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- Dec 25, 2011
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Calixt0,
The largest chuck that you can realistically use on a 10" lathe is about 8". The figures for maximum size of work piece that you can hold on the OD with a given chuck depend upon which way that you have the jaws turned (4-jaw independent or 3-jaw scroll with 2-piece jaws) or which set of jaws you are using (3-jaw scroll with solid jaws). Assuming that you have the correct jaws or the correct jaw orientation set up, and assuming that the jaws aren't hitting the bed, it depends on how long the jaws are and what the length (radial dimension) is of the tallest jaw tooth. But you don't want more than about 1/3 of the jaw length hanging out in the breeze because the more that it sticks out, the more it will tend to cock and the more likely you are to break out the slots in the chuck body. So whether the correct maximum diameter figure for a 6" chuck is 6.0", 6.3" or 6.6" will depend entirely upon the jaw geometry.
The largest chuck that you can realistically use on a 10" lathe is about 8". The figures for maximum size of work piece that you can hold on the OD with a given chuck depend upon which way that you have the jaws turned (4-jaw independent or 3-jaw scroll with 2-piece jaws) or which set of jaws you are using (3-jaw scroll with solid jaws). Assuming that you have the correct jaws or the correct jaw orientation set up, and assuming that the jaws aren't hitting the bed, it depends on how long the jaws are and what the length (radial dimension) is of the tallest jaw tooth. But you don't want more than about 1/3 of the jaw length hanging out in the breeze because the more that it sticks out, the more it will tend to cock and the more likely you are to break out the slots in the chuck body. So whether the correct maximum diameter figure for a 6" chuck is 6.0", 6.3" or 6.6" will depend entirely upon the jaw geometry.