Re: [CAD_CAM_EDM_DRO] looking for some gearheads

At 05:21 PM 7/30/2007, you wrote:

>I'd sure like to find a worm drive w/ 10 arc seconds of backlash.. I
>have a use for one, granted they are cheaper than the planetary
>reducers and harmonic drives I was going to buy. :-)

The better rotary tables are just that.

Most of the Enco ( www.use-enco.com ) tables (page 313-314) are
accurate to 45 seconds of arc. That is ALL errors. I bet the slop
is way less than that. But the co$t is not low!

Since the tables are 45 seconds total, I bet the gear drives are
available, for a big fee.

David G. LeVine
Nashua, NH 03060