Motor shaft mounted chuck

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Subject Author Date
Motor shaft mounted chuck Russ Meredith 04-13-2008
Posted by Pete Keillor on April 13, 2008, 7:06 am
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On Sat, 12 Apr 2008 21:22:49 -0700, Russ Meredith

>I bought a used Fisher Scientific overhead lab mixer. The mixer motor
>is a rebranded Bodine gear motor with a direct drive output shaft and
>a gear reduced output shaft. The mixer came without a drill chuck.
>
>Each shaft is .315 "inch (5/16") diameter by 1" L . I want to
>mount a 3/8 or so drill chuck on the direct drive shaft without adding
>too much length.
>
>Originally these mixers were equipped with a shaft mounted chuck held
>in place with setscrews.
>
>I don't know what the chucks are called so my searches come up with
>all kinds of taper mounts. Does anyone know what these chucks are
>called and where I might buy one.
>
>The chuck needsto be hobby grade.
>
>Thanks in advance
>
>Russ
>
You can get a replacement from Fisher or VWR, or easily make an
adapter if you have a lathe and a used chuck. I don't know the cost
of the chucks used, but they are pretty cheesy. If you only have to
mount one mixer shaft, you'll get more concentric running by just
turning a rigid coupling to fit both shafts.

Pete Keillor

Posted by Don Foreman on April 13, 2008, 1:29 pm
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On Sat, 12 Apr 2008 21:22:49 -0700, Russ Meredith

>I bought a used Fisher Scientific overhead lab mixer. The mixer motor
>is a rebranded Bodine gear motor with a direct drive output shaft and
>a gear reduced output shaft. The mixer came without a drill chuck.
>
>Each shaft is .315 "inch (5/16") diameter by 1" L . I want to
>mount a 3/8 or so drill chuck on the direct drive shaft without adding
>too much length.
>
>Originally these mixers were equipped with a shaft mounted chuck held
>in place with setscrews.
>
>I don't know what the chucks are called so my searches come up with
>all kinds of taper mounts. Does anyone know what these chucks are
>called and where I might buy one.
>
>The chuck needsto be hobby grade.
>
>Thanks in advance
>
>Russ

I'd get a 3/8" keyed chuck with 3/8-16 or 3/8-24 threaded mount, about
$12 to $15 at Enco. Then make an adaptor out of 3/4" round barstock
with suitable threads on one end and a 5/16" or .315 (or whatever)
hole and setscrew(s) on the other. It'd add maybe 3/4" to 1" of
length.

Anyone with a lathe could make this for you in a few minutes. I'd do
it for a sixpack.


Posted by Russ Meredith on April 14, 2008, 3:21 am
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On Sat, 12 Apr 2008 21:22:49 -0700, Russ Meredith

>I bought a used Fisher Scientific overhead lab mixer. The mixer motor
>is a rebranded Bodine gear motor with a direct drive output shaft and
>a gear reduced output shaft. The mixer came without a drill chuck.
>
>Each shaft is .315 "inch (5/16") diameter by 1" L . I want to
>mount a 3/8 or so drill chuck on the direct drive shaft without adding
>too much length.
>
>Originally these mixers were equipped with a shaft mounted chuck held
>in place with setscrews.
>
>I don't know what the chucks are called so my searches come up with
>all kinds of taper mounts. Does anyone know what these chucks are
>called and where I might buy one.
>
>The chuck needsto be hobby grade.
>
>Thanks in advance
>
>Russ
>
Thanks for all the good advice. One of your own is making a shaft
mounted chuck for me. This is better then McMaster Car or Enco.

Russ

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