re:re:Re: Stepper motors and increased Amps

Roman wrote:

>I also have some larger and smaller 23 frame.
>I *think* the 2" is a two stack, I have a few
>1.25inch 23's and some about 3 inchers, and I
>have seen them about 4" which would be 4 stack?

Roman, List,

Take a look at:

http://www.electrosales.com/warner/New%20Product/kml.htm

If you scroll down you'll se a 'cutaway' view of a TRIPLE stack motor.
(You'll notice that it looks like six 'rows') But it is called a
triple stack. The motor at the top of the page is a 23 single stack.

Click on 'dimensional drawings' or go to:

http://www.electrosales.com/warner/New%20Product/sem_ht04.html

The top drawing is for 23's, and the bottom is for 34's. These are
sometimes called 60 and 90 (referring to their metric faceplate size,
just as 23 and 34 refer to their inch faceplate size). You'll see
there are 3 different dimensions for length. These correspond to 1,2
or 3 stacks (which will LOOK like 2,4, or 6 'rows' inside).

It is easy to tell 23, 34, 42 motors apart (without anything else in
the picture to "help") if you look at the relationship of the
machined mounting alignment "ring" compared to faceplate size. The 23
has a 1.5 inch circle on a 2.25 face. The 34 has a 'ring' that is
nearly the size of the motor face. The 42 looks like the 23, but
there is more space between the alignment ring and the faceplate
edge. This can help in determining a stepper size for sale in an
auction, for example. Or from a distance at a store.

The 1-1/4 inch long 23 will properly be called a 1/2 stack, and will
look like a single 'row' inside. (If you opened it, but you WON'T,
right?!) Actually, it can be fun to open a motor YOU WON'T BE USING,
just to see the 'guts'. Yes, I was a terror with a screwdriver in my
younger years :-) These 1/2 stack 23's are sometimes seen in optical
assemblies, and other lightly loaded, specialized apps. They are not
especially common, IMO.

>Different manufacturers might have different
>stack sizes?

Yes, slight variations(+or- .5) are common, but it will be easy
to "spot" whther it's 1,2 or 3 stack from a distance, once you have
seen a few...

Hope this helps.

Ballendo