Re: [CAD_CAM_EDM_DRO] re:Extra Small stepper motors

Thanks, Ballendo

I have the dimension sheets for the 23 and 32...got them from Warner Elec.
I'd still like to get the specs on the 11,17 and 42 size motors.

Would like whatever info I can get on those servo's you mentioned too as I
can find a use for both items.

Smoke

>Hybrid steppers (another name for what we on this list commonly mean
>when we talk about steppers) come in several sizes which roughly
>relate to body diameter/ Faceplate size. The typical range is 11
>(about 1.1 inches diameter),17 (1.7 inches), 23 (2.3 inches, commonly
>used for sherline retrofits), 34 (3.4 inches), 42 (4.2 inches,
>typically used on bridgeport and BP retrofits).
>
>These sizes also come in different lengths (within each size) which
>correspond to the internal iron core makeup, and are thus referred to
>as 'stacks'. As in a 34, single stack motor; 23 triple stack motor.
>One to three stacks is common, but I personally have not seen double
>or triple stacks in the smaller sizes you may need.
>
>From a reply post, it appears that a size 11 may fit. I don't think
>you will be able to generate the torque needed for any sort
>of 'cutting' movement from this size STEPPER. A high TPI may help
>some. MAY BE ok for 'positioning' and then "lock" the compound with a
>solenoid... BUT,
>
>A SERVO motor in this size will probably be a much better choice, at
>the expense of some control complexity... 1 inch diameter servo
>motors can be had with higher REAL torque than steppers of similar
>size.