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  1. #1
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    May 2018
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    5

    Replacement spindle bearings

    Does anyone know of a direct replacement for the spindle bearings for the PCNC 1100? Tormach doesn't list them for sale anymore.

  2. #2

    Join Date
    Mar 2020
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    179

    Re: Replacement spindle bearings

    Not off hand but it should be relatively easy to figure it out just by looking at the old ones. Bearings typically have their number stamped on the edge of the race. Failing that, measure the old ones and use those dimensions to source new ones. Iirc the pcnc1100's spindle was somewhat limited in terms of rpm so any off the shelf bearing will probably suffice but you could also get tight tolerance (C3?) bearings if you wanted to spend some extra dough on better parts. Just be aware that they are much more sensitive to lubrication and contamination and can generate a lot of heat if not properly cared for.

  3. #3
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    May 2018
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    5

    Re: Replacement spindle bearings

    Ok, thanks. I crashed the machine while using the superfly and it broke the pin inside the spindle that goes in the slot on the r8 collet. I was thinking I would replace the bearings while I was in there.

  4. #4

    Join Date
    Aug 2020
    Posts
    99

    Re: Replacement spindle bearings

    Document your journey! I'd love to "sit in"!

  5. #5
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    May 2018
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    5

    Re: Replacement spindle bearings

    I checked with Tormach, they don’t sell the bearings anymore, but did give good info on them:

    We no longer sell spindle bearings, no. The commercial numbers of them are 7008C/DT and 7007C/DT that can be cross referenced with other vendors.

  6. #6
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    Mar 2015
    Posts
    21

    Re: Replacement spindle bearings

    Greetings,

    Please post again once you source new bearings.

    Also eager to see what else is involved in replacing them. i.e. seals, torque settings, etc...

    Curious to know the price you get.

    $400.00 USD each from my local supplier.

    Cheers,

    Dave

  7. #7

    Re: Replacement spindle bearings

    VXB.com

    Looks like they can be had fairly cheap all the way up to not so cheap. The 1100 isn't particularly high performance, I'd bet the cheaper bearings would do the job.

  8. #8
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    Join Date
    Nov 2012
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    579

    Re: Replacement spindle bearings

    I've bought bearings from VXB for many years (for design project use, not actual mills) and always been happy.
    Only weird thing is they show up on the credit card bill as some other company name -- something like "Nation Skander" I think?

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