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- Apr 14, 2014
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From the Logan FAQ's:
http://www.lathe.com/faq/index.html#_Toc95180284
2.13.What is the right size chuck for this lathe?
2.13..Logan supplied a 5” 3-jaw chuck and a 6” 4-jaw chuck for their 10” lathes. Logan supplied a 6” 3-jaw chuck and a 6” 4-jaw chuck for their 11” lathes. Larger chucks were available, but they are impractical on these lathes because the jaws would hit the bed when the chucks were opened. Larger chucks are also heavier, so they put a strain on the spindle and spindle bearings. In general, use the smallest possible quality chuck for the job.
The rule of thumb when clamping a part in the chuck is that the chuck jaws should never extend beyond the body more than 3/4". If this rule is followed an 8" chuck can easily be used on a 10" lathe. Having said that an 8" chuck is a lot of mass to swing on a 10" lathe. I have quite a number of different chucks for my 10" lathe. They range from collet chucks to 3"- 8" 3 jaw chucks, and 4" - 8" 4 jaw chucks. The most commonly used ones are 6" with 4 independent jaws. They seem to be the most versatile and accurate.