Re: Ballscrew balls ?

Rick,

Glad to see your post. I've been recommending similar for years now.
The body of the cheap nuts is okay; but as you say the balls are not
so good in many cases. These low-grade ballscrews and nuts ARE made
for LOAD, not precision; as you suggested. One of the results of us
using parts from the larger motion control industry for our CNC
niche items.

Ballendo

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "rickchownyk2000"
<rchownyk@...> wrote:

>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, figNoggle <david@> wrote:
> >
> >
>
> In the 5/8 series of ball screw and nuts that I have bought, they
> have always had undersized and sometimes not round balls! I can

only

> imagine the oem application is for the thrust and not accuracy. I
> always buy extra balls (boy, doesn't that just sound bad!)to

reload

> the nut. On my little cnc I have about .001 backlash. Pretty good
> for a 23.00 nut I think! Pics are at www.cnczone.com Photo

section,

> RickOmatic folder. I will also be at the cnc-workshop 'tellin'

lies'

> and having lots of fun! www.cnc-workshop.com Rick
> >
> > hi harko-
> >
> > i measured the balls in the thomson/danaher non-preloaded nut

(just

> happen
> > to be reballing them) and they're all 0.1245". i ordered a bag

of

> both
> > 1/8" (which are indeed 0.1250" and do flow through the race) and
> 3.5mm.
> >
> > the 3.5mm's don't fit through the race (found out the hard way

but

> had to
> > try it).
> >
> > interesting, what kind of ballnuts have different sized balls

and

> why?
> >
> >
> >
> >
> > CNC Plans <http://www.fignoggle.com/plans/cncplans.htm> (DRO too)
> > HF 8x12 Lathe, Mini-Mill, How-To's and More
> <http://www.fignoggle.com>
> > NEW! Sieg X3 and Super X3 Mill Information

<http://www.superx3.com>

> >
> >
> > On Thu, 6 Apr 2006, Harko Schwartz wrote:
> >
> > > First of all ball screw balls are not of the same size in the
> ballnut. If
> > > they were it wouldn't work. The balls are not the only

problem

> the nut and
> > > screw are also worn. If the hardness hasn't been removed from
> the screw
> > > then it is a matter of resizing the balls. I think that every
> other ball is
> > > slightly undersized.
> > >
> > > Harko
> > >
> > >
> > > On 4/6/06, turbulatordude <dave_mucha@> wrote:
> > > >
> > > > Hi all,
> > > >
> > > > Are ball screw balls sold individually ?
> > > >
> > > > I want to replace the balls in one I have and am wondering

what

> to get.
> > > >
> > > > Any suggestions ?
> > > >
> > > > Dave
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
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> > > http://www.metalworking.com/news_servers.html
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> > > http://groups.yahoo.com/group/jobshophomeshop I consider

this

> to be 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
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