Re: Acme screws and pre-load nuts was:Re:Re:greetings

Dan,

Its:

http://www.kerkmotion.com

Ballendo (praying that THIS url works for everybody :-) )



Dan Dowell <dandowell@s...>
Date: Tue Sep 19, 2000 10:18pm
Subject: Re: Acme screws and pre-load nuts was:Re:Re:greetings


Does any one have a url for KERK.







ballendo@y... wrote:
Alvaro Fogassa wrote:
The preload nuts made by BSA does't wear very fast becouse it's
made of delrin(acetal) and it conforms to the lead error,The only one
that could fit the grizzly would be the 3/8" with a maximum load of
25lbs for backlash free.As you increase the load the nut backdrives
and backlash is there.
It would be very easy to excede the 25lbs load on the grizzly because
of friction.
Hello all,

I want to mention that the BS&A cam nut is A market RESPONSE to the
nuts invented by KERK. The kerk patent uses a torsionally loaded
differential screw to self adjust for wear. (similar to the
Bridgeport screw Jon Elson described in an earlier post, but SELF-
adjusting)And patented it. So BS&A came up with the cam.

IMO, the Kerk product is much better. I had to use the BS&A nuts when
the popularity of the kerk nuts outstripped the supply(when they were
first introduced). The BS&A nuts work fine as long as they are used
in the range they are designed for.

Hope this helps.


Ballendo