Hardinge Cataract Quick Change cone bearings - Page 2
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  1. #21
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    Hi Larry,
    good info there, makes sense, is the long side of the rectangle in line with the spindle axis, or perpendicular? I will have to take another look at the spindle key area, but it defiantly was not invisible, looked like welded to me, but could have been a really lousy peen job.. Ill look again.
    Thank you,
    Greg

  2. #22
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    Quote Originally Posted by Greg Dawson View Post
    Hi Larry,
    good info there, makes sense, is the long side of the rectangle in line with the spindle axis, or perpendicular? I will have to take another look at the spindle key area, but it defiantly was not invisible, looked like welded to me, but could have been a really lousy peen job.. Ill look again.
    Thank you,
    Greg
    In mine I think it was diagonal. The head of the key is visible in the photo of my 'exploded view' above.

  3. #23
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    Ok, I see it there, looks like maybe .187-.250 square, Mine looks nothing like that, much larger and uglier.

  4. #24
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    I got the early (Ser. No. 289) 59 head out, along with some later lever closer adjusters and took pictures. This head is in amazing condition, still with original paint. The previous owner took it apart and I have never put it back together, making it handy for taking pictures.

    The key in the spindle is about 1/8" x 1/4" x .05". The keys in the late model adjusters are about 1/8" x 5/16" x .05". I got a picture of the hole (no. 20 drill size) in an earlier adjuster that has the key missing so you can see the four notches. I suppose the notches could be produced by driving a hardened tapered square punch into the hole while the part was still soft.. And one of the adjusters has enough rust on it to see the top of the key which looks square after peening into the notched hole. I took a picture of the spindle showing the bearing surface behind the key notch so that you can see there is no visible sign of the top of the key. That late adjuster key is probably still available from Hardinge, but the stem is too short for use in a spindle. The part number is 60000493 (old number 6-493). The stem is .153" dia. x .347" long and the key is .122" x .310" x .058". To make a new spindle key, I would use those key dimensions and make the stem fit the existing hole.

    Larry

    dsc01959.jpg dsc01962.jpg dsc01960.jpg dsc01961.jpg
    Last edited by L Vanice; 06-13-2019 at 08:14 AM.

  5. #25
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    Pictures of the collet closer "adjusting nut," as Hardinge calls it. Note how the end of the key is bevelled on the installed keys, but not on the unused keys.

    Larry

    dsc01964.jpg dsc01966.jpg dsc01963.jpg dsc01965.jpg dsc01967.jpg

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