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Vacuum pumps

10/2/21       
Jr Lee

I am asking to see what you guys are doing for vacuum pumps for your CNC machine. I have a 5 X 9 table and a 17KW (23HP) vacuum pump/blower but my RPC isn't quite strong enough to start it so I need ot go down in HP. I have read that the rotary vane pump is best but are any of you using the side channel pumps? They are more afforable but what about performance? Can they do the job?
Also what size pump are you using, CFM, HP
I appreciate all of your input.
Jr Lee

10/4/21       #2: Vacuum pumps ...
Quicktrim

I started with a 10 hp Becker VTLF 250
Worked well for me for a while.

Then went to a 20 HP liquid ring decker, it pulled a much harder vacuum and I seldom loose parts now.

I am in the Denver Colorado area so I am fighting about a mile above sea level so I needed the additional pull.

The Becker has low hours and I am moving my shop next month to a larger space if anyone wants to buy it .

10/5/21       #3: Vacuum pumps ...
Scott

I would look for a Becker VTLF 250 like the pump Quicktrim had, they are work horses and will last for ever, just need to change the vanes once in awhile. Vacuum is a tool just like a lot of other tools in your shop, I read all these forums about people wanting/needing massive vacuum pumps or 2 or 3 working together. If you need that much vacuum you obviously don’t know how to use that tool. A 10 hp is more than sufficient for a 4x9 table unless you are cutting pencil blanks. There are all kinds of tricks to maximizing your vacuum. Something as simple as 6mm poly taped to a piece of cardboard, if you can’t divide your table into zones, throw the poly and cardboard in the areas you are not using. For just about all cabinet parts you can hold down no problem. You might have to onion skin a few of the very small parts. Go to a thinner spoil board, start out with 1/2 mdf and paint the edges or edgeband the edges. One very important thing is you have to make sure your spoil board is clean, if you are setting new material on sawdust, it will move.

10/8/21       #4: Vacuum pumps ...
Derrek

Second the Becker 250. I have also run the Busch or Bosh can’t remember the name. Worked great and have no wear parts like the Becker has

10/8/21       #5: Vacuum pumps ...
Jr Lee

Website: http://leecabinets.com

I appreciate all of the input. Thanks much.
Anyone using a regenerative blower/vacuum pump? I understand they aren't as good a performer as a rotary vane but was curious if anyone is having any success with them.
Jr

10/19/21       #6: Vacuum pumps ...
Salce  Member

Website: http://www.cncsparetools.com

one of our US customers is using dry vane vacuum pump 1x Mo Bo Luo ZYBW 250F and x 3 Becker VTLF 250’s, he said the Mo Bo Luo pump also worked well as Becker,
We(Rico) supply the Becker vanes and filters.

12/9/21       #7: Vacuum pumps ...
Acctek  Member

Website: https://www.acctekgroup.com/index.html

Rotary vacuum pump: Use the rotating movement of the rotor in the pump chamber to suck, compress and discharge gas.


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