Sean Breheny wrote:
> Hi all,
>
> We have a robotics application which puts fairly high reversing loads
> on caster wheels. We are looking for a source for heavy-duty casters
> which are either conductive or dissipative (we can deal with roughly
> anything from 0 ohms to 10^9 ohms from hub to floor) to counter some
> ESD generation problems that we have. So far, all we have been able to
> find are either very soft conductive casters which do not hold up very
> long under load, or semi-dissipative ones whose resistance is almost
> 10^11 ohms from hub to floor, which is too high for our application.
> Unfortunately, we seem to have found that most caster vendors, even
> those who make ESD casters, are not too knowledgeable about ESD and
> either don't understand why this is a problem for us or do not know
> how to fix it. Has anyone here ever dealt with this or know of a
> source for ESD casters?
>
> Thanks,
>
> Sean
>   
If your happy with the castors mechanically have you considered getting 
them retreaded with a carbon loaded PU material?

We make polyurithane wheels for robotic combat type things so it 
shouldn't be too much of a stretch to dose it with carbon or some such 
for you.

Drop me a line if your interested.

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