9A inner thrust bearing
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  1. #1
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    Default 9A inner thrust bearing

    I'm chasing a chatter problem on my 9A & pulled the spindle yesterday to clean out the shim slot's .when I did teh rebuild , new felts, & cleanup & paint I did the outer thrust bearing upgrade . I'm wondering if the inner thrust bearing could be out of spec , I didn't replaced it when I did the rebuild , could it be adding anything to my chatter problem ? have folks been replacing the inner thrust bearing ? if so with a like ball bearing , or upgrading to a needle bearing of sorts ?
    tks
    animal

  2. #2
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    you should have a 3 piece ball thrust bearing now..(two grooved races, cage w the balls)

    there is nothing i would consider an upgrade to the original arrangement.
    you can replace it with a new one....but the originals are pretty tough if clean and no visible damage and rolls freely without roughness.

  3. #3
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    Good deal , thank you
    animal

  4. #4
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    I replaced my fiber washer with the bearing set - no difference

  5. #5
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    I replaced my fiber washer with a hardened washer, radial roller bearing and another hardened washer. It made a big difference in the right to left movement of the spindle because the take up nut nut can be tighter. I wish I had written down the order number for the parts but someone else will likely be able to provide them. It is the best low cost up grade to a South Bend 9" lathe there is.

  6. #6
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    I recently purchased 3 sets for some of my 9A and 10Ks. Here’s the McMaster Carr info:




    Sent from my iPhone using Tapatalk

  7. Likes garyphansen liked this post

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