Re: Stepper motor pullies

Hi John,

I've got a bunch of 16mm ballscrews with a 12mm shaft at the motor
end and 10mm shaft at the floating end. I'm using Item aluminium
extrusions for the framework and they have a particular profile that
has a 40mm hole in the center which would make for a convienient
bearing block if I could fit the bearings into it.

I've also got a box of assorted bearings, but I doubt any will be AC,
but is there any way of telling ? (most have rubber seals, so I can't
tell by looking, but most of the codes are 6xxx).

Thanks,
Rab

> >
> Roughly what size?
> I have some biggish Bridgeport sized screws complete with mountings
> and coil bellows from various machine we have scrapped over the

last

> couple of years.
> A very cheap source of medium sized bearings are obtainable from

some

> of the motor factors. Most cars now have either matched sets of AC
> bearings or even double AC bearings.
> Failing that any of the bigger bearing supply houses like Bearing
> Services should be able to fix you up. You are looking at the 7xxx
> series for AC bearings.
>
> John S.