Re: Alternative shafts for linear bearings

Nope.

Drill rod as you mentioned has a tolerance of +/- 0.001" or worse.

It is not straight

Precision ground is dead on size and hardened.

But, look on the bright side, you got the high dollar items !

Dave





--- In CAD_CAM_EDM_DRO@yahoogroups.com, "robertokx" <robert.okx@s...>
wrote:

> Whilst scrouging around a scrap yard I found a dozen or so new

nippon

> bearing company linear motion bearings(16mm ID & 13mm ID).Up until
> now the idea was to go with rollerskate bearings on angle iron for
> all 3 axis.
> My Question: Are there alternatives to using expensive ground

shafts

> with these types of bearings?
>
> I read somewhere (perhaps in this Group) that the hardened steel

rod

> used for making drill bits etc could be an alternative.
>
> Thanks
> Robert