Re: [CAD_CAM_EDM_DRO] Bearing Material

Hi Terry,

Of those materials I would go with one of the Nylons - probably 66 - they
are usually much easier to machine than the others. A material I
particularly like goes by the name of PolyPenco (a guess at the spelling!).
I've no idea where you would buy it as the stuff I have used has always come
via a scrap yard! I think it is probably a nylon-type material but it
machines beautifully to a high polish straight from the tool.

Ian
--
Ian W. Wright
Sheffield UK

----- Original Message -----
From: "James Owens" <wotisname@...>
To: <CAD_CAM_EDM_DRO@egroups.com>
Sent: 29 October 2000 01:47
Subject: Re: [CAD_CAM_EDM_DRO] Bearing Material


> Hi Tim,
>
> I didn't really explain what I was doing now that I have read the post I
put
> up. The material would be machined into a roller, with a ball-race inside,
> running against an aluminium square section rail. The roller would have a
> lip top and bottom to prevent up and down movement. The range of materials
> available easily here is, Nylon 66, Nylon 6, Acetal, PTFE, Acrylic and
> Tufnol. I'm sure there are many more but not available to me in small
> quantities. Have never used plastics before I don't know of their
machining
> qualities. If I was to obtain material from the States it would be
> expensive.
>
> Terry
>
>
> > Not quite as hard as bakelite, but consider looking at the PTFE filled
> > Acetal (Teflon filled Delrin) referenced earlier. I have used it for
small
> > sleeve bearings and it works great. Very easy to machine and seems to
hold
> > up well. I got mine from McMaster Carr. Looking through the McMaster
> catalog
> > I also see a material called Self-Lubricating Garolite. It is listed as
a
> > woven glass fabric laminate with an epoxy resin and then the choice of
> > graphite impregnated or molly-filled and coated.
> >
> > Tim
> > [Denver, CO]
>
>
>
>
> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
discussion of shop built systems, for CAD, CAM, EDM, and DRO.
>
> Addresses:
> Post message: CAD_CAM_EDM_DRO@egroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@egroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@egroups.com
> List owner: CAD_CAM_EDM_DRO-owner@egroups.com, wanliker@...
> Moderator: jmelson@... [Moderator]
> URL to this page: http://www.egroups.com/group/CAD_CAM_EDM_DRO
> FAQ: http://www.ktmarketing.com/faq.html
> bill,
> List Manager
>
>