Re: Source and specs for Thompson Ball Bushings, Ball Screws, and shafts for rails.

John, thanks for the response. The Nook Industries site has all the
design information I was looking for, and I believe that they may
sell retail. The qbcbearings site has all the hardware, and they do
sell retail. Again thank you for your help.

Whelen

--- In CAD_CAM_EDM_DRO@yahoogroups.com, John Johnson <johnatl@m...>
wrote:

>
> Specs:
> http://www.danaher.com
> http://www.thomsonind.com/default.htm
> http://www.nookindustries.com/
>
> Suppliers:
> http://www.vxb.com
> http://www.mscdirect.com
> http://www.mcmaster.com
>
> http://www.google.com
>
> Regards,
> JJ
>
> On 24-Oct-2005, at 10:41, whelenremington wrote:
>
> > I would like to build a X and Y axis using Thompson ball bushings
> > riding on shafts, axis driven by ball screws, and stepping motor.
> > When I was doing design 40 years ago, I remember that Torrington
> > roller bearings had to be press fit in steel, with a minimum wall
> > thickness in order for the needel bearings to work. Do Thompson

ball

> > bushings have requirements such as steel vs aluminum, tight

tolerance

> > press fit or any fit will do, minimum wall thickness in aluminum

or

> > steel?
> >
> > What is a web source for Thompson ball bushings other than eBay,
> > where they have reasonable prices, sell retail in small lots, and
> > provide specifications.
> >
> > Also do the shafts that are used as the rails, have to be

toleranced

> > to 0.0001 inch, and must they be hardened? What is a source for

the

> > hardened and ground rods? Are there suppliers that will finish

cut

> > them to length?
> >
> > What is a retail, small quantity, source for ball screws and ball
> > nuts, transport grade and hardened and ground grade, with zero

back

> > lash ball nuts? What are the different grades for ball screws?

Is

> > there a discussion somewhere about ball screw grades,

implementation

> > in a design (two vs one, thrust bearings, ...)?
> >
> > Thank you in advance for your help.
> >
> > Whelen
> >
> >
> >
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
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