RE: [CAD_CAM_EDM_DRO] Re: small spindle ?

The type of motor used in the spindle that was linked to is the type that is
used in things like battery powered drills. They are designed to power a
gear train, they are not made to have a cut down ER11 collet chuck mounted
to them (i.e. the bearings/bushing will not hold up.)



One very economical way to have a good spindle for a home built machine is
to use a small trim router motor with precision collets made by PreciseBits.
I dare not provide a link else I'll get in trouble with the moderator again.



Contact me off list at birt_j@... for more information. I don't
like not being able to share openly but when I do I get bawled out.



Jeff Birt

Soigeneirs.com



From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of LJG
Sent: Thursday, June 07, 2012 4:16 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: small spindle ?





Jeff,

Where would I go about getting a motor-spindle with less runout than
.0015". Most lathe chucks under $1000.00 don't quarantee runout less than
about .002".

When you say "those types of motors" what did you mean?

I'm a newby and building a machine and want to use quality components.

ljg

--- In CAD_CAM_EDM_DRO@yahoogroups.com
<mailto:CAD_CAM_EDM_DRO%40yahoogroups.com> , "Jeffrey T. Birt" <birt_j@...>
wrote:

>
> Honestly, 0.0025" or an inch is a HUGE amount of run out. Even the

'premium'

> spindle is only quoted as 0.0015" which is also a HUGE amount of run out.
> Those types of motors are likely not designed to take and side load

imposed

> by cutting so the bearings will likely not last very long.
>
>
>
> Just my 2 cents
>
>
>
> Jeff Birt
>
>
>
> From: CAD_CAM_EDM_DRO@yahoogroups.com

<mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>

> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com

<mailto:CAD_CAM_EDM_DRO%40yahoogroups.com> ] On Behalf Of Bob

> Sent: Monday, May 14, 2012 1:04 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com

<mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>

> Subject: [CAD_CAM_EDM_DRO] Re: small spindle ?
>
>
>
>
>
>
>
> Take a look at this.
> http://www.zentoolworks.com/product_info.php?cPath=16
> <http://www.zentoolworks.com/product_info.php?cPath=16

<http://www.zentoolworks.com/product_info.php?cPath=16&products_id=122>
&products_id=122>

> &products_id=122
> cheers
> Bob
> http://www.cad2gcode.com/cncprojects/
> --- In CAD_CAM_EDM_DRO@yahoogroups.com

<mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>

> <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com> , "turbulatordude"
> <dave_mucha@> wrote:
> >
> > Hi all,
> >
> > looking to fabricate a very small bench top machine. looking for a small
> spindle, something low cost.
> >
> > I would like a spindle like a Dremel Flex shaft, alas, a friend burnt
> through half a dozen over a year. was he just unlucky ? is there a problem
> cooling or should he have oiled the bearings ?
> >
> > This will be for a very light duty machine. weight is an issue, I do not
> want to use anything as big and bulky as a dremel. and I would prefer to

not

> make one.
> >
> > that is what I would like... now the reality has to come in. any
> suggestions ?
> >
> > the machine is going to be made of 1/2 inch plastics. I got am getting a
> lot of scrap that I can put to use.
> >
> >
> >
> > Dave
> >
>
>
>
>
>
> [Non-text portions of this message have been removed]
>

[Non-text portions of this message have been removed]