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Thread: Bandsaw ceramic thrust bearing making sparks

  1. #1
    Join Date
    Nov 2006
    Location
    Minneapolis, Minnesota
    Posts
    2,089

    Bandsaw ceramic thrust bearing making sparks

    I just aquired a used Delta 14" bandsaw. This is the first one I've ever used that had ceramic guides and thrust bearings/guides on it. I guess they're not really thrust "bearings" since they don't rotate. Which is weird because I'm seeing quite a few sparks when the back of the blade pushes against the ceramic. Is this normal? I worry sparks could get sucked into the dust collector and start a fire.

    Jason

  2. #2
    Join Date
    Oct 2006
    Location
    Bloomington, IL
    Posts
    5,957
    Yes it is normal for the Laguna guides. Hard steel hitting harder ceramic. I have not had an issue with the sparks. I use a 5hp cyclone and 5hp single stage.
    Glad its my shop I am responsible for - I only have to make me happy.

  3. #3
    Join Date
    Jun 2008
    Location
    So Cal
    Posts
    2,098
    I think I remember some blades with bumpy welds would spark,I used to to have a laguna 16 see if you can stone the back of the blade to smooth it out.Thats what i do on all my blades some of the cheapo blades need more work than others.

  4. #4
    Join Date
    Jul 2003
    Location
    Winterville, NC (eastern NC)
    Posts
    1,894
    I have the ceramic guides on my Laguna LT18 band saw. The sparks are normal. They are just very tiny sparks from the contact of the metal blade on the ceramic surface. Not enough to be a concern or problem.

  5. #5
    Join Date
    Nov 2006
    Location
    Minneapolis, Minnesota
    Posts
    2,089
    Bump.

    Anybody else?

  6. #6
    Join Date
    Sep 2008
    Location
    East Rochester, NY
    Posts
    160
    I have a Laguna 14Twelve with ceramic guides....never had a problem. HTH

  7. #7
    Join Date
    Sep 2006
    Location
    Deep South
    Posts
    3,490
    The owner's manual of my Laguna 14/Twelve plainly states that the ceramic guides will spark. If they didn't, I would be concerned that they weren't adjusted correctly.

  8. #8
    Join Date
    Mar 2003
    Location
    weaverville, ca
    Posts
    287
    sparks from my lagunas too - especially when new - used on a mm16 - no problem
    jerry
    jerry

  9. #9
    Join Date
    Apr 2012
    Location
    Austin, TX
    Posts
    2,359
    I think the individual blade is more responsible for this than the guides. We would probably all be a little surprised at how many bumps and other irregularities our blades have. Even new ones.

    Erik

  10. #10
    Join Date
    Jan 2010
    Location
    Tampa Bay, FL
    Posts
    1,756
    Laguna LT14 does it also. Never had an issue with the sparks and a 5HP cyclone.
    That whole business about the best day at work is worse than the worst day of fishing is total BS. I've seen Deadliest Catch. I've never had a day at work where my ship sank, I was thrown into 34 degree water, and watched all my co-workers drown.

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