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Help me identify a drill chuck taper.

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  • Help me identify a drill chuck taper.

    Hi
    I have been given a Tauco Bench drill recently. The chuck however was damaged so I will be replacing it. However I don't know what taper the chuck arbour is.
    The old chuck is a Jacobs and has no. 6A special stamped on it.

    I have tried a chuck from my milling machine with a B16 taper on it but that doesn't seem to fit too well.

    Can anyone help me identify the taper on the drill - are there measurements which would help me identify it?

  • #2
    http://www3.telus.net/public/aschoepp/tapers.html

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    • #3
      The 6A is obsolescent, but it will probably be a standard Jacobs taper. What are the large and small diameters and length of taper?
      Jim H.

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      • #4
        Excellent - thank you very much

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