Re: [CAD_CAM_EDM_DRO] Re: Nema 23 Brakes for servo or stepper motors

Hmm. And it seems that active control on the z-axis wouldn't be too costly
in current either.

On 10/25/06, Dennis Schmitz <denschmitz@...> wrote:
>
> I was going to ask why the brakes are necessary since most applications
> can stop a motor dead by simply driving the windings to ground. As long as
> there's enough friction in the movement, anyway.
> On 10/25/06, vrsculptor <vrsculptor@...> wrote:
> >
> > Just curious... How many TPI is your ballscrew.
> >
> > Roger
> >
> > > I'm looking for a new or used Nema23 servo/stepper motor brake 24VDC
> > > bolt on type. I have ball screws on all three axes on my router and I
> > > need a Brake for my Z-axis. Inertia Dynamics, Electromate and MCG
> > > sell them for up wards of $210.00, this seems a bit high for something
> > > so simple. Do any of you have one you can spare or an alternative
> > > source for these brakes? It has to be similar to the ones from the
> > > companies I mentioned because I need to mount it between the end of
> > > the ball screw and the bottom of my motor so I can mount the encoder
> > > on the top of my motor. Any leads or help would be greatly
> > > appreciated.
> > >
> >
> >
> >
> >
> >
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