Re: linear bearing based on ground flat stock

Graham,

Here's a super simple, effective solution:

Use a square bar, not rectangular.

I'm not sure if you have a lathe; but you could use your mill as
a "lathe" for parts like these.

Make 3 vee wheels which have two bearings each. Use one of the
following:
1.bore from each side to create a bearing seat.
2.use grooves and circlips to provide a seat for the bearings.
3.glue a spacer in the bore.
4.Use flanged bearings in a straight bore.

1 bar, 3 wheels. 6 skate bearings. 3- 8mm BHCS or SHCS as axles,
with washers and some loctite to adjust the two bearing per wheel
for preload. 1 roller plate, with one slotted hole to preload the
single wheel against the other two. Done.

Repeat three times.

Cheap, fast and capable.

Hope this helps,

Ballendo

P.S. Of course if you need pics, I don't have them<G>

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Graham Stabler" <eexgs@...>
wrote:

>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, wanliker@ wrote:
> >
> >
> > In a message dated 5/22/2006 12:21:50 A.M. Mountain Daylight

Time,

> > JanRwl@ writes:
> >
> > The "V-groove" system they use is much better
> > than a flat roller on a flat surface, as the latter will "bump
> over" debris
> > and
> > won't run smooth for long, before needing cleaning, while the
> V-groove
> > stuff
> > is pretty-much self-cleaning as it rolls.
> >
> >
> >
> > If you are short of cash, make a close fitting sleeve with a V

grove

> on the
> > outside, and LocTite it to the bearing, or bushing. Be careful

to

> not get
> > any LocTite into the bearing.
> > bill
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
> I would still need something for my cheap v-rollers to run on. Its
> not that I don't have the cash it is just that I don't want to

spend

> it on this project, this will be a fun and super fast machine to

show

> what's possible. It will mill foam and wax but not much else.
>
> I have some ideas for a ceiling mounted huge one as well but I

have no

> where to build it so its a mute point really but it involves

bicycle

> hubs, lots of skate bearings and some carbon fibre tube :O
>
> Graham
>