For David Monroe

David,

Your latest email came to me with an attachment - something like
'Klas.(something).doc.slo' . I suspect it could have been a virus - perhaps
you would want to check your machine??

Best wishes,
Ian
--

Ian W. Wright
Sheffield, UK


The following added for automatic email harvesters!
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----- Original Message -----
From: "Les Watts" <leswatts@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, October 03, 2002 7:47 PM
Subject: Re: [CAD_CAM_EDM_DRO] mounting ballscrews onthe ol mini mill help


> Good point!
>
> I used an equivalent radial load factor of 1 in those calculations
> last night for the R4A so thrust capacity = radial capacity for
> that case. This was from an old MRC engineering and design guide.
> The ERL charts give thrust values 60 to 100% of radial depending
> ball diameter and number of balls for conrad bearings so you are quite
> right.
>
> I guess two things are working there. Having all the balls take a thrust
> load as you mention helps a bunch. Having the low contact angle act
> as a wedge squeezing the balls works the other way. The net effect
> is thrust and radial are about the same.
>
> They take light loads simply because they are light bearings-
> radial or thrust. I will say the R4A does have impressive capability
> for such a tiny bearing though. It was better than what I would
> have guessed.
>
> Les
>
> Leslie Watts
> L M Watts Furniture
> Tiger, Georgia USA
> http://www.alltel.net/~leswatts/wattsfurniturewp.html
> engineering page:
> http://www.alltel.net/~leswatts/shop.html
>
> ----- Original Message -----
> From: <bjammin@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Thursday, October 03, 2002 7:29 AM
> Subject: Re: [CAD_CAM_EDM_DRO] mounting ballscrews onthe ol mini mill help
>
>
> > At 08:49 AM 10/2/02 -0400, you wrote:
> > >Ordinary deep groove ball bearings are rated for light thrust loads-
> >
> > Most of these have thrust loads almost as high as the radial load. No
> > fooling! Check any maker's cat on that. You might like to consider that
in
> > thrust, all the rolling elements bear load; in radial load, only about
1/3
> > of them do.
> >
> >
> > Regards, Hoyt McKagen
> >
> >
> > Belfab CNC - http://www.freeyellow.com/members/belfab/belfab.html
> > US Best MC - http://www.freeyellow.com/members/batwings/best.html
> > Camping/Caving - http://www.freeyellow.com/members/batwings/caving.html
> > 93% of people killed in workplace accidents are men
> >
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if
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OT
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> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this as a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
>
> Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
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> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> bill,
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
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>