1. #1
    Ok Folks, Lead screw support bearings (fixed end) ... a pair of single row angular contact or a solo double row bearing??? that is the question.

    Answers, as simple as possible but with reasons please.
    Tim G-C

    I disapprove of what you say, but I will defend to the death your right to say it.

    (attrib. Voltaire but written by Evelyn Beatrice Hall "The Friends of Voltaire" 1906)

  2. #2
    Tim,
    a pair of single row angular contact bearings as you can eliminate any backlash. A single (inexpensive) double row bearing may or may not have backlash problems.
    Art

    AKA Country Bubba
    (Older than Dirt)

  3. The Following User Says Thank You to C_Bubba For This Useful Post:


  4. #3
    I'm interested in the answer to this as I am at the design stage too
    do you have a picture for the hard of thinking?
    there are 10 sorts of people in the world
    them as understand binary
    and thems as doesn't

  5. #4
    Quote Originally Posted by mmcp42 View Post
    I'm interested in the answer to this as I am at the design stage too
    do you have a picture for the hard of thinking?
    Have you checked your blog ?

    Phil

  6. #5
    OK thanks for that ... I was leaning toward a pair of singles as that seems to be what most folks opt for ...
    Tim G-C

    I disapprove of what you say, but I will defend to the death your right to say it.

    (attrib. Voltaire but written by Evelyn Beatrice Hall "The Friends of Voltaire" 1906)

  7. #6
    Quote Originally Posted by M250cnc View Post
    Have you checked your blog ?

    Phil
    indeed I have
    would still like a picture though!
    there are 10 sorts of people in the world
    them as understand binary
    and thems as doesn't

  8. #7
    iv got single a/c bearings on my x axis screws at the moment,,,, im having problems with them being to tight on the shaft (my mistake) if i put to much tension on them i wont be able to back them off :( and to take them off the shaft i will damage them. anyway they have been a pain in the jacksy

    iv bought two double row A/C's to put in (when i find the time) the only disadvantage iv spotted with the double row is there are fewer balls so lower stress raiting... i cant see this being a problem, they will have a very easy life on a router

    if your getting any backlash worth mentioning with double row a/c I'd suspect that some cheeky sod has sold you double row deap grove bearings as angular contacts or they are duds

  9. #8
    Cheers, I'll bear those points in mind ...
    Tim G-C

    I disapprove of what you say, but I will defend to the death your right to say it.

    (attrib. Voltaire but written by Evelyn Beatrice Hall "The Friends of Voltaire" 1906)

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