On 2010-07-18, cncmillgil wrote:
On Jul 17, 6:32*pm, "DoN. Nichols" wrote:

[ ... ]

* * * * Which kind of keyless chuck? *An Albrecht should be very
precise. *Some early designs of keyless chucks are terrible -- the kind
which used to be on hand held electric drills, or on eggbeater drills.
(Do they still make those things?)

* * * * And another consideration -- are you sure that it is runout, and
not simply that the quill is loose in the headstock casting? *These
don't have a clamp to hold the quill extended -- which can also be used
to reduce free play, so they can be rather loose.

[ ... ]

My mistake. Its a jacobs taper holding the chuck on the spindle. Had
a J/T M/T brain fartg

Most drill presses have both a MT (in the spindle) and a JT (at
the chuck end of the arbor), so both at the same time are possible.

However -- this looks very much like one which I saw at a
hamfest which had a Jacobs taper machined directly onto the end of the
spindle.

Except that the weight listed in the auction (about 100 lbs) is
much heavier than what I saw at the hamfest.

Can't find any markings on the keyless chuck. Probably screwed up
jaws?

Does the chuck look like the one shown in the last photo in the
auction you pointed to below? If so -- runout is a way of life with
those. The jaws are spaced by compression springs in holes drilled in
the meeting faces of the jaws. It does not take long before one of the
springs gets warped, and forces two jaws farther apart, leaving an
off-center grip for the drill bit.

Also -- some of that sort are tightened by screwing onto a
threaded shaft -- but you could tell that by adjusting the chuck to
maximum size. If you don't see threads above the chuck body, it is
likely a Jacobs taper -- and the pickle fork pairs are called into
service.

Anyway -- the suggestion of a loose qull in the headstock is
eliminated by the photos here -- this has the split headstock with the
clamp bolt to lock the quill at a given extension.

The OD of the chuck seems to run fine & the spindle is not
loose. It appears this machine did not have much use.
Just so happens theres one ebay just like mine, only that ones black.

What color is yours? Black was common for a *long* time.

Or is it possible that yours was repainted? Check around the
edges of the badge on the front belt guard for traces of paint applied
after the badge was installed.

Sometimes, shops painted all of their tools the same color for
whatever reason.

Maybe older? Mine has a craftsman 1/3hp moter.
http://cgi.ebay.com/ws/eBayISAPI.dll...m=330451891996

Maybe. The motor shown here is a 1/3 HP one as well. Pity that
the serial number is partially covered with grease, so you can't compare
them, assuming they are the same maker and model number. The one shown
is certainly an old one.

Good Luck,
DoN.

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