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Thread: Vacuum clamping system question

  1. #1
    Join Date
    Dec 2005
    Location
    Spring, Texas
    Posts
    578

    Vacuum clamping system question

    I'd like to set up a vacuum clamping system, mainly for router templates. I searched SMC and found a few answers, but have one specific question I couldn't find.

    If I have a tank (I think it's 5 or 6 gallons), how big should the vacuum pump be? I don't want to use a venturi system with my compressor, and have seen A/C vacuum pumps that don't cost much money. I was wondering if they would work.

    Thanks in advance for all the help I know I'm going to get.

  2. #2
    I have a 1HP pump motor on mine with 5 gal tank. But be careful here because the tank has to be designed for vacuum and those have different specs than compressor tanks. Actually a larger pump with a tank will not draw a vacuum any "better" than a smaller pump with no tank. It will just draw the vacuum faster. As with compressors, it's all about CFM.

    YM

  3. #3
    Join Date
    Dec 2005
    Location
    Spring, Texas
    Posts
    578
    Thanks for the info. The tank I have available is a compressor tank, so I'm glad I posted.

    Greg

  4. #4
    Join Date
    Mar 2005
    Location
    portland oregon
    Posts
    1,286
    I have a small maybe a 1/6" hp gast pump that will suck all the air out of my 4' long 4" abs tank I made in a minute or less. it works great on my cnc router.
    You can also make a vac table using a shopvac that will work very well that does not need gaskets and will work with more varied shapes.
    Steve knight
    cnc routing

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