Results 1 to 6 of 6

Thread: What size vacuum pump do I need

  1. #1

    What size vacuum pump do I need

    Hi am new to lathe vacuum pump setup for a Laguna Revo 1836 lathe. I have looked at a 71litre/minute 2 stage pump but not sure if this has enough volume for a vacuum chuck.

  2. #2
    Join Date
    Jul 2016
    Location
    Lebanon, TN
    Posts
    1,719
    That's around 2.5CFM, that would be the minimum I would go with. The more volume you have, in the vacuum, the more it can deal with leaks and porous wood.

    My cheap $49 (Amazon) pump pulls 3.5CFM (99LM) and that worked fine.

    I would guess the larger the chuck contact area, the more room there is for leaks, so extra CFM can help.

    I'll be setting up my 24-36 in the next week or so, it's sitting here in a box, so I'll be setting the vacuum chuck up on that.

  3. #3
    Join Date
    Jun 2017
    Location
    Murfreesboro, TN
    Posts
    7
    Hey are there any more pumps at that price? We live in Murfreesboro so we don't live too far apart.

  4. #4
    Join Date
    Jul 2016
    Location
    Lebanon, TN
    Posts
    1,719
    Quote Originally Posted by Don R Davis View Post
    Hey are there any more pumps at that price? We live in Murfreesboro so we don't live too far apart.
    This was the one I bought https://www.amazon.com/dp/B00BXMRP4I/ref=dp_cerb_1

    It's an oil model and does puke a bit of (mineral?) oil mist from the pump exhaust, but I just lay a piece of kitchen towel over this and it absorbs it.



    This is my setup with vacuum gauge and bleed valve.


    I also just bought a reconditioned Gast pump off eBay for $51. This is an oiless pump and pulls about 3CFM. I haven't had chance to try it yet.

  5. #5
    Join Date
    Jun 2017
    Location
    Murfreesboro, TN
    Posts
    7
    Thank you Chris. When you try it out please let us know your opinion. "Good or Bad"

  6. #6
    Join Date
    Nov 2009
    Location
    Peoria, IL
    Posts
    4,444
    Quote Originally Posted by ChrisA Edwards View Post
    That's around 2.5CFM, that would be the minimum I would go with. The more volume you have, in the vacuum, the more it can deal with leaks and porous wood.

    My cheap $49 (Amazon) pump pulls 3.5CFM (99LM) and that worked fine.

    I would guess the larger the chuck contact area, the more room there is for leaks, so extra CFM can help.

    I'll be setting up my 24-36 in the next week or so, it's sitting here in a box, so I'll be setting the vacuum chuck up on that.
    I guess you are talking about leaks in the lines? Leaks at the work piece make the whole system useless (including porous wood). I bought the smallest pump I could find. There is very little air volume needed for a couple feet of house and the chuck itself.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •