CNC Spindles: Air-Cooled Versus Liquid-Cooled

      Liquid-cooled spindles are a little more complicated. Is it worth it? January 14, 2008

We are a residential custom cabinet company about to pull the trigger on buying our first CNC machine. We expect our machine to run 6 to 8 hours per day 5 days per week. Primary use of the machine will be nested based panel processing. I would like to hear opinions from users about air cooled or liquid cooled spindles.

Forum Responses
(CNC Forum)
From contributor K:
We have 11 top of the line CNCs and 3 are liquid cooled. The air cooled spindles have outlasted the liquid twofold. I'm not sure why they have lasted longer, but I do believe that air speed from the dust collection may be the key.

From contributor M:
I have purchased a few and worked on dozens of the machines. My humble opinion is if the liquid cooled spindles cost you any extra money, go with the air cooled. I have never seen a clear cut advantage to liquid cooled, but I do know it's extra maintenance and something else on the machine that can go wrong without adding any obvious value. Again, my opinion based on my experience.

From contributor A:
I work with both types. Never had issues with our liquid cooled spindles. I have rebuilt a few of our air/fan cooled spindles at $2600 each. A few times the cooling fan needed replacement as well. If you feed your router bits at the correct feeds, they should be cool to the touch. If you under feed them, then you will cause the heat to transfer into your spindle, causing premature wear.

From contributor T:
We have air cooled spindles. About the only time they overheat and shut themselves off is if we are running a lot of slotwall. The entire spindle gets about 1/2" of dust caked onto it after only a few sheets and it doesn't get cooled properly. Just need to blow off the dust, then no problem. Any other routing is no problem.

Would you like to add information to this article?
Interested in writing or submitting an article?
Have a question about this article?

Have you reviewed the related Knowledge Base areas below?
  • KnowledgeBase: Knowledge Base

  • KnowledgeBase: Computerization

  • KnowledgeBase: Computerization: CNC Machinery and Techniques

    Would you like to add information to this article? ... Click Here

    If you have a question regarding a Knowledge Base article, your best chance at uncovering an answer is to search the entire Knowledge Base for related articles or to post your question at the appropriate WOODWEB Forum. Before posting your message, be sure to
    review our Forum Guidelines.

    Questions entered in the Knowledge Base Article comment form will not generate responses! A list of WOODWEB Forums can be found at WOODWEB's Site Map.

    When you post your question at the Forum, be sure to include references to the Knowledge Base article that inspired your question. The more information you provide with your question, the better your chances are of receiving responses.

    Return to beginning of article.

    Refer a Friend || Read This Important Information || Site Map || Privacy Policy || Site User Agreement

    Letters, questions or comments? E-Mail us and let us know what you think. Be sure to review our Frequently Asked Questions page.

    Contact us to discuss advertising or to report problems with this site.

    To report a problem, send an e-mail to our Webmaster

    Copyright © 1996-2020 - WOODWEB ® Inc.
    All rights reserved. No part of this publication may be reproduced in any manner without permission of the Editor.
    Review WOODWEB's Copyright Policy.

    The editors, writers, and staff at WOODWEB try to promote safe practices. What is safe for one woodworker under certain conditions may not be safe for others in different circumstances. Readers should undertake the use of materials and methods discussed at WOODWEB after considerate evaluation, and at their own risk.

    WOODWEB, Inc.
    335 Bedell Road
    Montrose, PA 18801

    Contact WOODWEB

  • WOODWEB - the leading resource for professional woodworkers

      Home » Knowledge Base » Knowledge Base Article