Re: [CAD_CAM_EDM_DRO] Speaking of VFDs

Hi, if you want high speed for small tooling why not use one of the speed
spindles that chucks up like a collet and provides high rpm. some are air
powered some are universal motor. I see them quite often on Ebay for
reasonable $. running a bridgeport at 4000 rpm with a high load cutter is
the best way to kill a nice head. cul brian f.

----- Original Message -----
From: "Sven Peter" <peteryco@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, October 03, 2001 8:44 AM
Subject: Re: [CAD_CAM_EDM_DRO] Speaking of VFDs


> I agree
> Sven Peter
>
> Jon Elson wrote:
> >
>
> > The Bridgeport 2J head with the dual-speed motor allows you to get 4250
> > RPM maximum. I have heard from a few people that if you run the
> > machine at that speed a lot (making mold cavities with small carbide
> > tools, for example) the main spindle bearings won't last very long,
maybe
> > about a year, if you are lucky! That soundls like an expensive
proposition
> > for a home shop!
> >
> > Jon
> >
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
> Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> bill,
> List Manager
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>