 104
- Joined: Sun Feb 05, 2017 6:00 pm
- Real name: Pablo Llaguno
Re: Vacuum Pump
Pump arrived and it didn't disappoint.
At this point, it probably has 2 hours of running with a synthetic vacuum pump oil I got for $8 locally. At the head, with my MKS901p gauge, it reads 2 microns in less than 5 minutes. I got a winner
At this point, it probably has 2 hours of running with a synthetic vacuum pump oil I got for $8 locally. At the head, with my MKS901p gauge, it reads 2 microns in less than 5 minutes. I got a winner