Re: Ballscrew balls ?

--- 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?

>
>
>
>
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>
> 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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it if you have trouble.

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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

POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO
EXCEPTIONS........

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