Re: [CAD_CAM_EDM_DRO] Timing Pulleys

ditto here, the mfgrs. seem to understand that they can't supply every bore
size you may need, so they run with smaller bores expecting you to resise
them. Easy enough with an adjust-a-tru chuck or carefully centered 4-jaw.

R. William Kichman, P.E.
Kichman Engineering Associates
103 Old Furnace Road
Cornwall, PA 17016-0643
tel/fax 717/270-0714

----- Original Message -----
From: "Jon Elson" <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, September 30, 2003 12:44 AM
Subject: Re: [CAD_CAM_EDM_DRO] Timing Pulleys


>
>
> kadeshan wrote:
>
> >Does anyone have a part number for an xl pulley with a 5/8 in bore?
> >Or something slightly smaller. Also what ratio would you recommend,
> >its on a bench knee mill, using 600 oz in servos. They X axis is
> >already done with a flexible coupling. ANy getting any good results
> >cnc the knee on something similar?
> >
> >
>
> >I can tell you I bought all my timing pulleys with the smallest bore,
> >
> and bored them out on the lathe. I was appalled at how poor the centering
> of them was. I saw up to .020" runout on them, and that was from W. M.
> Berg, a pretty high-class manufacturer.
>
> Jon
>
> >
> >
>
>
>
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