Re: [CAD_CAM_EDM_DRO] helical couplings

Thank you, Tony.
Will have to find out prices for this product yet.
Alex

----- Original Message -----
From: Tony Jeffree <tony@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, June 13, 2003 4:29 AM
Subject: Re: [CAD_CAM_EDM_DRO] helical couplings


> At 23:25 12/06/2003 -0500, you wrote:
> > >Folks,
> > >what is a reasonably priced source for helical couplings?
> > >I'm looking for one with 1/2"ID on one end and 5 mm ID on another end.
> > >
> > >
> >For odd size conversions, you need to buy the closest stock coupling and
> >bore it out to the needed size. You might have to start out with a
> >1/8 - 1/4" unit or something like that. You might also need to make
> >a bushing to adapt a 1/2" - 1/2" unit, because of the great size
difference.
> >These are pretty expensive no matter where you get them.
>
> Might be worth trying an Oldham coupling. These come in 3 parts - two
> bosses & a torque disc that sits between - & the bosses are available in a
> number of bore sizes. See:
>
> http://www.huco.com/
>
> The diagram directly below "Welcome to Huco" illustrates an Oldham
> coupling. These are also generally cheaper than helical couplings - Huco's
> 25mm diam Oldham couplings work out at around the £10 mark ($16).
>
>
> Regards,
> Tony
>
>
>
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