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Forum sponsored by Allendale Jan 24th

Strange (to me) chuck jaw design.

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Dave Halford27/01/2020 21:02:50
559 forum posts
5 photos

They'll fit mine too.

I've just got the hard jaws on my 61/2", they seem to be a bit touchy on positioning as you have to have all three numbers matching. Number 3 position, number 3 tee nut, number 3 jaw otherwise they go well out of center.

old mart27/01/2020 22:58:04
1085 forum posts
113 photos

I have lots of the serrated jaw sets, some were for larger chucks. You can get larger 1/16" serrated jaws to fit if you make custom tee nuts with the threads and pitch to suit the bigger jaws. the edges of the jaws where the serrations are may have to be narrowed slightly. I also have two sets of hard jaws, one standard and one a size larger. They did not run very well, and were slightly bellmouthed, so they got ground and run dead true now. I also had to number them to match properly. The underside of the larger ones had to be narrowed slightly, and as they are hard, I used a solid carbide end mill on them.. You sometimes get job lots of used ones on ebay really cheap, which is where mine came from, some well used and some nearly new.

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