RE: [CAD_CAM_EDM_DRO] Bearing Material

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]

> Hi List,
>
> I am in the throws of designing and building a CNC router/PCB
> driller and an
> not sure as to what material to use as a bearing/guide material.
> The loading
> is quite small but it should locate along a square section aluminium guide
> rail. I am looking for a material that can be machined, is
> available from a
> local engineering material suppliers and is also hard and shiny like
> Bakelite and will not wear when used against Aluminium. I thought of using
> Nylon but I think this would be a little soft.
>
> Terry
>