RADIAL DRIVE # RC, what the heck is it?
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  1. #1
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    Default RADIAL DRIVE # RC, what the heck is it?

    Spotted a 1" c'bore (w pilot hole) having that for a shank.

    Specifically Eclipse 402-3259

    What is it? Can't seem to find any info online.

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    Pics please - often it's the only way.

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    Eclipse 402-3259

    eclipse-402-3259.jpg

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    It is a counterbore looking for a driver shank. I think the radial drive shank never became popular. I have dozens of Eclipse counterbores and the matching drivers and pilots. All of mine are what I call a tangential pin drive, but Eclipse may have had their own name for it.

    Larry


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