Re: : linear bearing based on ground flat stock

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

>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Fred Smith" <imserv@>

wrote:

>
> > V-track rail systems use opposing rollers. There is a preload
> > between the opposing rollers to prevent the roller from riding

up on

> > the sides of the rail angles. With a preload, there is little

or no

> > twisting of the trolley and it becomes very stable ( 4 total

rollers

> > and two parallel tracks). Connect two trolleys with a beam to
> > create a gantry, or use one alone for a hexapod strut.
> >
> > Fred Smith
>
>
> He was suggesting two rollers are enough.
>

Two won't work, but 3 will.

Fred Smith - IMService