Tim Wescott wrote:



I think I'd find the dimensions for the tapers in question and measure
them to make sure. Calipers plus whatever round crap you have lying
around plus cleverness should give good enough measurements to tell one
from t'other.

I am beginning to think, that there is a possibility, that I might in fact have
a dividing head with a Morse Taper #2 in the spindle, instead of the claimed B&S
taper. Which means that the Enco catalogue was wrong, and the manual for the
dividing head is wrong also.

From http://www.gizmology.net/tapers.htm I found:

Morse Tapers:

#2 minor diameter: 0.572"
major diameter: 0.700"

B&S Tapers:

#7 minor diameter: 0.600"
major diameter: 0.725

I measured the diameter of the spindle hole at the opening, and it is 18 mm (as
stated in the manual), which is 0.708", so I would think it is made for a #2
Morse taper and not for a B&S taper, at least based on this measurement. I
talked to Enco today, from where I bought the dividing head, and they were not
very helpful. They simple denied the possibility that they might have sent me a
dividing head with a Morse taper instead of a B&S taper. A B&S taper will never
properly fit that hole, no matter what Enco claims the taper in the hole is.

As it turns out, there is a somewhat serious mistake in their catalogue. Take a
look at this page again: http://www.use-enco.com/CGI/INPDFF?PMPAGE=261

Take a look at the "Head Stock ID Taper" for Model #325-1470 (bottom left of the
page). It says "3MTB&S". Obviously, this is nonsense.

Strangely, exactly the same mistake appears in the MSC catalogue for the same
tool. Take a look at http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=1507 (lower
right of the page)

I do not know how to measure the minor diameter of the taper inside the spindle,
but I also have a center that fits into that spindle, and I would think, that it
should not be too difficult to determine what kind of a taper that center has.
Enco wants me to send the dividing head back to them. It might be easier to
send that center back, and have them measure that.

Abrasha
http://www.abrasha.com